diff mbox

[07/15] devm_memremap: convert to return ERR_PTR

Message ID 20150923044150.36490.15073.stgit@dwillia2-desk3.jf.intel.com (mailing list archive)
State Accepted
Commit b36f47617f6c
Headers show

Commit Message

Dan Williams Sept. 23, 2015, 4:41 a.m. UTC 
Make devm_memremap consistent with the error return scheme of
devm_memremap_pages to remove special casing in the pmem driver.

Cc: Christoph Hellwig <hch@lst.de>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
 drivers/nvdimm/pmem.c |   16 ++++++----------
 kernel/memremap.c     |    2 +-
 2 files changed, 7 insertions(+), 11 deletions(-)

Comments

Christoph Hellwig Sept. 24, 2015, 3:13 p.m. UTC | #1 
On Wed, Sep 23, 2015 at 12:41:50AM -0400, Dan Williams wrote:
> Make devm_memremap consistent with the error return scheme of
> devm_memremap_pages to remove special casing in the pmem driver.

Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>
diff mbox

Patch

diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index 0680affae04a..9805d311b1d1 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -150,19 +150,15 @@  static struct pmem_device *pmem_alloc(struct device *dev,
 		return ERR_PTR(-EBUSY);
 	}
 
-	if (pmem_should_map_pages(dev)) {
-		void *addr = devm_memremap_pages(dev, res);
-
-		if (IS_ERR(addr))
-			return addr;
-		pmem->virt_addr = (void __pmem *) addr;
-	} else {
+	if (pmem_should_map_pages(dev))
+		pmem->virt_addr = (void __pmem *) devm_memremap_pages(dev, res);
+	else
 		pmem->virt_addr = (void __pmem *) devm_memremap(dev,
 				pmem->phys_addr, pmem->size,
 				ARCH_MEMREMAP_PMEM);
-		if (!pmem->virt_addr)
-			return ERR_PTR(-ENXIO);
-	}
+
+	if (IS_ERR(pmem->virt_addr))
+		return (void __force *) pmem->virt_addr;
 
 	return pmem;
 }
diff --git a/kernel/memremap.c b/kernel/memremap.c
index 0756273437e0..0d818ce04129 100644
--- a/kernel/memremap.c
+++ b/kernel/memremap.c
@@ -116,7 +116,7 @@  void *devm_memremap(struct device *dev, resource_size_t offset,
 
 	ptr = devres_alloc(devm_memremap_release, sizeof(*ptr), GFP_KERNEL);
 	if (!ptr)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 
 	addr = memremap(offset, size, flags);
 	if (addr) {