Commit Graph

25 Commits

Author SHA1 Message Date
Kees Cook a86854d0c5 treewide: devm_kzalloc() -> devm_kcalloc()
The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc().
This patch replaces cases of:

        devm_kzalloc(handle, a * b, gfp)

with:
        devm_kcalloc(handle, a * b, gfp)

as well as handling cases of:

        devm_kzalloc(handle, a * b * c, gfp)

with:

        devm_kzalloc(handle, array3_size(a, b, c), gfp)

as it's slightly less ugly than:

        devm_kcalloc(handle, array_size(a, b), c, gfp)

This does, however, attempt to ignore constant size factors like:

        devm_kzalloc(handle, 4 * 1024, gfp)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

Some manual whitespace fixes were needed in this patch, as Coccinelle
really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...".

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
expression HANDLE;
type TYPE;
expression THING, E;
@@

(
  devm_kzalloc(HANDLE,
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  devm_kzalloc(HANDLE,
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression HANDLE;
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  devm_kzalloc(HANDLE,
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
expression HANDLE;
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * (COUNT_ID)
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * COUNT_ID
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * (COUNT_CONST)
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * COUNT_CONST
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * (COUNT_ID)
+	COUNT_ID, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * COUNT_ID
+	COUNT_ID, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * (COUNT_CONST)
+	COUNT_CONST, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * COUNT_CONST
+	COUNT_CONST, sizeof(THING)
  , ...)
)

// 2-factor product, only identifiers.
@@
expression HANDLE;
identifier SIZE, COUNT;
@@

- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	SIZE * COUNT
+	COUNT, SIZE
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression HANDLE;
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression HANDLE;
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
expression HANDLE;
identifier STRIDE, SIZE, COUNT;
@@

(
  devm_kzalloc(HANDLE,
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression HANDLE;
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
  devm_kzalloc(HANDLE,
-	(E1) * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(E1) * (E2) * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(E1) * (E2) * (E3)
+	array3_size(E1, E2, E3)
  , ...)
|
  devm_kzalloc(HANDLE,
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression HANDLE;
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@

(
  devm_kzalloc(HANDLE, sizeof(THING) * C2, ...)
|
  devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...)
|
  devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
  devm_kzalloc(HANDLE, C1 * C2, ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * (E2)
+	E2, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * E2
+	E2, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * (E2)
+	E2, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * E2
+	E2, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	(E1) * E2
+	E1, E2
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	(E1) * (E2)
+	E1, E2
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	E1 * E2
+	E1, E2
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 16:19:22 -07:00
Markus Elfring 2e4d5494ab mfd: htc-i2cpld: Delete error message for a failed memory allocation
Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-05-16 09:21:48 +01:00
Linus Walleij ed1c9b3c18 mfd: htc-i2cpld: Use gpiochip data pointer
This makes the driver use the data pointer added to the gpio_chip
to store a pointer to the state container instead of relying on
container_of().

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-04-19 07:58:30 +01:00
Linus Walleij 58383c7842 gpio: change member .dev to .parent
The name .dev in a struct is normally reserved for a struct device
that is let us say a superclass to the thing described by the struct.
struct gpio_chip stands out by confusingly using a struct device *dev
to point to the parent device (such as a platform_device) that
represents the hardware. As we want to give gpio_chip:s real devices,
this is not working. We need to rename this member to parent.

This was done by two coccinelle scripts, I guess it is possible to
combine them into one, but I don't know such stuff. They look like
this:

@@
struct gpio_chip *var;
@@
-var->dev
+var->parent

and:

@@
struct gpio_chip var;
@@
-var.dev
+var.parent

and:

@@
struct bgpio_chip *var;
@@
-var->gc.dev
+var->gc.parent

Plus a few instances of bgpio that I couldn't figure out how
to teach Coccinelle to rewrite.

This patch hits all over the place, but I *strongly* prefer this
solution to any piecemal approaches that just exercise patch
mechanics all over the place. It mainly hits drivers/gpio and
drivers/pinctrl which is my own backyard anyway.

Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Rafał Miłecki <zajec5@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: Alek Du <alek.du@intel.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-19 09:24:35 +01:00
Javier Martinez Canillas a48baac52a mfd: htc-i2cpld: Remove unneded ret variable
The ret variable is not needed since is not used in the
function. Remove the variable and just return 0 instead.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-10-30 17:19:41 +00:00
Rob Herring 9bd09f345e mfd: Kill off set_irq_flags usage
set_irq_flags is ARM specific with custom flags which have genirq
equivalents. Convert drivers to use the genirq interfaces directly, so we
can kill off set_irq_flags. The translation of flags is as follows:

IRQF_VALID -> !IRQ_NOREQUEST
IRQF_PROBE -> !IRQ_NOPROBE
IRQF_NOAUTOEN -> IRQ_NOAUTOEN

For IRQs managed by an irqdomain, the irqdomain core code handles clearing
and setting IRQ_NOREQUEST already, so there is no need to do this in
.map() functions and we can simply remove the set_irq_flags calls. Some
users also modify IRQ_NOPROBE and this has been maintained although it
is not clear that is really needed. There appears to be a great deal of
blind copy and paste of this code.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-08-11 15:09:01 +01:00
Fabio Estevam cea2cc735a mfd: htc-i2cpld: Pass the IRQF_ONESHOT flag
Since commit 1c6c69525b ("genirq: Reject
bogus threaded irq requests") threaded IRQs without a primary handler
need to be requested with IRQF_ONESHOT, otherwise the request will fail.

So pass the IRQF_ONESHOT flag in this case.

The semantic patch that makes this change is available
in scripts/coccinelle/misc/irqf_oneshot.cocci.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-06-22 12:25:26 +01:00
Linus Torvalds fcc3a5d277 Changes to existing drivers:
- DT clean-ups in da9055-core, max14577, rn5t618, arizona, hi6421, stmpe, twl4030
   - Export symbols for use in modules in max14577
   - Plenty of static code analysis/Coccinelle fixes throughout the SS
   - Regmap clean-ups in arizona, wm5102, wm5110, da9052, tps65217, rk808
   - Remove unused/duplicate code in da9052, 88pm860x, ti_ssp, lpc_sch, arizona
   - Bug fixes in ti_am335x_tscadc, da9052, ti_am335x_tscadc, rtsx_pcr
   - IRQ fixups in arizona, stmpe, max14577
   - Regulator related changes in axp20x
   - Pass DMA coherency information from parent => child in MFD core
   - Rename DT document files for consistency
   - Add ACPI support to the MFD core
   - Add Andreas Werner to MAINTAINERS for MEN F21BMC
 
 New drivers/supported devices:
   - New driver for MEN 14F021P00 Board Management Controller
   - New driver for Ricoh RN5T618 PMIC
   - New driver for Rockchip RK808
   - New driver for HiSilicon Hi6421 PMIC
   - New driver for Qualcomm SPMI PMICs
   - Add support for Intel Braswell in lpc_ich
   - Add support for Intel 9 Series PCH in lpc_ich
   - Add support for Intel Quark ILB in lpc_sch
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJUMvv5AAoJEFGvii+H/Hdhq90P/3a7ed9Gc4SatQNJ8u68e8M+
 lllGPWXVKnbCR8yc/kCALBpNYUcyPzTp5u1l/ozwEgRDgCzNAvYC2h/aflpPjWSu
 5q1rE7V8Cz/hUxXU/fcEMcnJYiqdaRowgdFtUM+ClLQReOkmwQhWID+hLvTlCUIN
 6MkXCsAl6vrzBEtbKtlR5+6VDQ3Q84gqN2SadpxS+yQwIfGrq1ZWYATaPhdSNGR9
 4bde6YwAqgttQDHyHw0dsd9VtJ53KVk13QkHIHW6S6uPOaZSIvtt4noDUtghDUA1
 tN7d5e5x1Rm8lPREQ4PxMKqHJoRxGfYyAosqXlt3XA1wbjgOgN35nev3gqrbfho5
 eHIWfFJgPDOOwTRVT1drTOVSoxecsbrQq1YB7ChdnfREQbpFiwKhBIxjQKEpQNrI
 OjxXp4ngXwiz31Hvq+44Z6MEVVRCTXgAuBf9/cd8GkF772H7nKmT+wH1QvF+6BRG
 52qEwugTiINo3O+5g1xuDFjFWZ5GWrwUQuRHss13A0cgo+EUJKM6caH+375T7jIT
 vH+2hg0XrqAlWPqcPd1Ma9TVKqI6RJdF0XOk7YP+PcPRvN+SoW/TAGFpzfDHCd+K
 dj3/10nJZUi4CKz6PRcTxKFFpgYjsEGwhYHRWLtH+MXg3UcCyoqTrvfpkGh+hq37
 H9rkW3cNzeyHSAaeKtnk
 =xxsZ
 -----END PGP SIGNATURE-----

Merge tag 'mfd-for-linus-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "Changes to existing drivers:
  - DT clean-ups in da9055-core, max14577, rn5t618, arizona, hi6421, stmpe, twl4030
  - Export symbols for use in modules in max14577
  - Plenty of static code analysis/Coccinelle fixes throughout the SS
  - Regmap clean-ups in arizona, wm5102, wm5110, da9052, tps65217, rk808
  - Remove unused/duplicate code in da9052, 88pm860x, ti_ssp, lpc_sch, arizona
  - Bug fixes in ti_am335x_tscadc, da9052, ti_am335x_tscadc, rtsx_pcr
  - IRQ fixups in arizona, stmpe, max14577
  - Regulator related changes in axp20x
  - Pass DMA coherency information from parent => child in MFD core
  - Rename DT document files for consistency
  - Add ACPI support to the MFD core
  - Add Andreas Werner to MAINTAINERS for MEN F21BMC

 New drivers/supported devices:
  - New driver for MEN 14F021P00 Board Management Controller
  - New driver for Ricoh RN5T618 PMIC
  - New driver for Rockchip RK808
  - New driver for HiSilicon Hi6421 PMIC
  - New driver for Qualcomm SPMI PMICs
  - Add support for Intel Braswell in lpc_ich
  - Add support for Intel 9 Series PCH in lpc_ich
  - Add support for Intel Quark ILB in lpc_sch"

[ Delayed to after the poweer/reset pull due to Kconfig problems with
  recursive Kconfig select/depends-on chains.   - Linus ]

* tag 'mfd-for-linus-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (79 commits)
  mfd: cros_ec: wait for completion of commands that return IN_PROGRESS
  i2c: i2c-cros-ec-tunnel: Set retries to 3
  mfd: cros_ec: move locking into cros_ec_cmd_xfer
  mfd: cros_ec: stop calling ->cmd_xfer() directly
  mfd: cros_ec: Delay for 50ms when we see EC_CMD_REBOOT_EC
  MAINTAINERS: Adds Andreas Werner to maintainers list for MEN F21BMC
  mfd: arizona: Correct mask to allow setting micbias external cap
  mfd: Add ACPI support
  Revert "mfd: wm5102: Manually apply register patch"
  mfd: ti_am335x_tscadc: Update logic in CTRL register for 5-wire TS
  mfd: dt-bindings: atmel-gpbr: Rename doc file to conform to naming convention
  mfd: dt-bindings: qcom-pm8xxx: Rename doc file to conform to naming convention
  mfd: Inherit coherent_dma_mask from parent device
  mfd: Document DT bindings for Qualcomm SPMI PMICs
  mfd: Add support for Qualcomm SPMI PMICs
  mfd: dt-bindings: pm8xxx: Add new compatible string
  mfd: axp209x: Drop the parent supplies field
  mfd: twl4030-power: Use 'ti,system-power-controller' as alternative way to support system power off
  mfd: dt-bindings: twl4030-power: Use the standard property to mark power control
  mfd: syscon: Add Atmel GPBR DT bindings documention
  ...
2014-10-15 06:58:16 +02:00
Linus Torvalds ea584595fc This is the bulk of GPIO changes for the v3.18 development
cycle:
 
 - Increase the default ARCH_NR_GPIO from 256 to 512. This
   was done to avoid having a custom <asm/gpio.h> header for
   the x86 architecture - GPIO is custom and complicated
   enough as it is already! We want to move to a radix to
   store the descriptors going forward, and finally get rid
   of this fixed array size altogether.
 
 - Endgame patching of the gpio_remove() semantics initiated
   by Abdoulaye Berthe. It is not accepted by the system that
   the removal of a GPIO chip fails during e.g. reboot or
   shutdown, and therefore the return value has now painfully
   been refactored away. For special cases like GPIO expanders
   on a hot-pluggable bus like USB, we may later add some
   gpiochip_try_remove() call, but for the cases we have now,
   return values are moot.
 
 - Some incremental refactoring of the gpiolib core and ACPI
   GPIO library for more descriptor usage.
 
 - Refactor the chained IRQ handler set-up method to handle
   also threaded, nested interrupts and set up the parent IRQ
   correctly. Switch STMPE and TC3589x drivers to use this
   registration method.
 
 - Add a .irq_not_threaded flag to the struct gpio_chip, so
   that also GPIO expanders that block but are still not
   using threaded IRQ handlers.
 
 - New drivers for the ARM64 X-Gene SoC GPIO controller.
 
 - The syscon GPIO driver has been improved to handle the
   "DSP GPIO" found on the TI Keystone 2 SoC:s.
 
 - ADNP driver switched to use gpiolib irqchip helpers.
 
 - Refactor the DWAPB driver to support being instantiated
   from and MFD cell (platform device).
 
 - Incremental feature improvement in the Zynq, MCP23S08,
   DWAPB, OMAP, Xilinx and Crystalcove drivers.
 
 - Various minor fixes.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJUNOr0AAoJEEEQszewGV1z9toP/2ISXRnsi3+jlqVmEGm/y6EA
 PPwJOiYnOhZR2/fTCHIF0PNbIi9pw7xKnzxttYCu4uCz7geHX+FfTwUZ2/KWMfqi
 ZJ9kEoOVVKzKjmL/m2a2tO4IRSBHqJ8dF3yvaNjS3AL7EDfG6F5STErQurdLEynK
 SeJZ2OwM/vRFCac6F7oDlqAUTu3xYGbVD8+zI0H0V/ReocosFlEwcbl2S8ctDWUd
 h98M+gY+A8rxkvVMnmQ/k7rUTme/glDQ3z5xVx+uHbS2/a5M1jSM/71cXE6YnSrR
 it0CK7CHomq2RzHsKf7oH7GD4kFkukMwFKeMoqz75JWz3352VZPTF53chCIqRSgO
 hrgGwZ7WF6pUUUhsn1ZdZsnBPA2Fou2uwslyLSAiE+OYEH2/NSVIOUcorjQcWqU/
 0Kix5yb8X1ZzRMhR+TVrTD5V0jguqp2buXq+0P2XlU6MoO2vy7iNf2eXvPg8sF8C
 anjTCKgmkzy7eyT2uzfDaNZAyfSBKb1TiKiR9zA0SRChJkCi1ErJEXDGeHiptvSA
 +D2k68Ils2LqsvdrnEd2XvVFMllh0iq7b+16o7D+Els0WRbnHpfYCaqfOuF5F4U0
 SmeyI0ruawNDc5e9EBKXstt0/R9AMOetyTcTu29U2ZVo90zGaT1ofT8+R1jJ0kGa
 bPARJZrgecgv1E9Qnnnd
 =8InA
 -----END PGP SIGNATURE-----

Merge tag 'gpio-v3.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO changes from Linus Walleij:
 "This is the bulk of GPIO changes for the v3.18 development cycle:

   - Increase the default ARCH_NR_GPIO from 256 to 512.  This was done
     to avoid having a custom <asm/gpio.h> header for the x86
     architecture - GPIO is custom and complicated enough as it is
     already! We want to move to a radix to store the descriptors going
     forward, and finally get rid of this fixed array size altogether.

   - Endgame patching of the gpio_remove() semantics initiated by
     Abdoulaye Berthe.  It is not accepted by the system that the
     removal of a GPIO chip fails during eg reboot or shutdown, and
     therefore the return value has now painfully been refactored away.
     For special cases like GPIO expanders on a hot-pluggable bus like
     USB, we may later add some gpiochip_try_remove() call, but for the
     cases we have now, return values are moot.

   - Some incremental refactoring of the gpiolib core and ACPI GPIO
     library for more descriptor usage.

   - Refactor the chained IRQ handler set-up method to handle also
     threaded, nested interrupts and set up the parent IRQ correctly.
     Switch STMPE and TC3589x drivers to use this registration method.

   - Add a .irq_not_threaded flag to the struct gpio_chip, so that also
     GPIO expanders that block but are still not using threaded IRQ
     handlers.

   - New drivers for the ARM64 X-Gene SoC GPIO controller.

   - The syscon GPIO driver has been improved to handle the "DSP GPIO"
     found on the TI Keystone 2 SoC:s.

   - ADNP driver switched to use gpiolib irqchip helpers.

   - Refactor the DWAPB driver to support being instantiated from and
     MFD cell (platform device).

   - Incremental feature improvement in the Zynq, MCP23S08, DWAPB, OMAP,
     Xilinx and Crystalcove drivers.

   - Various minor fixes"

* tag 'gpio-v3.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (52 commits)
  gpio: pch: Build context save/restore only for PM
  pinctrl: abx500: get rid of unused variable
  gpio: ks8695: fix 'else should follow close brace '}''
  gpio: stmpe: add verbose debug code
  gpio: stmpe: fix up interrupt enable logic
  gpio: staticize xway_stp_init()
  gpio: handle also nested irqchips in the chained handler set-up
  gpio: set parent irq on chained handlers
  gpiolib: irqchip: use irq_find_mapping while removing irqchip
  gpio: crystalcove: support virtual GPIO
  pinctrl: bcm281xx: make Kconfig dependency more strict
  gpio: kona: enable only on BCM_MOBILE or for compile testing
  gpio, bcm-kona, LLVMLinux: Remove use of __initconst
  gpio: Fix ngpio in gpio-xilinx driver
  gpio: dwapb: fix pointer to integer cast
  gpio: xgene: Remove unneeded #ifdef CONFIG_OF guard
  gpio: xgene: Remove unneeded forward declation for struct xgene_gpio
  gpio: xgene: Fix missing spin_lock_init()
  gpio: ks8695: fix switch case indentation
  gpiolib: add irq_not_threaded flag to gpio_chip
  ...
2014-10-09 14:58:15 -04:00
Lee Jones 9b6a5ad9da mfd: htc-i2cpld: Rectify pointer offset error
Checking the result of container_of() against NULL will always result to
false.  Using the offset of member 'chip_out' to find the start of 'struct
htcpld_chip' will result in an offset error when .get_chip() is attempting
to obtain 'htcpld-in'.  Instead, we'll use the correct member based on a
previously the set chip label.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-26 08:15:31 +01:00
Lee Jones 41cc08e955 mfd: htc-i2cpld: Use '!variable' instead of 'variable == NULL'
This aids in consistency, as the rest of the checks in the file use this
notation.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-26 08:15:30 +01:00
Lee Jones fe4b7ea8e7 mfd: htc-i2cpld: container_of() cannot return NULL
Logically dead code (DEADCODE)

dead_error_line: Execution cannot reach this statement: return;

Remove the check for NULL.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-26 08:15:29 +01:00
abdoulaye berthe 88d5e520aa driver:gpio remove all usage of gpio_remove retval in driver
this remove all reference to gpio_remove retval in all driver
except pinctrl and gpio. the same thing is done for gpio and
pinctrl in two different patches.

Signed-off-by: Abdoulaye Berthe <berthe.ab@gmail.com>
Acked-by: Michael Büsch <m@bues.ch>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-09-18 11:03:10 -07:00
Hans Wennborg 6065c9a472 mfd: htc-i2cpld: Fix %d confusingly prefixed with 0x in format string
Signed-off-by: Hans Wennborg <hans@hanshq.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-08-20 13:27:48 +01:00
Sachin Kamat 0a73b28f74 mfd: htc-i2cpld: Remove unused code
Removed code unused in this function.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-28 08:09:45 +01:00
Jingoo Han 334a41ce9b mfd: Use dev_get_platdata()
Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-07-31 13:01:29 +01:00
Lee Jones 2b0b5e2dfe mfd: htc-i2cpld: Convert to managed resources for allocating memory
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-13 12:11:43 +02:00
Bill Pemberton f791be492f mfd: remove use of __devinit
CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Daniel Walker <dwalker@fifo99.com>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Acked-by: David Brown <davidb@codeaurora.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28 12:20:19 -08:00
Thomas Gleixner d6f7ce9f7f mfd: Fold irq_set_chip/irq_set_handler
Use the combined irq_set_chip_and_handler() function
instead. Converted with coccinelle.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-03-27 00:09:52 +01:00
Thomas Gleixner d5bb122165 mfd: Cleanup irq namespace
Converted with coccinelle.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-03-27 00:09:51 +01:00
Thomas Gleixner 9eaee99e5a mfd: htc-i2cpld: Cleanup interrupt handling
Remove the pointless irq_desc check in set_type. This function is
called with that irq descriptor locked. Also remove the write back of
the flow type as the core code does this already when the return value
is 0.

Also store the flow type in the chip data structure, so there is no
need to fiddle in the irq descriptor.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-03-27 00:09:46 +01:00
Mark Brown e6a4c4a48a mfd: Convert HTC I2C CPLD driver to irq_ API
The genirq core is being converted to pass a struct irq_data to interrupt
operations rather than an IRQ number.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Cory Maccarrone <darkstar6262@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-01-14 12:37:55 +01:00
Mark Brown 8d2d3a3a32 mfd: Staticise internal functions in HTC I2CCPLD driver
Most of these are GPIO operations, though a couple are just internal only
functions.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Cory Maccarrone <darkstar6262@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-01-14 12:37:51 +01:00
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00
Cory Maccarrone 6048a3dd23 mfd: Add HTCPLD driver
This change introduces a driver for the HTC PLD chip found
on some smartphones, such as the HTC Wizard and HTC Herald.
It works through the I2C bus and acts as a GPIO extender.
Specifically:

 * it can have several sub-devices, each with its own I2C
   address
 * Each sub-device provides 8 output and 8 input pins
 * The chip attaches to one GPIO to signal when any of the
   input GPIOs change -- at which point all chips must be
   scanned for changes

This driver implements the GPIOs throught the kernel's
GPIO and IRQ framework.  This allows any GPIO-servicing
drivers to operate on htcpld pins, such as the gpio-keys
and gpio-leds drivers.

Signed-off-by: Cory Maccarrone <darkstar6262@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-03-07 22:17:09 +01:00