[PATCH 01/10] block/brd: add error handling support for add_disk()
From: Luis Chamberlain <mcgrof@kernel.org>
Date: 2021-08-27 19:18:43
Also in:
linux-bcache, linux-nvme, lkml, nvdimm, xen-devel
Subsystem:
block layer, ramdisk ram block device driver, the rest · Maintainers:
Jens Axboe, Linus Torvalds
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 <mcgrof@kernel.org> --- drivers/block/brd.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index 58ec167aa018..c2bf4946f4e3 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c@@ -372,6 +372,7 @@ static int brd_alloc(int i) struct brd_device *brd; struct gendisk *disk; char buf[DISK_NAME_LEN]; + int err = -ENOMEM; brd = kzalloc(sizeof(*brd), GFP_KERNEL); if (!brd)
@@ -410,14 +411,19 @@ static int brd_alloc(int i) /* Tell the block layer that this is not a rotational device */ blk_queue_flag_set(QUEUE_FLAG_NONROT, disk->queue); blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, disk->queue); - add_disk(disk); + err = add_disk(disk); + if (err) + goto out_cleanup_disk; + list_add_tail(&brd->brd_list, &brd_devices); return 0; +out_cleanup_disk: + blk_cleanup_disk(disk); out_free_dev: kfree(brd); - return -ENOMEM; + return err; } static void brd_probe(dev_t dev)
--
2.30.2