dmaengine: xgene: devm_ioremap() returns NULL on error

The code here is checking for IS_ERR() but devm_ioremap() returns NULL
on error and not an error pointer.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

1 files changed, 8 insertions, 8 deletions

diff --git a/drivers/dma/xgene-dma.c b/drivers/dma/xgene-dma.c
index 06d40427aa08..8a369460f562 100755
--- a/drivers/dma/xgene-dma.c
+++ b/drivers/dma/xgene-dma.c
@@ -1895,9 +1895,9 @@ static int xgene_dma_get_resources(struct platform_device *pdev,
 
         pdma->csr_dma = devm_ioremap(&pdev->dev, res->start,
                                      resource_size(res));
-        if (IS_ERR(pdma->csr_dma)) {
+        if (!pdma->csr_dma) {
                 dev_err(&pdev->dev, "Failed to ioremap csr region");
-                return PTR_ERR(pdma->csr_dma);
+                return -ENOMEM;
         }
 
         /* Get DMA ring csr region */
@@ -1909,9 +1909,9 @@ static int xgene_dma_get_resources(struct platform_device *pdev,
 
         pdma->csr_ring =  devm_ioremap(&pdev->dev, res->start,
                                        resource_size(res));
-        if (IS_ERR(pdma->csr_ring)) {
+        if (!pdma->csr_ring) {
                 dev_err(&pdev->dev, "Failed to ioremap ring csr region");
-                return PTR_ERR(pdma->csr_ring);
+                return -ENOMEM;
         }
 
         /* Get DMA ring cmd csr region */
@@ -1923,9 +1923,9 @@ static int xgene_dma_get_resources(struct platform_device *pdev,
 
         pdma->csr_ring_cmd = devm_ioremap(&pdev->dev, res->start,
                                           resource_size(res));
-        if (IS_ERR(pdma->csr_ring_cmd)) {
+        if (!pdma->csr_ring_cmd) {
                 dev_err(&pdev->dev, "Failed to ioremap ring cmd csr region");
-                return PTR_ERR(pdma->csr_ring_cmd);
+                return -ENOMEM;
         }
 
         /* Get efuse csr region */
@@ -1937,9 +1937,9 @@ static int xgene_dma_get_resources(struct platform_device *pdev,
 
         pdma->csr_efuse = devm_ioremap(&pdev->dev, res->start,
                                        resource_size(res));
-        if (IS_ERR(pdma->csr_efuse)) {
+        if (!pdma->csr_efuse) {
                 dev_err(&pdev->dev, "Failed to ioremap efuse csr region");
-                return PTR_ERR(pdma->csr_efuse);
+                return -ENOMEM;
         }
 
         /* Get DMA error interrupt */