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 Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ 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 -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html