libnvdimm: use devm_add_action_or_reset()
Clean up needless calls to the action routine by letting
devm_add_action_or_reset() call it automatically. This does cause the
disk to registered and immediately unregistered when a memory allocation
fails, but the block layer should be prepared for such an event.
Reported-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/nvdimm/blk.c b/drivers/nvdimm/blk.c
index 495e06d9..dfe691c 100644
--- a/drivers/nvdimm/blk.c
+++ b/drivers/nvdimm/blk.c
@@ -267,10 +267,8 @@
q = blk_alloc_queue(GFP_KERNEL);
if (!q)
return -ENOMEM;
- if (devm_add_action(dev, nd_blk_release_queue, q)) {
- blk_cleanup_queue(q);
+ if (devm_add_action_or_reset(dev, nd_blk_release_queue, q))
return -ENOMEM;
- }
blk_queue_make_request(q, nd_blk_make_request);
blk_queue_max_hw_sectors(q, UINT_MAX);
@@ -282,10 +280,6 @@
disk = alloc_disk(0);
if (!disk)
return -ENOMEM;
- if (devm_add_action(dev, nd_blk_release_disk, disk)) {
- put_disk(disk);
- return -ENOMEM;
- }
disk->driverfs_dev = dev;
disk->first_minor = 0;
@@ -296,6 +290,9 @@
set_capacity(disk, 0);
add_disk(disk);
+ if (devm_add_action_or_reset(dev, nd_blk_release_disk, disk))
+ return -ENOMEM;
+
if (nsblk_meta_size(nsblk)) {
int rc = nd_integrity_init(disk, nsblk_meta_size(nsblk));