From: Luis Chamberlain <mcgrof@kernel.org>
Date: Fri, 15 Oct 2021 16:52:14 -0700
Subject: [PATCH] zram: add error handling support for add_disk()
Git-commit: 5e2e1cc4131cf4d21629c94331f2351b7dc8b87c
Patch-mainline: v5.16-rc1
References: jsc#PED-1183
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>
Acked-by: Minchan Kim <minchan@kernel.org>
Link: https://lore.kernel.org/r/20211015235219.2191207-9-mcgrof@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Hannes Reinecke <hare@suse.com>
---
drivers/block/zram/zram_drv.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index a68297fb51a2..876bf191e2ca 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1949,7 +1949,9 @@ static int zram_add(void)
blk_queue_max_write_zeroes_sectors(zram->disk->queue, UINT_MAX);
blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, zram->disk->queue);
- device_add_disk(NULL, zram->disk, zram_disk_attr_groups);
+ ret = device_add_disk(NULL, zram->disk, zram_disk_attr_groups);
+ if (ret)
+ goto out_cleanup_disk;
strlcpy(zram->compressor, default_compressor, sizeof(zram->compressor));
@@ -1957,6 +1959,8 @@ static int zram_add(void)
pr_info("Added device: %s\n", zram->disk->disk_name);
return device_id;
+out_cleanup_disk:
+ blk_cleanup_disk(zram->disk);
out_free_idr:
idr_remove(&zram_index_idr, device_id);
out_free_dev:
--
2.35.3