Commit Graph

3844 Commits

Author SHA1 Message Date
Artem Bityutskiy 93e562141a mtd: mtdcore: remove few useless #ifdef's
Remove a couple of useles '#ifdef CONFIG_PROC_FS's around procfs functions
which anyway turn into empty function in 'proc_fs.h' file when CONFIG_PROC_FS
is not defined.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:15:31 +01:00
Artem Bityutskiy c188a14167 mtd: remove the h1910 NAND driver
This driver is marked as broken for 2 years, and no one cares to make it
compile and work. Now it is time to zap it.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:15:17 +01:00
Artem Bityutskiy 3e6f9aff77 mtd: remove the ppchameleonevb NAND driver
This driver has been marked as broken for long time and it depends on a
non-existing PPCHAMELEONEVB Kconfig symbol.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:15:12 +01:00
Jingoo Han 97135118bd mtd: davinci_nand: use module_platform_driver_probe()
This patch uses module_platform_driver_probe() macro which makes
the code smaller and simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:14:42 +01:00
Jingoo Han 3a2a13fa90 mtd: txx9ndfmc: use module_platform_driver_probe()
This patch uses module_platform_driver_probe() macro which makes
the code smaller and simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:14:40 +01:00
Jingoo Han 14ec6dae5b mtd: sh_flctl: use module_platform_driver_probe()
This patch uses module_platform_driver_probe() macro which makes
the code smaller and simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:14:37 +01:00
Jingoo Han 307d2a5156 mtd: fsmc_nand: use module_platform_driver_probe()
This patch uses module_platform_driver_probe() macro which makes
the code smaller and simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:14:34 +01:00
Jingoo Han c5345edf7b mtd: atmel_nand: use module_platform_driver_probe()
This patch uses module_platform_driver_probe() macro which makes
the code smaller and simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:14:31 +01:00
Jingoo Han d9ba31092c mtd: orion_nand: use module_platform_driver_probe()
This patch uses module_platform_driver_probe() macro which makes
the code smaller and simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:14:29 +01:00
Jingoo Han 725a2277f8 mtd: doc: use module_platform_driver_probe()
This patch uses module_platform_driver_probe() macro which makes
the code smaller and simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:14:24 +01:00
Rafał Miłecki a6fb35d379 mtd: bcm47xxsflash: define opcodes
We need them to add erase/write support. This may duplicate some defines
with bcma and/or ssb code, but it makes more sense to keep that in
bcm47xxsflash which is supposed to work with both buses.
Duplicated defines will be removed from ssb/bcma.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:14:17 +01:00
Rafał Miłecki 1f816bc729 mtd: bcm47xxsflash: store info about flash type
It's going to be needed for erase and write operations, they differ
between Atmel and ST flashes.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:14:14 +01:00
Rafał Miłecki 41c81536ea mtd: bcm47xxsflash: keep a reference to the BCMA
To implement erase and write support we need to "talk" with ChipCommon
BCMA core which serial flash it attached to.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:14:05 +01:00
Artem Bityutskiy ccef4dcc5a mtd: mtdcore: use const qualifier
Be a bit stricter and add few more 'const' qualifiers.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:04:27 +01:00
Artem Bityutskiy afffeec9e0 mtd: devices: add const qualifiers
Be a bit stricter and add few more 'const' qualifiers.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:04:22 +01:00
Artem Bityutskiy 0984c89104 mtd: maps: add const qualifiers
Be a bit stricter and add few more 'const' qualifiers.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:04:20 +01:00
Artem Bityutskiy cce2a026b5 mtd: physmap_of: add const qualifiers
Be a bit stricter and add few more 'const' qualifiers.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:04:13 +01:00
Artem Bityutskiy f39cf6c7d4 mtd: physmap: add const qualifiers
Be a bit stricter and add few more 'const' qualifiers.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:02:40 +01:00
Artem Bityutskiy d50dcb1d0e mtd: plat-ram: add const quilifiers
Be a bit stricter and add few more 'const' qualifiers.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:02:33 +01:00
Artem Bityutskiy 26a4734623 mtd: add 'const' qualifier to a couple of register functions
'mtd_device_parse_register()' and 'parse_mtd_partitions()' functions accept a
an array of character pointers. These functions modify neither the pointers nor
the characters they point to. The characters are actually names of the MTD
parsers.

At the moment, the argument type is 'const char **', which means that only the
names of the parsers are constant. Let's turn the argument type into 'const
char * const *', which means that both names and the pointers which point to
them are constant.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:02:16 +01:00
Artem Bityutskiy b08a25ade2 mtd: remove the ixp2000 map driver
This driver depends on CONFIG_IXP2000 which is not defined anywhere, which
means this driver is dead.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:01:55 +01:00
Artem Bityutskiy bece641c96 mtd: remove the dilnetpc map driver support
This driver is marked as broken for very long time. Most probably this board is
just something ancient no one cares about anyway.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:01:43 +01:00
Artem Bityutskiy a312c87ab0 mtd: remove the tqm8xxl map driver
This driver depends on the CONFIG_TQM8xxL symbol, which is not defined
anywhere, which means that this driver is dead.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 13:01:34 +01:00
Artem Bityutskiy 83bfc0d1a7 mtd: maps: kill the rpxlite map driver
This driver depends on the CONFIG_RPXCLASSIC and CONFIG_RPXLITE symbols, which
are not defined anywhere, and this means that this driver is dead.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: linux-pcmcia@lists.infradead.org
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-m68k@lists.linux-m68k.org
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:59:42 +01:00
Artem Bityutskiy 2c31904136 mtd: remove the mbx860 map driver
This driver depends on CONFIG_MBX which is not defined anywhere, which means
this driver is dead.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: linux-pcmcia@lists.infradead.org
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-m68k@lists.linux-m68k.org
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:57:37 +01:00
Artem Bityutskiy f708364b67 mtd: remove the dmv182 map driver
This driver depends on the CONFIG_DMV182 symbol which is not defined anywhere,
and this means that this driver is dead.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:57:32 +01:00
Artem Bityutskiy e6828b1b7a mtd: remove the dbox2-flash map driver
This driver depends on the CONFIG_DBOX2 symbol which does not exist in
the kernel, which means the driver is dead.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:57:24 +01:00
Daniel Mack ad2457894c mtd: devices: elm: check for device's presence before configuration
In case the driver is not probed - due to config mismatches or errors
in the DTS files - dev_get_drvdata() returns NULL, leading to an Ooops
during boot.

Make elm_config() return an error in such cases to propagate the error
up to the user, so it can fall back to software mode.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:57:18 +01:00
Alexander Shiyan 0cca9fbf5d mtd: nand_base: Removed unnecessary cleaning "onfi_version" variable
Variable "onfi_version" is already set to zero before nand_flash_detect_onfi()
call, so additional cleaning is not necessary.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:56:53 +01:00
Alexander Shiyan fb066adadd mtd: nand_base: Removed unnecessary command masking
NAND command, passed to cmd_ctrl(), is masked with 0xff. This patch
removes this since masking is not necessary and masking is not performed
in other places for same call.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:56:44 +01:00
Rafał Miłecki 001c33ab4c mtd: m25p80: add entry for w25q128
This device was reported over a year ago on OpenWrt mailing list in the
thread [OpenWrt-Devel] RedBoot partition table with winbond m25q128vb
(unfortunately, I can't find message id). Macpaul seemed to have
problems with partition driver, but it seems the device was working OK.

Reported-by: Macpaul Lin <macpaul@gmail.com>
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:55:36 +01:00
Syam Sidhardhan 8be84e035c mtd: maps: Remove redundant NULL check before kfree
kfree on NULL pointer is a no-op.

Signed-off-by: Syam Sidhardhan <s.syam@samsung.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:54:27 +01:00
Krzysztof Mazur 8913405593 mtd: m25p80: add support for SST25VF064C
Signed-off-by: Krzysztof Mazur <krzysiek@podlesie.net>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:54:12 +01:00
Krzysztof Mazur e534ee4f9c mtd: m25p80: introduce SST_WRITE flag for SST byte programming
Not all SST devices implement the SST byte programming command.
Some devices (like SST25VF064C) implement only standard m25p80 page
write command.

Now SPI flash devices that need sst_write() are explicitly marked
with new SST_WRITE flag and the decision to use sst_write() is based
on this flag instead of manufacturer id.

Signed-off-by: Krzysztof Mazur <krzysiek@podlesie.net>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:24:39 +01:00
Joe Schaack 05ff8c258c mtd: ofpart: support partitions of 4 GiB and larger
Previously, partitions were limited to less than 4 GiB in size because
the address and size were read as 32-bit values. Add support for 64-bit
values to support devices of 4 GiB and larger.

Signed-off-by: Joe Schaack <jschaack@xes-inc.com>
Signed-off-by: Nate Case <ncase@xes-inc.com>
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:05:53 +01:00
Brian Norris e66e280c36 mtd: m25p80: n25q064 is Micron, not Intel/Numonyx
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:04:45 +01:00
Artem Bityutskiy b5a6c3095f mtd: doc: remove support for DoC 2000/2001/2001+
These drivers are deprecated for very long time, and we have a different driver
for these called "diskonchip". Thus, kill the ancient cruft.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:04:31 +01:00
Artem Bityutskiy 8dbfae1ef0 mtd: nand_ids: introduce helper macros
Introduce helper macros for defining NAND chips. These macros do not really add
much value in the current code-base. However, we are going to add full ID
support which adds some more complexity to the table, and helper macros become
useful for readability.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:03:47 +01:00
Artem Bityutskiy 51148f1fb0 mtd: nand: remove few tiny page NAND bits
NAND flashes with 256 bytes NAND pages are so old that probably do not exist
any more. Let's remove few related pieces of code and forget about them
forever. The assumption will be that 512 bytes NAND page size is the minimum
possible.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:03:16 +01:00
Artem Bityutskiy 68aa352de2 mtd: nand: rename the id field of 'struct nand_flash_dev'
The 'id' is a bit confusing name because NAND IDs are multi-byte. Re-name
it to 'dev_id' to make it clear that this is the "device ID" part (the second
byte).

While on it, clean-up the commentary for 'struct nand_flash_dev'.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:02:41 +01:00
Artem Bityutskiy 3239a6cdef mtd: nand: use NAND_HAS_CACHEPROG
We have this unused macro, let's use it and justify its existence.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:02:19 +01:00
Artem Bityutskiy 0be718e552 mtd: nand: remove a bunch of unused commands
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:01:33 +01:00
Artem Bityutskiy 14c6578683 mtd: nand: remove AG-AND support
We have only one AG-AND driver and it was not touched since 2005. It looks
like AG-AND was not really make it to mass-production and can be considered
a dead technology.

Along with the AG-AND support, this patch removes the BBT_AUTO_REFRESH feature,
because the only user of this feature is AG-AND. And even though it is
implemented as a generic feature, I prefer to remove it because NAND flashes do
not really need it in this form.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:00:50 +01:00
Artem Bityutskiy 02f57fe448 mtd: nand: remove the rtc_from4 driver support
The AG-AND support is about to be removed from MTD, because this technology is
dead for long time. Thus, remove this the only AG-AND driver we have in the
kernel tree.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 12:00:30 +01:00
Artem Bityutskiy f7025a43a9 mtd: decommission the NAND museum
The MTD subsystem has its own small museum of ancient NANDs in a form of the
CONFIG_MTD_NAND_MUSEUM_IDS configuration option. The museum contains stone age
NANDs with 256 bytes pages, as well as iron age NANDs with 512 bytes per page
and up to 8MiB page size.

It is with great sorrow that I inform you that the museum is being
decommissioned. The MTD subsystem is out of budget for Kconfig options and
already has too many of them, and there is a general kernel trend to simplify
the configuration menu.

We remove the stone age exhibits along with closing the museum, but some of the
iron age ones are transferred to the regular NAND depot. Namely, only those
which have unique device IDs are transferred, and the ones which have
conflicting device IDs are removed.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 11:59:09 +01:00
Artem Bityutskiy 7d321ec171 mtd: nand_ids: minor clean-ups
Clean-up the code a little bit:
  * clean-up commentaries.
  * move macro definitions to the top of the file.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 11:58:52 +01:00
Uwe Kleine-König 5dc63fa2c2 mtd: mtdchar: handle chips that have user otp but no factory otp
Before this patch mtd_read_fact_prot_reg was used to check availability
for both MTD_OTP_FACTORY and MTD_OTP_USER access. This made accessing
user otp for chips that don't have a factory otp area impossible. So use
the right wrapper depending on the intended area to be accessed.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 11:58:34 +01:00
Daniel Schwierzeck 6b75152bbf mtd: m25p80: add support for EON EN25QH256
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 11:58:02 +01:00
Daniel Schwierzeck f995275486 mtd: m25p80: add support for Macronix MX66L51235L
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05 11:57:44 +01:00
Shawn Guo 5fac0e18bd mtd: gpmi: move to use generic DMA helper
With the generic DMA device tree helper supported by mxs-dma driver,
client devices only need to call dma_request_slave_channel() for
requesting a DMA channel from dmaengine.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
2013-04-04 21:22:45 +08:00
Linus Torvalds 35f8c769aa MTD fixes for 3.9
This fixes a couple of problems. Firstly, some people are actually still
 using old small-page flash and we broke it by removing the ready check.
 
 Secondly. fix the handling of partitions on Broadcom 47xx devices.
 Recent changes had made it misdetect the location of the NVRAM and
 scribble over the bootloader when it tried to update the variables there.
 With predictably sad results.
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Merge tag 'for-linus-20130318' of git://git.infradead.org/linux-mtd

Pull MTD fixes from David Woodhouse:
 "This fixes a couple of problems.  Firstly, some people are actually
  still using old small-page flash and we broke it by removing the ready
  check.

  Secondly.  fix the handling of partitions on Broadcom 47xx devices.
  Recent changes had made it misdetect the location of the NVRAM and
  scribble over the bootloader when it tried to update the variables
  there.  With predictably sad results."

* tag 'for-linus-20130318' of git://git.infradead.org/linux-mtd:
  mtd: nand: reintroduce NAND_NO_READRDY as NAND_NEED_READRDY
  mtd: bcm47xxpart: look for NVRAM at the end of device
  Revert "mtd: bcm47xxpart: improve probing of nvram partition"
2013-03-18 08:27:41 -07:00
Rusty Russell b92021b09d CONFIG_SYMBOL_PREFIX: cleanup.
We have CONFIG_SYMBOL_PREFIX, which three archs define to the string
"_".  But Al Viro broke this in "consolidate cond_syscall and
SYSCALL_ALIAS declarations" (in linux-next), and he's not the first to
do so.

Using CONFIG_SYMBOL_PREFIX is awkward, since we usually just want to
prefix it so something.  So various places define helpers which are
defined to nothing if CONFIG_SYMBOL_PREFIX isn't set:

1) include/asm-generic/unistd.h defines __SYMBOL_PREFIX.
2) include/asm-generic/vmlinux.lds.h defines VMLINUX_SYMBOL(sym)
3) include/linux/export.h defines MODULE_SYMBOL_PREFIX.
4) include/linux/kernel.h defines SYMBOL_PREFIX (which differs from #7)
5) kernel/modsign_certificate.S defines ASM_SYMBOL(sym)
6) scripts/modpost.c defines MODULE_SYMBOL_PREFIX
7) scripts/Makefile.lib defines SYMBOL_PREFIX on the commandline if
   CONFIG_SYMBOL_PREFIX is set, so that we have a non-string version
   for pasting.

(arch/h8300/include/asm/linkage.h defines SYMBOL_NAME(), too).

Let's solve this properly:
1) No more generic prefix, just CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX.
2) Make linux/export.h usable from asm.
3) Define VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR().
4) Make everyone use them.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Tested-by: James Hogan <james.hogan@imgtec.com> (metag)
2013-03-15 15:09:43 +10:30
Brian Norris 5bc7c33ca9 mtd: nand: reintroduce NAND_NO_READRDY as NAND_NEED_READRDY
This partially reverts commit 1696e6bc2a
("mtd: nand: kill NAND_NO_READRDY").

In that patch I overlooked a few things.

The original documentation for NAND_NO_READRDY included "True for all
large page devices, as they do not support autoincrement." I was
conflating "not support autoincrement" with the NAND_NO_AUTOINCR option,
which was in fact doing nothing. So, when I dropped NAND_NO_AUTOINCR, I
concluded that I then could harmlessly drop NAND_NO_READRDY. But of
course the fact the NAND_NO_AUTOINCR was doing nothing didn't mean
NAND_NO_READRDY was doing nothing...

So, NAND_NO_READRDY is re-introduced as NAND_NEED_READRDY and applied
only to those few remaining small-page NAND which needed it in the first
place.

Cc: stable@kernel.org [3.5+]
Reported-by: Alexander Shiyan <shc_work@mail.ru>
Tested-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-03-14 12:48:54 +00:00
Rafał Miłecki 91d542f4dc mtd: bcm47xxpart: look for NVRAM at the end of device
NVRAM is always placed at the end of device and it does not have to
start at the beginning of a block, so check few possible offsets.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-03-08 11:36:00 +00:00
Rafał Miłecki 5ca1088f10 Revert "mtd: bcm47xxpart: improve probing of nvram partition"
This reverts commit be3781b71a.

Some CFE bootloaders have NVRAM at offset 0x1000. With that patch we
were detecting such a bootloaders as a standard NVRAM partition.
Changing anything in this pseudo-NVRAM resulted in corrupted bootloader
and bricked device!

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-03-08 11:35:10 +00:00
Eric W. Biederman 7f78e03513 fs: Limit sys_mount to only request filesystem modules.
Modify the request_module to prefix the file system type with "fs-"
and add aliases to all of the filesystems that can be built as modules
to match.

A common practice is to build all of the kernel code and leave code
that is not commonly needed as modules, with the result that many
users are exposed to any bug anywhere in the kernel.

Looking for filesystems with a fs- prefix limits the pool of possible
modules that can be loaded by mount to just filesystems trivially
making things safer with no real cost.

Using aliases means user space can control the policy of which
filesystem modules are auto-loaded by editing /etc/modprobe.d/*.conf
with blacklist and alias directives.  Allowing simple, safe,
well understood work-arounds to known problematic software.

This also addresses a rare but unfortunate problem where the filesystem
name is not the same as it's module name and module auto-loading
would not work.  While writing this patch I saw a handful of such
cases.  The most significant being autofs that lives in the module
autofs4.

This is relevant to user namespaces because we can reach the request
module in get_fs_type() without having any special permissions, and
people get uncomfortable when a user specified string (in this case
the filesystem type) goes all of the way to request_module.

After having looked at this issue I don't think there is any
particular reason to perform any filtering or permission checks beyond
making it clear in the module request that we want a filesystem
module.  The common pattern in the kernel is to call request_module()
without regards to the users permissions.  In general all a filesystem
module does once loaded is call register_filesystem() and go to sleep.
Which means there is not much attack surface exposed by loading a
filesytem module unless the filesystem is mounted.  In a user
namespace filesystems are not mounted unless .fs_flags = FS_USERNS_MOUNT,
which most filesystems do not set today.

Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Acked-by: Kees Cook <keescook@chromium.org>
Reported-by: Kees Cook <keescook@google.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2013-03-03 19:36:31 -08:00
Linus Torvalds 48476df998 Fairly unexciting MTD merge for 3.9:
* misc clean-ups in the MTD command-line partitioning parser (cmdlinepart)
  * add flash locking support for STmicro chips serial flash chips, as well as
    for CFI command set 2 chips.
  * new driver for the ELM error correction HW module found in various TI chips,
    enable the OMAP NAND driver to use the ELM HW error correction
  * added number of new serial flash IDs
  * various fixes and improvements in the gpmi NAND driver
  * bcm47xx NAND driver improvements
  * make the mtdpart module actually removable
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Merge tag 'for-linus-20130301' of git://git.infradead.org/linux-mtd

Pull MTD update from David Woodhouse:
 "Fairly unexciting MTD merge for 3.9:

   - misc clean-ups in the MTD command-line partitioning parser
     (cmdlinepart)
   - add flash locking support for STmicro chips serial flash chips, as
     well as for CFI command set 2 chips.
   - new driver for the ELM error correction HW module found in various
     TI chips, enable the OMAP NAND driver to use the ELM HW error
     correction
   - added number of new serial flash IDs
   - various fixes and improvements in the gpmi NAND driver
   - bcm47xx NAND driver improvements
   - make the mtdpart module actually removable"

* tag 'for-linus-20130301' of git://git.infradead.org/linux-mtd: (45 commits)
  mtd: map: BUG() in non handled cases
  mtd: bcm47xxnflash: use pr_fmt for module prefix in messages
  mtd: davinci_nand: Use managed resources
  mtd: mtd_torturetest can cause stack overflows
  mtd: physmap_of: Convert device allocation to managed devm_kzalloc()
  mtd: at91: atmel_nand: for PMECC, add code to check the ONFI parameter ECC requirement.
  mtd: atmel_nand: make pmecc-cap, pmecc-sector-size in dts is optional.
  mtd: atmel_nand: avoid to report an error when lookup table offset is 0.
  mtd: bcm47xxsflash: adjust names of bus-specific functions
  mtd: bcm47xxpart: improve probing of nvram partition
  mtd: bcm47xxpart: add support for other erase sizes
  mtd: bcm47xxnflash: register this as normal driver
  mtd: bcm47xxnflash: fix message
  mtd: bcm47xxsflash: register this as normal driver
  mtd: bcm47xxsflash: write number of written bytes
  mtd: gpmi: add sanity check for the ECC
  mtd: gpmi: set the Golois Field bit for mx6q's BCH
  mtd: devices: elm: Removes <xx> literals in elm DT node
  mtd: gpmi: fix a dereferencing freed memory error
  mtd: fix the wrong timeo for panic_nand_wait()
  ...
2013-03-02 16:33:54 -08:00
Linus Torvalds aebb2afd54 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:

 o Add basic support for the Mediatek/Ralink Wireless SoC family.

 o The Qualcomm Atheros platform is extended by support for the new
   QCA955X SoC series as well as a bunch of patches that get the code
   ready for OF support.

 o Lantiq and BCM47XX platform have a few improvements and bug fixes.

 o MIPS has sent a few patches that get the kernel ready for the
   upcoming microMIPS support.

 o The rest of the series is made up of small bug fixes and cleanups
   that relate to various parts of the MIPS code.  The biggy in there is
   a whitespace cleanup.  After I was sent another set of whitespace
   cleanup patches I decided it was the time to clean the whitespace
   "issues" for once and and that touches many files below arch/mips/.

Fix up silly conflicts, mostly due to whitespace cleanups.

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (105 commits)
  MIPS: Quit exporting kernel internel break codes to uapi/asm/break.h
  MIPS: remove broken conditional inside vpe loader code
  MIPS: SMTC: fix implicit declaration of set_vi_handler
  MIPS: early_printk: drop __init annotations
  MIPS: Probe for and report hardware virtualization support.
  MIPS: ath79: add support for the Qualcomm Atheros AP136-010 board
  MIPS: ath79: add USB controller registration code for the QCA955X SoCs
  MIPS: ath79: add PCI controller registration code for the QCA955X SoCs
  MIPS: ath79: add WMAC registration code for the QCA955X SoCs
  MIPS: ath79: register UART for the QCA955X SoCs
  MIPS: ath79: add QCA955X specific glue to ath79_device_reset_{set, clear}
  MIPS: ath79: add GPIO setup code for the QCA955X SoCs
  MIPS: ath79: add IRQ handling code for the QCA955X SoCs
  MIPS: ath79: add clock setup code for the QCA955X SoCs
  MIPS: ath79: add SoC detection code for the QCA955X SoCs
  MIPS: ath79: add early printk support for the QCA955X SoCs
  MIPS: ath79: fix WMAC IRQ resource assignment
  mips: reserve elfcorehdr
  mips: Make sure kernel memory is in iomem
  MIPS: ath79: use dynamically allocated USB platform devices
  ...
2013-03-02 07:44:16 -08:00
Akinobu Mita 4debec7abc mtd: mtd_stresstest: use prandom_bytes()
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Artem Bityutskiy <dedekind1@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Laight <david.laight@aculab.com>
Cc: Eilon Greenstein <eilong@broadcom.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Robert Love <robert.w.love@intel.com>
Cc: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 19:10:23 -08:00
Akinobu Mita a312b78b0a mtd: mtd_subpagetest: convert to use prandom library
This removes home-brewed pseudo-random number generator and use
prandom library.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Artem Bityutskiy <dedekind1@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Laight <david.laight@aculab.com>
Cc: Eilon Greenstein <eilong@broadcom.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Robert Love <robert.w.love@intel.com>
Cc: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 19:10:23 -08:00
Akinobu Mita 99672f32aa mtd: mtd_speedtest: use prandom_bytes
Use prandom_bytes instead of equivalent local function.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Artem Bityutskiy <dedekind1@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Laight <david.laight@aculab.com>
Cc: Eilon Greenstein <eilong@broadcom.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Robert Love <robert.w.love@intel.com>
Cc: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 19:10:22 -08:00
Akinobu Mita 825b8ccb74 mtd: mtd_pagetest: convert to use prandom library
This removes home-brewed pseudo-random number generator and use
prandom library.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Artem Bityutskiy <dedekind1@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Laight <david.laight@aculab.com>
Cc: Eilon Greenstein <eilong@broadcom.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Robert Love <robert.w.love@intel.com>
Cc: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 19:10:22 -08:00
Akinobu Mita 8dad049884 mtd: mtd_oobtest: convert to use prandom library
This removes home-brewed pseudo-random number generator and use
prandom library.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Artem Bityutskiy <dedekind1@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Laight <david.laight@aculab.com>
Cc: Eilon Greenstein <eilong@broadcom.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Robert Love <robert.w.love@intel.com>
Cc: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 19:10:22 -08:00
Akinobu Mita 459a86d83d mtd: mtd_nandecctest: use prandom_bytes instead of get_random_bytes()
Using prandom_bytes() is enough.  Because this data is only used
for testing, not used for cryptographic use.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Artem Bityutskiy <dedekind1@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Laight <david.laight@aculab.com>
Cc: Eilon Greenstein <eilong@broadcom.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Robert Love <robert.w.love@intel.com>
Cc: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 19:10:22 -08:00
Tejun Heo 589e9c4dac mtd: convert to idr_alloc()
Convert to the much saner new idr interface.

Signed-off-by: Tejun Heo <tj@kernel.org>
Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 19:10:18 -08:00
Linus Torvalds d895cb1af1 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs pile (part one) from Al Viro:
 "Assorted stuff - cleaning namei.c up a bit, fixing ->d_name/->d_parent
  locking violations, etc.

  The most visible changes here are death of FS_REVAL_DOT (replaced with
  "has ->d_weak_revalidate()") and a new helper getting from struct file
  to inode.  Some bits of preparation to xattr method interface changes.

  Misc patches by various people sent this cycle *and* ocfs2 fixes from
  several cycles ago that should've been upstream right then.

  PS: the next vfs pile will be xattr stuff."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (46 commits)
  saner proc_get_inode() calling conventions
  proc: avoid extra pde_put() in proc_fill_super()
  fs: change return values from -EACCES to -EPERM
  fs/exec.c: make bprm_mm_init() static
  ocfs2/dlm: use GFP_ATOMIC inside a spin_lock
  ocfs2: fix possible use-after-free with AIO
  ocfs2: Fix oops in ocfs2_fast_symlink_readpage() code path
  get_empty_filp()/alloc_file() leave both ->f_pos and ->f_version zero
  target: writev() on single-element vector is pointless
  export kernel_write(), convert open-coded instances
  fs: encode_fh: return FILEID_INVALID if invalid fid_type
  kill f_vfsmnt
  vfs: kill FS_REVAL_DOT by adding a d_weak_revalidate dentry op
  nfsd: handle vfs_getattr errors in acl protocol
  switch vfs_getattr() to struct path
  default SET_PERSONALITY() in linux/elf.h
  ceph: prepopulate inodes only when request is aborted
  d_hash_and_lookup(): export, switch open-coded instances
  9p: switch v9fs_set_create_acl() to inode+fid, do it before d_instantiate()
  9p: split dropping the acls from v9fs_set_create_acl()
  ...
2013-02-26 20:16:07 -08:00
Linus Torvalds 5115f3c19d Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine updates from Vinod Koul:
 "This is fairly big pull by my standards as I had missed last merge
  window.  So we have the support for device tree for slave-dmaengine,
  large updates to dw_dmac driver from Andy for reusing on different
  architectures.  Along with this we have fixes on bunch of the drivers"

Fix up trivial conflicts, usually due to #include line movement next to
each other.

* 'next' of git://git.infradead.org/users/vkoul/slave-dma: (111 commits)
  Revert "ARM: SPEAr13xx: Pass DW DMAC platform data from DT"
  ARM: dts: pl330: Add #dma-cells for generic dma binding support
  DMA: PL330: Register the DMA controller with the generic DMA helpers
  DMA: PL330: Add xlate function
  DMA: PL330: Add new pl330 filter for DT case.
  dma: tegra20-apb-dma: remove unnecessary assignment
  edma: do not waste memory for dma_mask
  dma: coh901318: set residue only if dma is in progress
  dma: coh901318: avoid unbalanced locking
  dmaengine.h: remove redundant else keyword
  dma: of-dma: protect list write operation by spin_lock
  dmaengine: ste_dma40: do not remove descriptors for cyclic transfers
  dma: of-dma.c: fix memory leakage
  dw_dmac: apply default dma_mask if needed
  dmaengine: ioat - fix spare sparse complain
  dmaengine: move drivers/of/dma.c -> drivers/dma/of-dma.c
  ioatdma: fix race between updating ioat->head and IOAT_COMPLETION_PENDING
  dw_dmac: add support for Lynxpoint DMA controllers
  dw_dmac: return proper residue value
  dw_dmac: fill individual length of descriptor
  ...
2013-02-26 09:24:48 -08:00
Al Viro 7bb307e894 export kernel_write(), convert open-coded instances
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-26 02:46:11 -05:00
Al Viro 496ad9aa8e new helper: file_inode(file)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22 23:31:31 -05:00
Linus Torvalds a8f3740feb arm-soc: device tree conversions
These are device tree conversions for a number of platforms,
 with the intention of turning code from board files into
 device tree descriptions. Notable changes are:
 
 * davinci bindings for pinctrl, MTD, RTC, watchdog and i2c
 * nomadik bindings for all devices, removing the board files
 * bcm2835 bindings for mmc and i2c
 * tegra bindings for hdmi, keyboard, audio, as well as some updates
 * at91 bindings for hardware ecc and for devices on RM9200
 * mxs bindings for cfa100xx
 * sunxi support for Miniand Hackberry board
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Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC device tree conversions from Arnd Bergmann:
 "These are device tree conversions for a number of platforms, with the
  intention of turning code from board files into device tree
  descriptions.  Notable changes are:

   - davinci bindings for pinctrl, MTD, RTC, watchdog and i2c

   - nomadik bindings for all devices, removing the board files

   - bcm2835 bindings for mmc and i2c

   - tegra bindings for hdmi, keyboard, audio, as well as some updates

   - at91 bindings for hardware ecc and for devices on RM9200

   - mxs bindings for cfa100xx

   - sunxi support for Miniand Hackberry board"

* tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (72 commits)
  Revert "sunxi: a10-cubieboard: Add user LEDs to the device tree"
  Revert "sunxi: a13-olinuxino: Add user LED to the device tree"
  clk: tegra: initialise parent of uart clocks
  ARM: tegra: remove clock-frequency properties from serial nodes
  clk: tegra: fix driver to match DT binding
  clk: tegra: local arrays should be static
  clk: tegra: Add missing spinlock for hclk and pclk
  clk: tegra: Implement locking for super clock
  clk: tegra: fix wrong clock index between se to sata_cold
  sunxi: a13-olinuxino: Add user LED to the device tree
  ARM: davinci: da850 DT: add support for machine reboot
  ARM: davinci: da850: add wdt DT node
  ARM: davinci: da850: add DT node for I2C0
  ARM: at91: at91sam9n12: add DT parameters to enable PMECC
  ARM: at91: at91sam9x5: add DT parameters to enable PMECC
  ARM: at91: add EMAC bindings to RM9200 DT
  ARM: at91: add SSC bindings to RM9200 DT
  ARM: at91: add MMC bindings to RM9200 DT
  ARM: at91: Animeo IP: enable watchdog support
  ARM: nomadik: fix OF compilation regression
  ...
2013-02-21 15:38:49 -08:00
Linus Torvalds 5ce7aba976 arm-soc: driver specific changes
* Updates to the ux500 cpufreq code
 * Moving the u300 DMA controller driver to drivers/dma
 * Moving versatile express drivers out of arch/arm for sharing with arch/arm64
 * Device tree bindings for the OMAP General Purpose Memory Controller
 
 There is a simple conflict in drivers/cpufreq/dbx500-cpufreq.c, because
 the mach/id.h header and the cpu_is_u8500_family() function in it are
 now gone.
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Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver specific changes from Arnd Bergmann:

 - Updates to the ux500 cpufreq code

 - Moving the u300 DMA controller driver to drivers/dma

 - Moving versatile express drivers out of arch/arm for sharing with arch/arm64

 - Device tree bindings for the OMAP General Purpose Memory Controller

* tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (27 commits)
  ARM: OMAP2+: gpmc: Add device tree documentation for elm handle
  ARM: OMAP2+: gpmc: add DT bindings for OneNAND
  ARM: OMAP2+: gpmc-onenand: drop __init annotation
  mtd: omap-onenand: pass device_node in platform data
  ARM: OMAP2+: Prevent potential crash if GPMC probe fails
  ARM: OMAP2+: gpmc: Remove unneeded of_node_put()
  arm: Move sp810.h to include/linux/amba/
  ARM: OMAP: gpmc: add DT bindings for GPMC timings and NAND
  ARM: OMAP: gpmc: enable hwecc for AM33xx SoCs
  ARM: OMAP: gpmc-nand: drop __init annotation
  mtd: omap-nand: pass device_node in platform data
  ARM: OMAP: gpmc: don't create devices from initcall on DT
  dma: coh901318: cut down on platform data abstraction
  dma: coh901318: merge header files
  dma: coh901318: push definitions into driver
  dma: coh901318: push header down into the DMA subsystem
  dma: coh901318: skip hard-coded addresses
  dma: coh901318: remove hardcoded target addresses
  dma: coh901318: push platform data into driver
  dma: coh901318: create a proper platform data file
  ...
2013-02-21 15:12:18 -08:00
Linus Torvalds 06991c28f3 Driver core patches for 3.9-rc1
Here is the big driver core merge for 3.9-rc1
 
 There are two major series here, both of which touch lots of drivers all
 over the kernel, and will cause you some merge conflicts:
   - add a new function called devm_ioremap_resource() to properly be
     able to check return values.
   - remove CONFIG_EXPERIMENTAL
 
 If you need me to provide a merged tree to handle these resolutions,
 please let me know.
 
 Other than those patches, there's not much here, some minor fixes and
 updates.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core patches from Greg Kroah-Hartman:
 "Here is the big driver core merge for 3.9-rc1

  There are two major series here, both of which touch lots of drivers
  all over the kernel, and will cause you some merge conflicts:

   - add a new function called devm_ioremap_resource() to properly be
     able to check return values.

   - remove CONFIG_EXPERIMENTAL

  Other than those patches, there's not much here, some minor fixes and
  updates"

Fix up trivial conflicts

* tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (221 commits)
  base: memory: fix soft/hard_offline_page permissions
  drivercore: Fix ordering between deferred_probe and exiting initcalls
  backlight: fix class_find_device() arguments
  TTY: mark tty_get_device call with the proper const values
  driver-core: constify data for class_find_device()
  firmware: Ignore abort check when no user-helper is used
  firmware: Reduce ifdef CONFIG_FW_LOADER_USER_HELPER
  firmware: Make user-mode helper optional
  firmware: Refactoring for splitting user-mode helper code
  Driver core: treat unregistered bus_types as having no devices
  watchdog: Convert to devm_ioremap_resource()
  thermal: Convert to devm_ioremap_resource()
  spi: Convert to devm_ioremap_resource()
  power: Convert to devm_ioremap_resource()
  mtd: Convert to devm_ioremap_resource()
  mmc: Convert to devm_ioremap_resource()
  mfd: Convert to devm_ioremap_resource()
  media: Convert to devm_ioremap_resource()
  iommu: Convert to devm_ioremap_resource()
  drm: Convert to devm_ioremap_resource()
  ...
2013-02-21 12:05:51 -08:00
Hauke Mehrtens 111bd981e2 MIPS: BCM47XX: add bcm47xx prefix in front of nvram function names
The nvram functions are exported and used by some normal drivers. To
prevent name clashes with ofter parts of the kernel code add a bcm47xx_
prefix in front of the function names and the header file name.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4744/
Signed-off-by: John Crispin <blogic@openwrt.org>
2013-02-15 19:01:57 +01:00
Rafał Miłecki be0638d9e4 mtd: bcm47xxnflash: use pr_fmt for module prefix in messages
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-13 15:15:50 +02:00
Mrugesh Katepallewar ef4e0c2145 mtd: davinci_nand: Use managed resources
davinci_nand driver currently uses normal kzalloc, ioremap and get_clk
routines. This patch replaces these routines with devm_kzalloc,
devm_request_and_ioremap and devm_clk_get resp.

Signed-off-by: Mrugesh Katepallewar <mrugesh.mk@ti.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-13 15:14:02 +02:00
Al Cooper 221b1bd3d4 mtd: mtd_torturetest can cause stack overflows
mtd_torturetest uses the module parm "ebcnt" to control the size of a
stack based array of int's. When "ebcnt" is large, Ex: 1000, it
causes stack overflows on systems with small kernel stacks. The fix
is to move the array from the stack to kmalloc memory.

Signed-off-by: Al Cooper <alcooperx@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-13 14:49:42 +02:00
Ezequiel Garcia eb82038f97 mtd: physmap_of: Convert device allocation to managed devm_kzalloc()
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-12 18:10:46 +02:00
Josh Wu 84cfbbb85a mtd: at91: atmel_nand: for PMECC, add code to check the ONFI parameter ECC requirement.
This patch will check NAND flash's ecc minimum requirement in ONFI parameter.

1. if pmecc-cap, pmecc-sector-size is set in dts. then use it. Driver will
   print out a WARNING if the values are different from ONFI parameters.
2. if pmecc-cap, pmecc-sector-size is not set in dts, then use the value
   from ONFI parameters.
    * If ONFI ECC parameters are in ONFI extended parameter page, since we are
      not support it, so assume the minimum ecc requirement is 2 bits in 512
      bytes.
    * For non-ONFI support nand flash, also assume the minimum ecc requirement is
      2 bits in 512 bytes.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-12 17:01:02 +02:00
Josh Wu e66b4318f8 mtd: atmel_nand: make pmecc-cap, pmecc-sector-size in dts is optional.
If those two are not specified in dts file, driver will report an error.

TODO: in this case, driver will find ecc requirement in NAND ONFI parameters.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-12 17:00:54 +02:00
Josh Wu c0cf787f10 mtd: atmel_nand: avoid to report an error when lookup table offset is 0.
Before this patch, we assume the whole ROM code are mapping to memory. So
it is wrong if the lookup table offset is 0.

After this patch, we can map only the lookup table of ROM code to memory
intead of the whole ROM code (about 1M). In this case, one lookup table
offset can be 0.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-12 17:00:48 +02:00
Linus Torvalds d92dd35920 A small set of simple regression and build fixes for 3.8:
- Fix a warning introduced in ONFI NAND probe
  - Fix commandline partition parsing
  - Require BITREVERSE for DiskOnChip G3 driver
  - Fix build failure for davinci_nand as module
  - Bump NFLASH_READY_RETRIES for bcm47xxnflash
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Merge tag 'for-linus-20130204' of git://git.infradead.org/linux-mtd

Pull MTD fixes from David Woodhouse:
 "A small set of simple regression and build fixes for 3.8:
   - Fix a warning introduced in ONFI NAND probe
   - Fix commandline partition parsing
   - Require BITREVERSE for DiskOnChip G3 driver
   - Fix build failure for davinci_nand as module
   - Bump NFLASH_READY_RETRIES for bcm47xxnflash"

* tag 'for-linus-20130204' of git://git.infradead.org/linux-mtd:
  mtd: nand: onfi don't WARN if we are in 16 bits mode
  mtd: physmap_of: fix cmdline partition method w/o linux, mtd-name
  mtd: docg3 fix missing bitreverse lib
  mtd: davinci_nand: fix modular build with CONFIG_OF=y
  mtd: bcm47xxnflash: increase NFLASH_READY_RETRIES
2013-02-05 07:54:11 +11:00
Rafał Miłecki f1a7c9d350 mtd: bcm47xxsflash: adjust names of bus-specific functions
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 11:17:05 +02:00
Hauke Mehrtens be3781b71a mtd: bcm47xxpart: improve probing of nvram partition
The nvram in the nvram partition does not start at the beginning of the
partition on every device. Sometimes they are stating in the middle of
a partition or the first 0x1000 bytes are free.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 10:31:36 +02:00
Hauke Mehrtens 25bad1d3c9 mtd: bcm47xxpart: add support for other erase sizes
To make the partitions writable they should aligned to erase sizes of
the flash. If the erase size is small use 0x10000.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 10:31:33 +02:00
Hauke Mehrtens a7bf6543e8 mtd: bcm47xxnflash: register this as normal driver
When platform_driver_probe() is used and no device is registered for
this driver -ENODEV is returned and and error message is shown. Not all
BCM47xx SoC have a nand flash chip controller and chip and for them an
error message was shown.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 10:31:30 +02:00
Hauke Mehrtens 0fca6ab4e1 mtd: bcm47xxnflash: fix message
This is not a serial flash driver, but a nand flash driver

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 10:31:27 +02:00
Hauke Mehrtens 2d13dc3bce mtd: bcm47xxsflash: register this as normal driver
When platform_driver_probe() is used and no device is registered for
this driver -ENODEV is returned and and error message is shown. Not all
BCM47xx SoC have a serial flash chip controller and chip and for them
an error message was shown.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 10:31:23 +02:00
Hauke Mehrtens 60aca067b5 mtd: bcm47xxsflash: write number of written bytes
The callback assumes the number of read bytes is written to retlen.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 10:31:20 +02:00
Huang Shijie 92d0e09abe mtd: gpmi: add sanity check for the ECC
We do the check based on the following two facts:

[1] The mx23/mx28 can only support 20-bits ECC, while the mx6
    can supports 40-bits ECC.

[2] The mx23/mx28 can only support the GF13, while the mx6
    can supports GF13 and GF14.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 10:28:02 +02:00
Huang Shijie 9ff16f0833 mtd: gpmi: set the Golois Field bit for mx6q's BCH
The GF13 can be only used in the following case:
    The ECC data chunk is less then 1K bytes.

In mx23/mx28, the ecc data chunk is 512 bytes. So it is okay.

But in mx6q, we begin to use some large nand chip whose ecc
data chunk maybe 1K bytes long.  So when the data chunk is 1K bytes,
we have to use the GF14.

This patch sets the Golois Field bit when the GF14 is needed.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 10:27:59 +02:00
Philip Avinash c80e572c02 mtd: devices: elm: Removes <xx> literals in elm DT node
As part of removing generalized dependency, replace <xx> literal fields
in DT compatible field with <52> for am335x platforms.

Signed-off-by: Philip Avinash <avinashphilip@ti.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 10:07:11 +02:00
Huang Shijie 26738ddb85 mtd: gpmi: fix a dereferencing freed memory error
The patch "490e280 mtd: gpmi-nand: Convert to module_platform_driver()"
introduced a "dereferencing freed memory" error.

This patch fixes it.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 10:06:31 +02:00
Huang Shijie 6d2559f8bc mtd: fix the wrong timeo for panic_nand_wait()
The panic_nand_wait() expects the timeo in ms and not in jiffies.
But in nand_wait(), the timeo for panic_nand_wait() is assigned with
wrong value(jiffies + some delay). The timeo should be set like the
panic_nand_write() does.

This patch passes timeo in ms to panic_nand_wait().
And this patch also passes timeo in jiffies(converted by msecs_to_jiffies)
to time_before() which makes the code more readable.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 09:36:39 +02:00
Stefan Roese 1648eaaa15 mtd: cfi_cmdset_0002: Support Persistent Protection Bits (PPB) locking
Currently cfi_cmdset_0002.c does not support PPB locking of sectors. This
patch adds support for this locking/unlocking mechanism. It is needed on
some platforms, since newer U-Boot versions do support this PPB locking
and protect for example their environment sector(s) this way.

This PPB locking/unlocking will be enabled for all devices supported by
cfi_cmdset_0002 reporting 8 in the CFI word 0x49 (Sector Protect/Unprotect
scheme).

Please note that PPB locking does support sector-by-sector locking. But
the whole chip can only be unlocked together. So unlocking one sector
will automatically unlock all sectors of this device. Because of this
chip limitation, the PPB unlocking function saves the current locking
status of all sectors before unlocking the whole device. After unlocking
the saved locking status is re-configured. This way only the addressed
sectors will be unlocked.

To selectively enable this advanced sector protection mechanism, the
device-tree property "use-advanced-sector-protection" has been created.
To enable support for this locking this property needs to be present in the
flash DT node. E.g.:

nor_flash@0,0 {
	compatible = "amd,s29gl256n", "cfi-flash";
	bank-width = <2>;
	use-advanced-sector-protection;
	...

Tested with Spansion S29GL512S10THI and Micron JS28F512M29EWx flash
devices.

Signed-off-by: Stefan Roese <sr@denx.de>
Tested-by: Holger Brunck <holger.brunck@keymile.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 09:27:33 +02:00
Lubomir Rintel 422f3890a6 mtd: Allow removal of partitioning modules
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 09:27:33 +02:00
Lubomir Rintel f5f172dc03 mtd: cmdlinepart: Make it into a module
All other partitioning schemes can be compiled as modules

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 09:27:33 +02:00
Huang Shijie f722689346 mtd: gpmi: dump the BCH registers
Dump the BCH registers in gpmi_dump_info().

Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 09:27:33 +02:00
Tormod Volden 54cccc7094 mtd: nane: print source of error message
Add the function name to the error message.

These messages are not very helpful:

[183356.176682] uncorrectable error :
[183356.180273] uncorrectable error :
[183356.184194] uncorrectable error :
[183356.187773] uncorrectable error :
[183356.191280] uncorrectable error :

Artem: amended the patch a bit

Signed-off-by: Tormod Volden <debian.tormod@gmail.com>
2013-02-04 09:27:19 +02:00
Kim Phillips 0c69fb037a mtd: fsl_ifc_nand: use more portable i/o accessors
in/out_be32 accessors are Power arch centric whereas
ioread/writebe32 are available in other arches.

Since the IFC device registers are annotated big endian in
fsl_ifc.h, the accessor annotations now match, resulting in the
pleasant side-effect of this patch silencing sparse endian
warnings such as the following:

drivers/mtd/nand/fsl_ifc_nand.c:179:19: warning: incorrect type in argument 1 (different base types)
drivers/mtd/nand/fsl_ifc_nand.c:179:19:    expected unsigned int volatile [noderef] [usertype] <asn:2>*addr
drivers/mtd/nand/fsl_ifc_nand.c:179:19:    got restricted __be32 [noderef] <asn:2>*<noident>

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 09:26:30 +02:00
Uwe Kleine-König 44fe63fc0f mtd: uclinux: add a comment about why uclinux_ram_map must not be static
I was (at least) the second person trying to fix a warning by sparse, so
document in the code why this is a bad idea and add an extern declaration to
make sparse happy.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04 09:26:30 +02:00