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Mon, 23 Aug 2021 17:20:15 -0400 X-MC-Unique: feQKhMxoPiqGV0YIG33R1g-1 Received: from mcgrof by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1mIGZa-000Zja-EG; Mon, 23 Aug 2021 20:29:34 +0000 From: Luis Chamberlain To: axboe@kernel.dk, martin.petersen@oracle.com, jejb@linux.ibm.com, kbusch@kernel.org, sagi@grimberg.me, adrian.hunter@intel.com, beanhuo@micron.com, ulf.hansson@linaro.org, avri.altman@wdc.com, swboyd@chromium.org, agk@redhat.com, snitzer@redhat.com, josef@toxicpanda.com Date: Mon, 23 Aug 2021 13:29:29 -0700 Message-Id: <20210823202930.137278-10-mcgrof@kernel.org> In-Reply-To: <20210823202930.137278-1-mcgrof@kernel.org> References: <20210823202930.137278-1-mcgrof@kernel.org> MIME-Version: 1.0 X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-loop: dm-devel@redhat.com X-Mailman-Approved-At: Mon, 23 Aug 2021 17:45:12 -0400 Cc: linux-block@vger.kernel.org, bvanassche@acm.org, linux-scsi@vger.kernel.org, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, ming.lei@redhat.com, hch@infradead.org, dm-devel@redhat.com, nbd@other.debian.org, Christoph Hellwig , Luis Chamberlain Subject: [dm-devel] [PATCH 09/10] loop: add error handling support for add_disk() X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dm-devel-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com We never checked for errors on add_disk() as this function returned void. Now that this is fixed, use the shiny new error handling. Signed-off-by: Luis Chamberlain Signed-off-by: Christoph Hellwig Reviewed-by: Christoph Hellwig --- drivers/block/loop.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/block/loop.c b/drivers/block/loop.c index fa1c298a8cfb..b8b9e2349e77 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -2393,10 +2393,17 @@ static int loop_add(int i) disk->events = DISK_EVENT_MEDIA_CHANGE; disk->event_flags = DISK_EVENT_FLAG_UEVENT; sprintf(disk->disk_name, "loop%d", i); - add_disk(disk); + + err = add_disk(disk); + if (err) + goto out_cleanup_disk; + mutex_unlock(&loop_ctl_mutex); + return i; +out_cleanup_disk: + blk_cleanup_disk(disk); out_cleanup_tags: blk_mq_free_tag_set(&lo->tag_set); out_free_idr: