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| author | Dan Williams <dan.j.williams@intel.com> | 2016-06-15 14:59:17 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2016-06-15 14:59:17 -0700 |
| commit | f02716db951c5e01acf48df9fe815007674fecff (patch) | |
| tree | 011a5c22e8ff2c8fa10379c1a7ec84e1f54aae3e /drivers/nvdimm/pmem.c | |
| parent | 5edb56491d4812c42175980759da53388e5d86f5 (diff) | |
| download | lwn-f02716db951c5e01acf48df9fe815007674fecff.tar.gz lwn-f02716db951c5e01acf48df9fe815007674fecff.zip | |
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>
Diffstat (limited to 'drivers/nvdimm/pmem.c')
| -rw-r--r-- | drivers/nvdimm/pmem.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index 608fc4464574..ba253df6233f 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -195,7 +195,7 @@ static void pmem_release_queue(void *q) blk_cleanup_queue(q); } -void pmem_release_disk(void *disk) +static void pmem_release_disk(void *disk) { del_gendisk(disk); put_disk(disk); @@ -269,10 +269,8 @@ static int pmem_attach_disk(struct device *dev, * At release time the queue must be dead before * devm_memremap_pages is unwound */ - if (devm_add_action(dev, pmem_release_queue, q)) { - blk_cleanup_queue(q); + if (devm_add_action_or_reset(dev, pmem_release_queue, q)) return -ENOMEM; - } if (IS_ERR(addr)) return PTR_ERR(addr); @@ -288,10 +286,6 @@ static int pmem_attach_disk(struct device *dev, disk = alloc_disk_node(0, nid); if (!disk) return -ENOMEM; - if (devm_add_action(dev, pmem_release_disk, disk)) { - put_disk(disk); - return -ENOMEM; - } disk->fops = &pmem_fops; disk->queue = q; @@ -305,6 +299,10 @@ static int pmem_attach_disk(struct device *dev, nvdimm_badblocks_populate(to_nd_region(dev->parent), &pmem->bb, res); disk->bb = &pmem->bb; add_disk(disk); + + if (devm_add_action_or_reset(dev, pmem_release_disk, disk)) + return -ENOMEM; + revalidate_disk(disk); return 0; |