From: Domen Puncer <domen@coderock.org>
Date: Sat, 25 Jun 2005 21:58:41 +0000 (-0700)
Subject: [PATCH] char/ds1620: use msleep() instead of schedule_timeout()
X-Git-Tag: v2.6.13-rc1~68^2~72
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=d8eddb620499dc638aeb4d5d3751974ca697ab39;p=linux-2.6-omap-h63xx.git

[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>
---

diff --git a/drivers/char/ds1620.c b/drivers/char/ds1620.c
index 7def6ad5179..62cda25724e 100644
--- a/drivers/char/ds1620.c
+++ b/drivers/char/ds1620.c
@@ -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)