Commit Graph

135 Commits

Author SHA1 Message Date
David S. Miller 32e5897da1 openprom: Squelch useless GCC warning.
drivers/sbus/char/openprom.c: In function ‘openprom_sunos_ioctl’:
drivers/sbus/char/openprom.c:306: warning: ‘opp’ may be used uninitialized in this function

Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-16 04:56:57 -07:00
Tejun Heo 9934c8c045 block: implement and enforce request peek/start/fetch
Till now block layer allowed two separate modes of request execution.
A request is always acquired from the request queue via
elv_next_request().  After that, drivers are free to either dequeue it
or process it without dequeueing.  Dequeue allows elv_next_request()
to return the next request so that multiple requests can be in flight.

Executing requests without dequeueing has its merits mostly in
allowing drivers for simpler devices which can't do sg to deal with
segments only without considering request boundary.  However, the
benefit this brings is dubious and declining while the cost of the API
ambiguity is increasing.  Segment based drivers are usually for very
old or limited devices and as converting to dequeueing model isn't
difficult, it doesn't justify the API overhead it puts on block layer
and its more modern users.

Previous patches converted all block low level drivers to dequeueing
model.  This patch completes the API transition by...

* renaming elv_next_request() to blk_peek_request()

* renaming blkdev_dequeue_request() to blk_start_request()

* adding blk_fetch_request() which is combination of peek and start

* disallowing completion of queued (not started) requests

* applying new API to all LLDs

Renamings are for consistency and to break out of tree code so that
it's apparent that out of tree drivers need updating.

[ Impact: block request issue API cleanup, no functional change ]

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Mike Miller <mike.miller@hp.com>
Cc: unsik Kim <donari75@gmail.com>
Cc: Paul Clements <paul.clements@steeleye.com>
Cc: Tim Waugh <tim@cyberelk.net>
Cc: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Laurent Vivier <Laurent@lvivier.info>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: Borislav Petkov <petkovbb@googlemail.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alex Dubov <oakad@yahoo.com>
Cc: Pierre Ossman <drzeus@drzeus.cx>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Markus Lidel <Markus.Lidel@shadowconnect.com>
Cc: Stefan Weinhuber <wein@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Pete Zaitcev <zaitcev@redhat.com>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-05-11 09:52:18 +02:00
Tejun Heo 6b0bf407b5 jsflash: dequeue in-flight request
jsflash processes requests one-by-one synchronously from a kthread and
can be easily converted to dequeueing model.  Convert it.

[ Impact: dequeue in-flight request ]

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-05-11 09:52:17 +02:00
Tejun Heo 1011c1b9f2 block: blk_rq_[cur_]_{sectors|bytes}() usage cleanup
With the previous changes, the followings are now guaranteed for all
requests in any valid state.

* blk_rq_sectors() == blk_rq_bytes() >> 9
* blk_rq_cur_sectors() == blk_rq_cur_bytes() >> 9

Clean up accessor usages.  Notable changes are

* nbd,i2o_block: end_all used instead of explicit byte count
* scsi_lib: unnecessary conditional on request type removed

[ Impact: cleanup ]

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Paul Clements <paul.clements@steeleye.com>
Cc: Pete Zaitcev <zaitcev@redhat.com>
Cc: Alex Dubov <oakad@yahoo.com>
Cc: Markus Lidel <Markus.Lidel@shadowconnect.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-05-11 09:50:55 +02:00
Tejun Heo 83096ebf12 block: convert to pos and nr_sectors accessors
With recent cleanups, there is no place where low level driver
directly manipulates request fields.  This means that the 'hard'
request fields always equal the !hard fields.  Convert all
rq->sectors, nr_sectors and current_nr_sectors references to
accessors.

While at it, drop superflous blk_rq_pos() < 0 test in swim.c.

[ Impact: use pos and nr_sectors accessors ]

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Tested-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Tested-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Acked-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Acked-by: Mike Miller <mike.miller@hp.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: Borislav Petkov <petkovbb@googlemail.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Eric Moore <Eric.Moore@lsi.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Pete Zaitcev <zaitcev@redhat.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Paul Clements <paul.clements@steeleye.com>
Cc: Tim Waugh <tim@cyberelk.net>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Alex Dubov <oakad@yahoo.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Dario Ballabio <ballabio_dario@emc.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: unsik Kim <donari75@gmail.com>
Cc: Laurent Vivier <Laurent@lvivier.info>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-05-11 09:50:54 +02:00
Tejun Heo f06d9a2b52 block: replace end_request() with [__]blk_end_request_cur()
end_request() has been kept around for backward compatibility;
however, it's about time for it to go away.

* There aren't too many users left.

* Its use of @updtodate is pretty confusing.

* In some cases, newer code ends up using mixture of end_request() and
  [__]blk_end_request[_all](), which is way too confusing.

So, add [__]blk_end_request_cur() and replace end_request() with it.
Most conversions are straightforward.  Noteworthy ones are...

* paride/pcd: next_request() updated to take 0/-errno instead of 1/0.

* paride/pf: pf_end_request() and next_request() updated to take
  0/-errno instead of 1/0.

* xd: xd_readwrite() updated to return 0/-errno instead of 1/0.

* mtd/mtd_blkdevs: blktrans_discard_request() updated to return
  0/-errno instead of 1/0.  Unnecessary local variable res
  initialization removed from mtd_blktrans_thread().

[ Impact: cleanup ]

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Joerg Dorchain <joerg@dorchain.net>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Laurent Vivier <Laurent@lvivier.info>
Cc: Tim Waugh <tim@cyberelk.net>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Markus Lidel <Markus.Lidel@shadowconnect.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Pete Zaitcev <zaitcev@redhat.com>
Cc: unsik Kim <donari75@gmail.com>
2009-04-28 07:37:36 +02:00
Stoyan Gaydarov 6c0f8bc772 sbus: changed ioctls to unlocked
Signed-off-by: Stoyan Gaydarov <stoyboyker@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-14 19:46:19 -07:00
Scott James Remnant 1c339eb183 sbus: Auto-load openprom module when device opened.
The openprom module is missing the char-major-10-139 alias that would
cause it to be auto-loaded when a device of that type is opened.  This
patch adds the alias.

Signed-off-by: Scott James Remnant <scott@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 14:30:08 -07:00
Roel Kluin f4c1363818 sparc64: wait_event_interruptible_timeout may return -ERESTARTSYS
wait_event_interruptible_timeout may return -ERESTARTSYS.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-04 00:19:28 -08:00
Christoph Hellwig c21986a762 jsflash: stop defining MAJOR_NR
Ever since early 2.5 kernels block drivers don't need to define MAJOR_NR
anymore, so use the JSFD_MAJOR defined directly and kill it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-04 00:18:11 -08:00
Sam Ravnborg 3f4528d6e9 sparc64: Fix unsigned long long warnings in drivers.
Fix warnings caused by the unsigned long long usage in sparc
specific drivers.

The drivers were considered sparc specific more or less from the
filename alone.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-06 13:20:38 -08:00
Linus Torvalds 33b07db9f3 Revert "of_platform_driver noise on sparce"
This reverts commit e669dae614, since it
is incomplete, and clashes with fuller patches and the sparc 32/64
unification effort.

Requested-by: David Miller <davem@davemloft.net>
Acked-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-01 07:55:14 -08:00
Al Viro e669dae614 of_platform_driver noise on sparce
switch to __init for those; unlike powerpc sparc has no hotplug support
for that stuff and their ->probe() tends to call __init functions while
being declared __devinit.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-30 10:03:36 -08:00
Jianjun Kong 54074d5932 drivers: remove duplicated #include
Signed-off-by: Jianjun Kong <jianjun@zeuux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-04 08:18:19 -08:00
David S. Miller eed795bf1f sparc: Kill sbus mostek RTC driver.
No longer used.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-03 15:55:32 -07:00
David S. Miller fd098316ef sparc: Annotate of_device_id arrays with const or __initdata.
As suggested by Stephen Rothwell.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-31 01:23:17 -07:00
David S. Miller 39890072b3 bbc_envctrl: Fix build errors from bbc_i2c OF conversion.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29 22:55:14 -07:00
David S. Miller e21e245bcd bbc_i2c: Convert to pure OF driver.
This thing was a mess, who wrote this junk? :)

Luckily we'll soon have nice generic I2C layer drivers for this PCF
based I2C stuff on sparc64.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29 22:34:14 -07:00
David S. Miller 6b8c90f24e envctrl: Convert to pure OF driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29 21:05:15 -07:00
David S. Miller 95d4390579 display7seg: Convert to pure OF device driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29 18:01:58 -07:00
David S. Miller 8ab0dc333e cpwatchdog: Move to drivers/watchdog/cpwd.c
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29 17:07:01 -07:00
David S. Miller c5f8556cb5 cpwatchdog: Cleanup and convert to pure OF driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29 17:05:51 -07:00
David S. Miller 957183f32e riowatchdog: Move under drivers/watchdog
The config stuff was already in drivers/watchdog/Kconfig

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29 15:40:24 -07:00
David S. Miller e42311d751 riowatchdog: Convert to pure OF driver.
This also cleans up a lot of crud in this driver:

1) Don't touch the BBC regs, just leave the watchdog trigger
   behavior whatever the firmware programmed it to.

2) Use WATCHDOG_MINOR instead of hardcoded and not properly
   allocated RIOWD_MINOR.

Hey, I haven't touched it since I wrote it years ago :-)

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29 15:35:59 -07:00
David S. Miller 237f8aafa3 sparc: Convert uctrl driver to OF driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29 02:15:01 -07:00
David S. Miller a9540d3422 sparc: Convert flash driver to OF device probing.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29 02:15:00 -07:00
David S. Miller 7f06a3b2c1 sparc: Kill videopix SBUS driver.
This has been marked BROKEN for a long time and it's more likely
to get rewritten from scratch than to be fixed up and made usable.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29 02:13:09 -07:00
David S. Miller 902663f6ea sparc: Delete bare sbus char bpp driver, obsoleted by parport_sunbpp
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29 02:13:08 -07:00
Adrian Bunk 960681450f drivers/sbus/: cleanups
This patch contains the following cleanups:
- make the following needlessly global code static:
  - char/uctrl.c: uctrl_get_event_status()
  - char/uctrl.c: uctrl_get_external_status()
  - char/vfc_dev.c: struct vfc_dev_lst
  - char/vfc_dev.c: vfc_lock_device()
  - char/vfc_dev.c: vfc_unlock_device()
  - char/vfc_dev.c: vfc_captstat_reset()
  - char/vfc_dev.c: vfc_memptr_reset()
  - char/vfc_dev.c: vfc_csr_init()
  - char/vfc_dev.c: vfc_saa9051_init()
  - char/vfc_dev.c: init_vfc_hw()
  - char/vfc_dev.c: init_vfc_devstruct()
  - char/vfc_dev.c: init_vfc_device()
  - char/vfc_dev.c: vfc_get_dev_ptr()
  - char/vfc_dev.c: vfc_capture_start()
  - char/vfc_dev.c: vfc_capture_poll()
  - char/vfc_dev.c: vfc_port_change_ioctl()
  - char/vfc_dev.c: vfc_set_video_ioctl()
  - char/vfc_dev.c: vfc_get_video_ioctl()
  - char/vfc_i2c.c: vfc_i2c_wait_for_bus()
  - char/vfc_i2c.c: vfc_i2c_wait_for_pin()
  - char/vfc_i2c.c: vfc_i2c_xmit_addr()
  - char/vfc_i2c.c: vfc_i2c_xmit_byte()
  - char/vfc_i2c.c: vfc_i2c_recv_byte()
  - dvma.c: init_one_dvma()
- remove an unused variable from a function:
  - char/uctrl.c: ts102_uctrl_init()
- remove the following unused and empty function:
  - char/uctrl.c: uctrl_set_video()

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-17 21:38:17 -07:00
Jonathan Corbet 2fceef397f Merge commit 'v2.6.26' into bkl-removal 2008-07-14 15:29:34 -06:00
Arnd Bergmann f138e4814a uctrl: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-07-02 15:06:25 -06:00
Arnd Bergmann 5ab0854dd7 sbus-rtc: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-07-02 15:06:24 -06:00
Arnd Bergmann f29b889ede riowatchdog: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-07-02 15:06:24 -06:00
Arnd Bergmann 7bcc3209be openprom: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-07-02 15:06:24 -06:00
Arnd Bergmann 28fbbf4913 jsflash: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-06-20 14:05:58 -06:00
Arnd Bergmann 78abb6ac91 flash: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-06-20 14:05:57 -06:00
Arnd Bergmann 1d17bf0c08 envctrl: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-06-20 14:05:56 -06:00
Arnd Bergmann 009228dfb6 display7seg: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-06-20 14:05:55 -06:00
Arnd Bergmann b05c9e6cd9 cpwatchdog: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-06-20 14:05:55 -06:00
Jonathan Corbet 9aaf20cbf5 videopix: BKL pushdown
Add explicit lock_kernel() calls to vfc_open().

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-06-20 14:05:52 -06:00
Jonathan Corbet 5e9829ad38 bpp: bkl pushdown
Put explicit lock_kernel() calls into bpp_open().  It has locking, but I'm
not convinced it won't race with ioctl().

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-06-20 14:05:51 -06:00
Al Viro 572abae844 sbus bpp: instances missed in s/dev_name/bpp_dev_name/
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21 16:55:59 -07:00
David S. Miller 0a6db7dc49 sbus: Fix bpp driver build.
Using the variable name 'dev_name' in the top-level namespace is a bad
idea.

This conflicts with linux/device.h's inline function of the same name.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-05 00:33:58 -07:00
Harvey Harrison 145980a0b0 drivers: replace remaining __FUNCTION__ occurrences
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30 08:29:53 -07:00
Jiri Slaby 6027f661f8 [WATCHDOG] Sbus: cpwatchdog, remove SPIN_LOCK_UNLOCKED
cpwatchdog, remove SPIN_LOCK_UNLOCKED

SPIN_LOCK_UNLOCKED is deprecated, use __SPIN_LOCK_UNLOCKED with an unique
name instead

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2007-11-19 21:09:52 +00:00
Al Viro 8add24413d vfc_dev conversion to mutex: fallout
Commit 7b96dc023a ("[SPARC] Videopix Frame
Grabber: Convert device_lock_sem to mutex") missed one place.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-20 15:04:06 -07:00
Matthias Kaehlcke 7b96dc023a [SPARC] Videopix Frame Grabber: Convert device_lock_sem to mutex
Videopix Frame Grabber: Convert the semaphore device_lock_sem to the
mutex API

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-17 19:40:31 -07:00
Mariusz Kozlowski 50aa485e1a [BBC_I2C]: kmalloc + memset conversion to kzalloc
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-31 14:04:57 -07:00
Mariusz Kozlowski 916e89fdd1 [BBC_ENVCTRL]: kmalloc + memset conversion to kzalloc
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-31 14:04:19 -07:00
Matthias Kaehlcke 2fa3195d72 [SPARC] Videopix Frame Grabber: Fix unreleased lock in vfc_debug()
Videopix Frame Grabber: vfc_debug() doesn't release the device lock
when copy_from_user() fails

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-31 01:37:24 -07:00