The patch titled
Subject: backlight: ld9040: use sleep instead of delay
has been added to the -mm tree. Its filename is
backlight-ld9040-use-sleep-instead-of-delay.patch
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------------------------------------------------------
From: Jingoo Han <jg1.han@xxxxxxxxxxx>
Subject: backlight: ld9040: use sleep instead of delay
Replace mdelay with msleep to remove the busy loop waiting.
Signed-off-by: Jingoo Han <jg1.han@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/video/backlight/ld9040.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff -puN drivers/video/backlight/ld9040.c~backlight-ld9040-use-sleep-instead-of-delay drivers/video/backlight/ld9040.c
--- a/drivers/video/backlight/ld9040.c~backlight-ld9040-use-sleep-instead-of-delay
+++ a/drivers/video/backlight/ld9040.c
@@ -78,7 +78,7 @@ static void ld9040_regulator_enable(stru
lcd->enabled = true;
}
- mdelay(pd->power_on_delay);
+ msleep(pd->power_on_delay);
out:
mutex_unlock(&lcd->lock);
}
@@ -474,8 +474,9 @@ static int ld9040_panel_send_sequence(st
ret = ld9040_spi_write(lcd, wbuf[i], wbuf[i+1]);
if (ret)
break;
- } else
- udelay(wbuf[i+1]*1000);
+ } else {
+ msleep(wbuf[i+1]);
+ }
i += 2;
}
@@ -539,7 +540,7 @@ static int ld9040_ldi_init(struct ld9040
for (i = 0; i < ARRAY_SIZE(init_seq); i++) {
ret = ld9040_panel_send_sequence(lcd, init_seq[i]);
/* workaround: minimum delay time for transferring CMD */
- udelay(300);
+ usleep_range(300, 310);
if (ret)
break;
}
@@ -584,7 +585,7 @@ static int ld9040_power_on(struct ld9040
return -EFAULT;
} else {
pd->reset(lcd->ld);
- mdelay(pd->reset_delay);
+ msleep(pd->reset_delay);
}
ret = ld9040_ldi_init(lcd);
@@ -619,7 +620,7 @@ static int ld9040_power_off(struct ld904
return -EIO;
}
- mdelay(pd->power_off_delay);
+ msleep(pd->power_off_delay);
/* lcd power off */
ld9040_regulator_disable(lcd);
_
Patches currently in -mm which might be from jg1.han@xxxxxxxxxxx are
origin.patch
backlight-add-lms501kf03-lcd-driver.patch
backlight-add-lms501kf03-lcd-driver-fix.patch
backlight-ld9040-use-sleep-instead-of-delay.patch
backlight-ld9040-remove-unnecessary-null-deference-check.patch
backlight-ld9040-replace-efault-with-einval.patch
backlight-ld9040-remove-redundant-return-variables.patch
backlight-ld9040-reorder-inclusions-of-linux-xxxh.patch
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