lkml.org 
[lkml]   [2013]   [Jun]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH 7/11] rsxx: Fixes DLPAR add kernel panic if partition still mounted.
From: Philip J Kelleher <pjk1939@linux.vnet.ibm.com>

A kernel panic would occur on a DLPAR add if there was a partition
still mounted during the DLPAR remove. This bug fix will allow the
user to unmount the partition and bring the driver back into a
good state after the DLPAR add.

Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com>
-------------------------------------------------------------------------------



diff -uprN -X linux-block-vanilla/Documentation/dontdiff linux-block-vanilla/drivers/block/rsxx/dev.c linux-block/drivers/block/rsxx/dev.c
--- linux-block-vanilla/drivers/block/rsxx/dev.c 2013-06-18 09:27:54.997977479 -0500
+++ linux-block/drivers/block/rsxx/dev.c 2013-06-18 09:38:35.997839384 -0500
@@ -171,6 +171,9 @@ static void rsxx_make_request(struct req

might_sleep();

+ if (!card)
+ goto req_err;
+
if (unlikely(card->halt)) {
st = -EFAULT;
goto req_err;
@@ -331,6 +334,7 @@ void rsxx_destroy_dev(struct rsxx_cardin
card->gendisk = NULL;

blk_cleanup_queue(card->queue);
+ card->queue->queuedata = NULL;
unregister_blkdev(card->major, DRIVER_NAME);
}



\
 
 \ /
  Last update: 2013-06-18 22:21    [W:0.032 / U:0.388 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site