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[PATCH] char/ds1620: use msleep() instead of schedule_timeout() 

Not sure why any driver needs to sleep for *two* ticks, so let's fix it.

Use msleep() instead of schedule_timeout() to guarantee the task delays as
expected.  Signals are never checked for by the callers or in the function
itself, so use TASK_UNINTERRUPTIBLE instead of TASK_INTERRUPTIBLE.  The
delay is presumed to have been written when HZ==100, and thus has been
multiplied by 10 to pass to msleep().

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Domen Puncer <domen@coderock.org>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Domen Puncer 2005-06-25 14:58:41 -07:00 committed by Linus Torvalds
parent d2a457cf26
commit d8eddb6204
1 changed files with 1 additions and 2 deletions
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3
drivers/char/ds1620.c
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@ -163,8 +163,7 @@ static void ds1620_out(int cmd, int bits, int value)
netwinder_ds1620_reset();
netwinder_unlock(&flags);
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(2);
msleep(20);
}
static unsigned int ds1620_in(int cmd, int bits)