drivers/video/backlight/ltv350qv.c: use usleep_range() instead of msleep() for small sleeps
Since msleep() might not sleep for the desired amount when less than 20ms, use usleep_range(). Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Sachin Kamat <sachin.kamat@linaro.org> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
5333e254ab
commit
a08e1a376b
|
@ -75,7 +75,7 @@ static int ltv350qv_power_on(struct ltv350qv *lcd)
|
|||
/* Power On Reset Display off State */
|
||||
if (ltv350qv_write_reg(lcd, LTV_PWRCTL1, 0x0000))
|
||||
goto err;
|
||||
msleep(15);
|
||||
usleep_range(15000, 16000);
|
||||
|
||||
/* Power Setting Function 1 */
|
||||
if (ltv350qv_write_reg(lcd, LTV_PWRCTL1, LTV_VCOM_DISABLE))
|
||||
|
@ -153,7 +153,7 @@ err_settings:
|
|||
err_power2:
|
||||
err_power1:
|
||||
ltv350qv_write_reg(lcd, LTV_PWRCTL2, 0x0000);
|
||||
msleep(1);
|
||||
usleep_range(1000, 1100);
|
||||
err:
|
||||
ltv350qv_write_reg(lcd, LTV_PWRCTL1, LTV_VCOM_DISABLE);
|
||||
return -EIO;
|
||||
|
@ -175,7 +175,7 @@ static int ltv350qv_power_off(struct ltv350qv *lcd)
|
|||
ret |= ltv350qv_write_reg(lcd, LTV_PWRCTL2, 0x0000);
|
||||
|
||||
/* Wait at least 1 ms */
|
||||
msleep(1);
|
||||
usleep_range(1000, 1100);
|
||||
|
||||
/* Power down setting 2 */
|
||||
ret |= ltv350qv_write_reg(lcd, LTV_PWRCTL1, LTV_VCOM_DISABLE);
|
||||
|
|
Loading…
Reference in a new issue