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>
diff --git a/drivers/iommu/shmobile-ipmmu.c b/drivers/iommu/shmobile-ipmmu.c
index 6ba6110..bd97ade 100644
--- a/drivers/iommu/shmobile-ipmmu.c
+++ b/drivers/iommu/shmobile-ipmmu.c
@@ -94,11 +94,6 @@
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 @@
}
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);