From a08e1a376b0a31e0a978494deffed409fad9c531 Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Thu, 4 Oct 2012 17:12:44 -0700 Subject: [PATCH] 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 Cc: Haavard Skinnemoen Cc: Richard Purdie Cc: Sachin Kamat Cc: Mark Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/video/backlight/ltv350qv.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/video/backlight/ltv350qv.c b/drivers/video/backlight/ltv350qv.c index 6c0f1ac0d32a..4066a5bbd826 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); -- 2.34.1