lkml.org 
[lkml]   [2005]   [Jun]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[patch 04/12] block/xd: replace schedule_timeout() with msleep()
From: Nishanth Aravamudan <nacc@us.ibm.com>



Use msleep() instead of schedule_timeout() to guarantee the task
delays as expected. The current code wishes to sleep for 1 jiffy, but I am not
sure if this is actually intended, as with the change to HZ=1000, the time
equivalent of 1 jiffy changed from 10ms to 1ms. I have assumed the former in
this case; however the patch can be easily changed to assume the latter.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Domen Puncer <domen@coderock.org>
---
xd.c | 7 +++----
1 files changed, 3 insertions(+), 4 deletions(-)

Index: quilt/drivers/block/xd.c
===================================================================
--- quilt.orig/drivers/block/xd.c
+++ quilt/drivers/block/xd.c
@@ -47,6 +47,7 @@
#include <linux/wait.h>
#include <linux/blkdev.h>
#include <linux/blkpg.h>
+#include <linux/delay.h>

#include <asm/system.h>
#include <asm/io.h>
@@ -529,10 +530,8 @@ static inline u_char xd_waitport (u_shor
int success;

xdc_busy = 1;
- while ((success = ((inb(port) & mask) != flags)) && time_before(jiffies, expiry)) {
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
- }
+ while ((success = ((inb(port) & mask) != flags)) && time_before(jiffies, expiry))
+ msleep(10);
xdc_busy = 0;
return (success);
}
--
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-06-21 08:29    [W:1.829 / U:1.852 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site