2004-09-24 03:48:07

by maximilian attems

[permalink] [raw]
Subject: [patch 01/21] video/bttv-driver: replace schedule_timeout() with msleep()







I would appreciate any comments from the janitor@sternweltens list. This is one (of
many) cases where I made a decision about replacing

set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(some_time);

with

msleep(jiffies_to_msecs(some_time));

msleep() is not exactly the same as the previous code, but I only did
this replacement where I thought long delays were *desired*. If this is
not the case here, then just disregard this patch.

Thanks,
Nish



Description: Replace schedule_timeout() with msleep() to guarantee the
task delays for the desired time.

Signed-off-by: Nishanth Aravamudan <[email protected]>
Signed-off-by: Maximilian Attems <[email protected]>

---

linux-2.6.9-rc2-bk7-max/drivers/media/video/bttv-driver.c | 3 +--
1 files changed, 1 insertion(+), 2 deletions(-)

diff -puN drivers/media/video/bttv-driver.c~msleep-drivers_media_video_bttv-driver drivers/media/video/bttv-driver.c
--- linux-2.6.9-rc2-bk7/drivers/media/video/bttv-driver.c~msleep-drivers_media_video_bttv-driver 2004-09-21 20:50:29.000000000 +0200
+++ linux-2.6.9-rc2-bk7-max/drivers/media/video/bttv-driver.c 2004-09-21 20:50:29.000000000 +0200
@@ -743,8 +743,7 @@ static void set_pll(struct bttv *btv)
for (i=0; i<10; i++) {
/* Let other people run while the PLL stabilizes */
vprintk(".");
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(HZ/50);
+ msleep(20);

if (btread(BT848_DSTATUS) & BT848_DSTATUS_PLOCK) {
btwrite(0,BT848_DSTATUS);
_