Messages in this thread Patch in this message | | | From | Jingoo Han <> | Subject | [PATCH 2/3] backlight: ltv350qv: Use usleep_range() instead of msleep() for small sleeps | Date | Mon, 06 Aug 2012 13:44:44 +0900 |
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Since msleep might not sleep for the desired amount when less than 20ms, use usleep_range.
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Jingoo Han <jg1.han@samsung.com> --- drivers/video/backlight/ltv350qv.c | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/video/backlight/ltv350qv.c b/drivers/video/backlight/ltv350qv.c index 6c0f1ac..4066a5b 100644 --- a/drivers/video/backlight/ltv350qv.c +++ b/drivers/video/backlight/ltv350qv.c @@ -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); -- 1.7.1
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