Linus Walleij 063c3d980d backlight: ktd253: Stabilize backlight ... [ Upstream commit daa37361518bf2d1f591bbdaa7c68b2a43d7af48 ] Remove interrupt disablement during backlight setting. It is way to dangerous and makes platforms instable by having it miss vblank IRQs leading to the graphics derailing. The code is using ndelay() which is not available on platforms such as ARM and will result in 32 * udelay(1) which is substantial. Add some code to detect if an interrupt occurs during the tight loop and in that case just redo it from the top. Fixes: 5317f37e48 ("backlight: Add Kinetic KTD253 backlight driver") Cc: Stephan Gerhold <stephan@gerhold.net> Reported-by: newbyte@disroot.org Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-09-22 12:28:02 +02:00
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88pm860x_bl.c	backlight: Use backlight_get_brightness() throughout	2020-07-20 10:27:06 +01:00
aat2870_bl.c
adp5520_bl.c	backlight: Use backlight_get_brightness() throughout	2020-07-20 10:27:06 +01:00
adp8860_bl.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
adp8870_bl.c	backlight: Use backlight_get_brightness() throughout	2020-07-20 10:27:06 +01:00
ams369fg06.c	backlight: ams369fg06: Drop GPIO include	2019-12-16 10:30:41 +00:00
apple_bl.c
arcxcnn_bl.c
as3711_bl.c	backlight: as3711_bl: Simplify update_status	2020-07-20 10:27:03 +01:00
backlight.c	backlight: backlight: Make of_find_backlight static	2020-07-20 10:27:11 +01:00
bd6107.c	backlight: Use backlight_get_brightness() throughout	2020-07-20 10:27:06 +01:00
corgi_lcd.c	backlight: Use backlight_get_brightness() throughout	2020-07-20 10:27:06 +01:00
cr_bllcd.c	video: backlight: cr_bllcd: Remove unused variable 'intensity'	2020-07-21 15:45:45 +01:00
da903x_bl.c	backlight: Use backlight_get_brightness() throughout	2020-07-20 10:27:06 +01:00
da9052_bl.c
ep93xx_bl.c	backlight: Use backlight_get_brightness() throughout	2020-07-20 10:27:06 +01:00
gpio_backlight.c	backlight: gpio_backlight: Simplify update_status()	2020-07-20 10:27:05 +01:00
hp680_bl.c	backlight: Use backlight_get_brightness() throughout	2020-07-20 10:27:06 +01:00
hx8357.c
ili922x.c	backlight: ili922x: Add missing kerneldoc description for ili922x_reg_dump()'s arg	2020-07-06 08:11:42 +01:00
ili9320.c
ili9320.h
ipaq_micro_bl.c
jornada720_bl.c	backlight: jornada720_bl: Introduce backlight_is_blank()	2020-07-20 10:27:05 +01:00
jornada720_lcd.c
kb3886_bl.c	backlight: Use backlight_get_brightness() throughout	2020-07-20 10:27:06 +01:00
Kconfig	backlight: Add Kinetic KTD253 backlight driver	2020-08-28 11:48:04 +01:00
ktd253-backlight.c	backlight: ktd253: Stabilize backlight	2021-09-22 12:28:02 +02:00
l4f00242t03.c	backlight: l4f00242t03: Convert to GPIO descriptors	2020-04-29 08:52:15 +01:00
lcd.c	backlight: lcd: Add missing kerneldoc entry for 'struct device parent'	2020-07-06 08:11:41 +01:00
led_bl.c	backlight: Use backlight_get_brightness() throughout	2020-07-20 10:27:06 +01:00
lm3533_bl.c	backlight: Use backlight_get_brightness() throughout	2020-07-20 10:27:06 +01:00
lm3630a_bl.c	backlight: lm3630a: Fix return code of .update_status() callback	2021-07-20 16:05:45 +02:00
lm3639_bl.c
lms283gf05.c
lms501kf03.c	backlight: lms501kf03: Remove unused const variables	2020-07-06 08:11:41 +01:00
locomolcd.c	backlight: Use backlight_get_brightness() throughout	2020-07-20 10:27:06 +01:00
lp855x_bl.c	backlight: lp855x: Ensure regulators are disabled on probe failure	2020-04-28 08:09:36 +01:00
lp8788_bl.c
ltv350qv.c
ltv350qv.h
lv5207lp.c	backlight: Use backlight_get_brightness() throughout	2020-07-20 10:27:06 +01:00
Makefile	backlight: Add Kinetic KTD253 backlight driver	2020-08-28 11:48:04 +01:00
max8925_bl.c	backlight: Use backlight_get_brightness() throughout	2020-07-20 10:27:06 +01:00
omap1_bl.c
otm3225a.c
pandora_bl.c
pcf50633-backlight.c
platform_lcd.c
pwm_bl.c	backlight: pwm_bl: Improve bootloader/kernel device handover	2021-09-15 09:50:48 +02:00
qcom-wled.c	backlight: qcom-wled: Fix FSC update issue for WLED5	2021-05-11 14:47:25 +02:00
rave-sp-backlight.c
sky81452-backlight.c	backlight: sky81452-backlight: Fix refcount imbalance on error	2020-08-28 10:25:54 +01:00
tdo24m.c
tosa_bl.c	backlight: tosa_bl: Include the right header	2020-09-08 12:31:19 +01:00
tosa_bl.h	video: backlight: tosa: Use GPIO lookup table	2019-11-11 09:29:56 +00:00
tosa_lcd.c	backlight: tosa_lcd: Include the right header	2020-09-08 12:30:02 +01:00
tps65217_bl.c	backlight: Use backlight_get_brightness() throughout	2020-07-20 10:27:06 +01:00
vgg2432a4.c
wm831x_bl.c	backlight: Use backlight_get_brightness() throughout	2020-07-20 10:27:06 +01:00