spi/s3c64xx: Check before mem-region release

Add precautionary check before releasing memory region.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/spi/spi_s3c64xx.c b/drivers/spi/spi_s3c64xx.c
index 3acf38119e96..0e883f9c720b 100644
--- a/drivers/spi/spi_s3c64xx.c
+++ b/drivers/spi/spi_s3c64xx.c
@@ -1097,7 +1097,8 @@ static int s3c64xx_spi_remove(struct platform_device *pdev)
         iounmap((void *) sdd->regs);
 
         mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-        release_mem_region(mem_res->start, resource_size(mem_res));
+        if (mem_res != NULL)
+                release_mem_region(mem_res->start, resource_size(mem_res));
 
         platform_set_drvdata(pdev, NULL);
         spi_master_put(master);