iommu/shmobile: Use devm_ioremap_resource()

Replace the devm_ioremap_nocache() call with devm_ioremap_resource().
This simplifies error checking.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

1 files changed, 6 insertions, 11 deletions

diff --git a/drivers/iommu/shmobile-ipmmu.c b/drivers/iommu/shmobile-ipmmu.c
index 6ba611002c6f..bd97adecb1fd 100644
--- a/drivers/iommu/shmobile-ipmmu.c
+++ b/drivers/iommu/shmobile-ipmmu.c
@@ -94,11 +94,6 @@ static int ipmmu_probe(struct platform_device *pdev)
         struct resource *res;
         struct shmobile_ipmmu_platform_data *pdata = pdev->dev.platform_data;
 
-        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-        if (!res) {
-                dev_err(&pdev->dev, "cannot get platform resources\n");
-                return -ENOENT;
-        }
         ipmmu = devm_kzalloc(&pdev->dev, sizeof(*ipmmu), GFP_KERNEL);
         if (!ipmmu) {
                 dev_err(&pdev->dev, "cannot allocate device data\n");
@@ -106,12 +101,12 @@ static int ipmmu_probe(struct platform_device *pdev)
         }
         spin_lock_init(&ipmmu->flush_lock);
         ipmmu->dev = &pdev->dev;
-        ipmmu->ipmmu_base = devm_ioremap_nocache(&pdev->dev, res->start,
-                                                resource_size(res));
-        if (!ipmmu->ipmmu_base) {
-                dev_err(&pdev->dev, "ioremap_nocache failed\n");
-                return -ENOMEM;
-        }
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        ipmmu->ipmmu_base = devm_ioremap_resource(&pdev->dev, res);
+        if (IS_ERR(ipmmu->ipmmu_base))
+                return PTR_ERR(ipmmu->ipmmu_base);
+
         ipmmu->dev_names = pdata->dev_names;
         ipmmu->num_dev_names = pdata->num_dev_names;
         platform_set_drvdata(pdev, ipmmu);