As the alloc_ordered_workqueue may return NULL pointer,
it should be better to add check for the return
value.
Moreover, the msb->io_queue should be freed if error occurs later.
Fixes: 0ab30494bc4f ("memstick: add support for legacy memorysticks")
Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
---
Changelog:
v1 -> v2:
1. Assign error number to rc if alloc_ordered_workqueue fails.
2. Free msb->io_queue if error occurs later.
---
drivers/memstick/core/ms_block.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/memstick/core/ms_block.c b/drivers/memstick/core/ms_block.c
index ba8414519515..04115cd92433 100644
--- a/drivers/memstick/core/ms_block.c
+++ b/drivers/memstick/core/ms_block.c
@@ -2116,6 +2116,11 @@ static int msb_init_disk(struct memstick_dev *card)
dbg("Set total disk size to %lu sectors", capacity);
msb->io_queue = alloc_ordered_workqueue("ms_block", WQ_MEM_RECLAIM);
+ if (!msb->io_queue) {
+ rc = -ENOMEM;
+ goto out_cleanup_disk;
+ }
+
INIT_WORK(&msb->io_work, msb_io_work);
sg_init_table(msb->prealloc_sg, MS_BLOCK_MAX_SEGS+1);
@@ -2125,10 +2130,12 @@ static int msb_init_disk(struct memstick_dev *card)
msb_start(card);
rc = device_add_disk(&card->dev, msb->disk, NULL);
if (rc)
- goto out_cleanup_disk;
+ goto out_destroy_workqueue;
dbg("Disk added");
return 0;
+out_destroy_workqueue:
+ destroy_workqueue(msb->io_queue);
out_cleanup_disk:
put_disk(msb->disk);
out_free_tag_set:
--
2.25.1
