kernel/git/stable/linux.git/drivers/video/backlight, branch linux-3.11.y

backlight: atmel-pwm-bl: fix deferred probe from __init

2013-11-20T20:31:40+00:00

commit 9d3fde86b15303decea632c929fbf1f3ae4501f2 upstream. Move probe out of __init section and don't use platform_driver_probe which cannot be used with deferred probing. Since commit e9354576 ("gpiolib: Defer failed gpio requests by default") this driver might return -EPROBE_DEFER if a gpio_request fails. Cc: Richard Purdie Cc: Jingoo Han Cc: Jean-Christophe Plagniol-Villard Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman

mfd: max8925: fix dt code for backlight

2013-07-25T23:57:00+00:00

The device-tree enablement for max8925 has several problems, but besides the bindings being wrong (and not having seen review) there's also some bad coding practices on how to fill in the platform_data from device tree. I came across this since it causes a warning when compiling mmp2_defconfig, and instead of doing the minimal fix to silence the warning, I restructured the code a bit. This silences the warning: drivers/video/backlight/max8925_bl.c: In function 'max8925_backlight_probe': drivers/video/backlight/max8925_bl.c:177:3: warning: statement with no effect [-Wunused-value] Note that the bindings themselves need to be revisited too, but that will affect more than just the backlight driver and is best done separately; this just fixes the bad code for the backlight driver. Acked-by: Jingoo Han Signed-off-by: Olof Johansson

backlight: convert from legacy pm ops to dev_pm_ops

2013-07-03T23:07:43+00:00

Convert drivers/video/backlight/class to use dev_pm_ops for power management and remove Legacy PM ops hooks. With this change, backlight class registers suspend/resume callbacks via class->pm (dev_pm_ops) instead of Legacy class->suspend/resume. When __device_suspend() runs call-backs, it will find class->pm ops for the backlight class. [jg1.han@samsung.com: add CONFIG_PM_SLEEP to suspend/resume functions] Signed-off-by: Shuah Khan Signed-off-by: Jingoo Han Cc: Shuah Khan Cc: Jingoo Han Cc: Shuah Khan Cc: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

lcd: add devm_lcd_device_{register,unregister}()

2013-07-03T23:07:43+00:00

These functions allow the driver core to automatically clean up any allocation made by lcd drivers. Thus it simplifies the error paths. Signed-off-by: Jingoo Han Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

backlight: add devm_backlight_device_{register,unregister}()

2013-07-03T23:07:43+00:00

These functions allow the driver core to automatically clean up any allocation made by backlight drivers. Thus it simplifies the error paths. Signed-off-by: Jingoo Han Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

backlight: pcf50633: remove unnecessary platform_set_drvdata()

2013-07-03T23:07:43+00:00

The driver core clears the driver data to NULL after device_release or on probe failure, since commit 0998d063100 ("device-core: Ensure drvdata = NULL when no driver is bound"). Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

backlight: lp8788: remove unnecessary platform_set_drvdata()

2013-07-03T23:07:43+00:00

backlight: ep93xx: remove unnecessary platform_set_drvdata()

2013-07-03T23:07:42+00:00

backlight: atmel-pwm-bl: remove unnecessary platform_set_drvdata()

2013-07-03T23:07:42+00:00

The driver core clears the driver data to NULL after device_release or on probe failure, since commit 0998d06310 ("device-core: Ensure drvdata = NULL when no driver is bound"). Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

drivers: avoid format string in dev_set_name

2013-07-03T23:07:41+00:00

Calling dev_set_name with a single paramter causes it to be handled as a format string. Many callers are passing potentially dynamic string content, so use "%s" in those cases to avoid any potential accidents, including wrappers like device_create*() and bdi_register(). Signed-off-by: Kees Cook Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds