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rsxx: Fixes DLPAR add kernel panic if partition still mounted.

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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>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Philip J Kelleher 2013-06-18 14:46:04 -05:00 committed by Jens Axboe
parent f730e3dc6d
commit 66bc600363
1 changed files with 4 additions and 0 deletions
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4
drivers/block/rsxx/dev.c
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@ -171,6 +171,9 @@ static void rsxx_make_request(struct request_queue *q, struct bio *bio)
might_sleep(); might_sleep();
if (!card)
goto req_err;
if (unlikely(card->halt)) { if (unlikely(card->halt)) {
st = -EFAULT; st = -EFAULT;
goto req_err; goto req_err;
@ -331,6 +334,7 @@ void rsxx_destroy_dev(struct rsxx_cardinfo *card)
card->gendisk = NULL; card->gendisk = NULL;
blk_cleanup_queue(card->queue); blk_cleanup_queue(card->queue);
card->queue->queuedata = NULL;
unregister_blkdev(card->major, DRIVER_NAME); unregister_blkdev(card->major, DRIVER_NAME);
} }