libnvdimm: IS_ERR() usage cleanup

Prompted by commit 287980e49ffc "remove lots of IS_ERR_VALUE abuses", I
ran make coccicheck against drivers/nvdimm/ and found that:

	if (IS_ERR(x))
		return PTR_ERR(x);
	return 0;

...can be replaced with PTR_ERR_OR_ZERO().

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index f085f8b..e4882e6 100644 (file)
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -395,12 +395,10 @@ int nvdimm_bus_create_ndctl(struct nvdimm_bus *nvdimm_bus)
        dev = device_create(nd_class, &nvdimm_bus->dev, devt, nvdimm_bus,
                        "ndctl%d", nvdimm_bus->id);
 
-       if (IS_ERR(dev)) {
+       if (IS_ERR(dev))
                dev_dbg(&nvdimm_bus->dev, "failed to register ndctl%d: %ld\n",
                                nvdimm_bus->id, PTR_ERR(dev));
-               return PTR_ERR(dev);
-       }
-       return 0;
+       return PTR_ERR_OR_ZERO(dev);
 }
 
 void nvdimm_bus_destroy_ndctl(struct nvdimm_bus *nvdimm_bus)

diff --git a/drivers/nvdimm/claim.c b/drivers/nvdimm/claim.c
index 8b2e3c4..9997ff9 100644 (file)
--- a/drivers/nvdimm/claim.c
+++ b/drivers/nvdimm/claim.c
@@ -266,9 +266,8 @@ int devm_nsio_enable(struct device *dev, struct nd_namespace_io *nsio)
 
        nsio->addr = devm_memremap(dev, res->start, resource_size(res),
                        ARCH_MEMREMAP_PMEM);
-       if (IS_ERR(nsio->addr))
-               return PTR_ERR(nsio->addr);
-       return 0;
+
+       return PTR_ERR_OR_ZERO(nsio->addr);
 }
 EXPORT_SYMBOL_GPL(devm_nsio_enable);