linux-kernel - [PATCH 07/20] cciss: Handle failure of blk_init_queue gracefully in cciss_add

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Date:	Thu, 17 Sep 2009 13:47:24 -0500
From:	"Stephen M. Cameron" <scameron@...rdog.cce.hp.com>
To:	akpm@...ux-foundation.org, axboe@...nel.dk
Cc:	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
	andrew.patterson@...com, mikem@...rdog.cce.hp.com,
	scameron@...rdog.cce.hp.com
Subject: [PATCH 07/20] cciss: Handle failure of blk_init_queue gracefully in
	cciss_add_disk.

Handle failure of blk_init_queue gracefully in cciss_add_disk.

Signed-off-by: Stephen M. Cameron <scameron@...rdog.cce.hp.com>
---

 drivers/block/cciss.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 557b958..60fe3c6 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -1689,6 +1689,8 @@ static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk,
 				int drv_index)
 {
 	disk->queue = blk_init_queue(do_cciss_request, &h->lock);
+	if (!disk->queue)
+		goto init_queue_failure;
 	sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index);
 	disk->major = h->major;
 	disk->first_minor = drv_index << NWD_SHIFT;
@@ -1729,6 +1731,7 @@ static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk,
 cleanup_queue:
 	blk_cleanup_queue(disk->queue);
 	disk->queue = NULL;
+init_queue_failure:
 	return -1;
 }
 

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