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| author | Sajjan, Vikas C <vikas.cha.sajjan@hpe.com> | 2016-07-05 11:20:07 +0530 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2016-07-06 15:14:48 -0700 |
| commit | d1c8e0c521c111f387a17096a17e49af5dea4aa9 (patch) | |
| tree | 7d3f5797f39d45a2bbe7ca33fc4e8d444717787a /drivers/dax | |
| parent | d932dd2ccda0d890d318428466794540e081b9c0 (diff) | |
| download | op-kernel-dev-d1c8e0c521c111f387a17096a17e49af5dea4aa9.zip op-kernel-dev-d1c8e0c521c111f387a17096a17e49af5dea4aa9.tar.gz | |
dax: use devm_add_action_or_reset()
If devm_add_action() fails, we are explicitly calling the cleanup to free
the resources allocated. Use the helper devm_add_action_or_reset()
and return directly in case of error, since the cleanup function
has been already called by the helper if there was any error.
Reported-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Vikas C Sajjan <vikas.cha.sajjan@hpe.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dax')
| -rw-r--r-- | drivers/dax/dax.c | 6 | ||||
| -rw-r--r-- | drivers/dax/pmem.c | 14 |
2 files changed, 8 insertions, 12 deletions
diff --git a/drivers/dax/dax.c b/drivers/dax/dax.c index b891a12..803f395 100644 --- a/drivers/dax/dax.c +++ b/drivers/dax/dax.c @@ -211,11 +211,9 @@ int devm_create_dax_dev(struct dax_region *dax_region, struct resource *res, } dax_dev->dev = dev; - rc = devm_add_action(dax_region->dev, unregister_dax_dev, dev); - if (rc) { - unregister_dax_dev(dev); + rc = devm_add_action_or_reset(dax_region->dev, unregister_dax_dev, dev); + if (rc) return rc; - } return 0; diff --git a/drivers/dax/pmem.c b/drivers/dax/pmem.c index 55d510e..dfb1685 100644 --- a/drivers/dax/pmem.c +++ b/drivers/dax/pmem.c @@ -102,21 +102,19 @@ static int dax_pmem_probe(struct device *dev) if (rc) return rc; - rc = devm_add_action(dev, dax_pmem_percpu_exit, &dax_pmem->ref); - if (rc) { - dax_pmem_percpu_exit(&dax_pmem->ref); + rc = devm_add_action_or_reset(dev, dax_pmem_percpu_exit, + &dax_pmem->ref); + if (rc) return rc; - } addr = devm_memremap_pages(dev, &res, &dax_pmem->ref, altmap); if (IS_ERR(addr)) return PTR_ERR(addr); - rc = devm_add_action(dev, dax_pmem_percpu_kill, &dax_pmem->ref); - if (rc) { - dax_pmem_percpu_kill(&dax_pmem->ref); + rc = devm_add_action_or_reset(dev, dax_pmem_percpu_kill, + &dax_pmem->ref); + if (rc) return rc; - } nd_region = to_nd_region(dev->parent); dax_region = alloc_dax_region(dev, nd_region->id, &res, |
