diff options
| author | Luis Chamberlain <mcgrof@kernel.org> | 2021-10-15 16:30:26 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-10-21 09:00:56 -0600 |
| commit | 66638f163a2b5c5b462ca38525129b14a20117eb (patch) | |
| tree | c33f67a75cc13559fb6e69be98d50f1b2048ebcc /arch/um | |
| parent | 21fd880d3da7564bab68979417cab7408e4f9642 (diff) | |
| download | linux-stable-66638f163a2b5c5b462ca38525129b14a20117eb.tar.gz linux-stable-66638f163a2b5c5b462ca38525129b14a20117eb.tar.bz2 linux-stable-66638f163a2b5c5b462ca38525129b14a20117eb.zip | |
um/drivers/ubd_kern: add error handling support for add_disk()
We never checked for errors on add_disk() as this function
returned void. Now that this is fixed, use the shiny new
error handling.
ubd_disk_register() never returned an error, so just fix
that now and let the caller handle the error condition.
Reviewed-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/20211015233028.2167651-8-mcgrof@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/drivers/ubd_kern.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c index fefd343412c7..69d2d0049a61 100644 --- a/arch/um/drivers/ubd_kern.c +++ b/arch/um/drivers/ubd_kern.c @@ -855,8 +855,8 @@ static const struct attribute_group *ubd_attr_groups[] = { NULL, }; -static void ubd_disk_register(int major, u64 size, int unit, - struct gendisk *disk) +static int ubd_disk_register(int major, u64 size, int unit, + struct gendisk *disk) { disk->major = major; disk->first_minor = unit << UBD_SHIFT; @@ -873,7 +873,7 @@ static void ubd_disk_register(int major, u64 size, int unit, disk->private_data = &ubd_devs[unit]; disk->queue = ubd_devs[unit].queue; - device_add_disk(&ubd_devs[unit].pdev.dev, disk, ubd_attr_groups); + return device_add_disk(&ubd_devs[unit].pdev.dev, disk, ubd_attr_groups); } #define ROUND_BLOCK(n) ((n + (SECTOR_SIZE - 1)) & (-SECTOR_SIZE)) @@ -920,10 +920,15 @@ static int ubd_add(int n, char **error_out) blk_queue_write_cache(ubd_dev->queue, true, false); blk_queue_max_segments(ubd_dev->queue, MAX_SG); blk_queue_segment_boundary(ubd_dev->queue, PAGE_SIZE - 1); - ubd_disk_register(UBD_MAJOR, ubd_dev->size, n, disk); + err = ubd_disk_register(UBD_MAJOR, ubd_dev->size, n, disk); + if (err) + goto out_cleanup_disk; + ubd_gendisk[n] = disk; return 0; +out_cleanup_disk: + blk_cleanup_disk(disk); out_cleanup_tags: blk_mq_free_tag_set(&ubd_dev->tag_set); out: |