Commit Graph

10 Commits

Author SHA1 Message Date
Uwe Kleine-König
541ec23c60 backlight: sky81452-backlight: Convert to platform remove callback returning void
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230308073945.2336302-14-u.kleine-koenig@pengutronix.de
2023-03-16 15:08:37 +00:00
Randy Dunlap
3a396f9859 backlight: sky81452: Fix sky81452_bl_platform_data kernel-doc
Correct the struct name and add a short struct description to fix the
kernel-doc notation.

Prevents this kernel-doc warning:
drivers/video/backlight/sky81452-backlight.c:64: warning: expecting prototype for struct sky81452_platform_data. Prototype was for struct sky81452_bl_platform_data instead

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230113064118.30169-1-rdunlap@infradead.org
2023-02-22 10:55:26 +00:00
Zheng Yongjun
4a98e5ef88 backlight: sky81452-backlight: Convert comma to semicolon
Replace a comma between expression statements by a semicolon.

Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-01-20 12:54:14 +00:00
dinghao.liu@zju.edu.cn
b7a4f80bc3 backlight: sky81452-backlight: Fix refcount imbalance on error
When of_property_read_u32_array() returns an error code, a
pairing refcount decrement is needed to keep np's refcount
balanced.

Fixes: f705806c9f ("backlight: Add support Skyworks SKY81452 backlight driver")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-08-28 10:25:54 +01:00
Lee Jones
c847e429db video: backlight: sky81452-backlight: Fix some kerneldoc issues
Firstly, all lines must begin with a '*'.  Secondly, arg descriptions
must be spelt correctly, so fix misspelling of 'gpioD_enable' and
'short_detecTion_threshold'

Fixes the following W=1 kernel build warning(s):

 drivers/video/backlight/sky81452-backlight.c:46: warning: bad line:                 If it is not defined, default name is lcd-backlight.
 drivers/video/backlight/sky81452-backlight.c:64: warning: Function parameter or member 'gpiod_enable' not described in 'sky81452_bl_platform_data'
 drivers/video/backlight/sky81452-backlight.c:64: warning: Function parameter or member 'short_detection_threshold' not described in 'sky81452_bl_platform_data'

Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-07-08 14:08:26 +01:00
Linus Walleij
08bf73a6f0 backlight: sky81452: Privatize platform data
The only way the platform data for the SKY81452 ever gets populated
is through the device tree.

The MFD device is bothered with this for no reason at all. Just
allocate the platform data in the driver and be happy.

Cc: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-07-01 10:40:11 +01:00
Linus Walleij
e1915eec54 backlight: sky81452: Convert to GPIO descriptors
The SKY81452 backlight driver just obtains a GPIO (named "gpios"
in the device tree) drives it high and leaves it high until the
driver is removed.

Switch to use GPIO descriptors for this, simple and
straight-forward.

Cc: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-07-01 10:39:32 +01:00
Thomas Gleixner
caab277b1d treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation this program is
  distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details you should have received a copy of the gnu general
  public license along with this program if not see http www gnu org
  licenses

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 503 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Enrico Weigelt <info@metux.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190602204653.811534538@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:07 +02:00
Axel Lin
047ffbb271 backlight: sky81452: Remove unneeded use of IS_ERR_VALUE() macro
IS_ERR_VALUE() makes sense only *if* there could be valid values in
negative error range.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-08-25 08:43:21 +01:00
Gyungoh Yoo
f705806c9f backlight: Add support Skyworks SKY81452 backlight driver
Signed-off-by: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Bryan Wu <cooloney@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-03-12 09:08:19 +00:00