From 5a79e1ac21681907f8cc58e1f78fc40af5bbb890 Mon Sep 17 00:00:00 2001 From: Asai Thambi S P Date: Fri, 12 Apr 2013 23:57:17 +0530 Subject: mtip32xx: fix a smatch warning Reported smatch warning: drivers/block/mtip32xx/mtip32xx.c:4163 mtip_block_shutdown() warn: variable dereferenced before check 'dd->disk' (see line 4159) dd->disk->disk_name accessed before the check if dd->disk is NULL. Fixed this and access of dd->queue/dd->disk->queue. Reported-by: Dan Carpenter Signed-off-by: Asai Thambi S P Signed-off-by: Jens Axboe --- drivers/block/mtip32xx/mtip32xx.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index 11cc9522cdd..2d0d52f6ee2 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -4053,26 +4053,24 @@ static int mtip_block_remove(struct driver_data *dd) */ static int mtip_block_shutdown(struct driver_data *dd) { - dev_info(&dd->pdev->dev, - "Shutting down %s ...\n", dd->disk->disk_name); - /* Delete our gendisk structure, and cleanup the blk queue. */ if (dd->disk) { - if (dd->disk->queue) + dev_info(&dd->pdev->dev, + "Shutting down %s ...\n", dd->disk->disk_name); + + if (dd->disk->queue) { del_gendisk(dd->disk); - else + blk_cleanup_queue(dd->queue); + } else put_disk(dd->disk); + dd->disk = NULL; + dd->queue = NULL; } - spin_lock(&rssd_index_lock); ida_remove(&rssd_index_ida, dd->index); spin_unlock(&rssd_index_lock); - blk_cleanup_queue(dd->queue); - dd->disk = NULL; - dd->queue = NULL; - mtip_hw_shutdown(dd); return 0; } -- cgit v1.2.3-18-g5258