ata: sata_mv: Convert to devm_ioremap_resource()

Convert to devm_ioremap_resource() which provides more consistent error
handling.

Note that devm_ioremap_resource() provides its own error messages.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 5 insertions, 8 deletions

diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index 6eed4a72d328..00ce26d0c047 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -4067,6 +4067,7 @@ static int mv_platform_probe(struct platform_device *pdev)
         struct ata_host *host;
         struct mv_host_priv *hpriv;
         struct resource *res;
+        void __iomem *mmio;
         int n_ports = 0, irq = 0;
         int rc;
         int port;
@@ -4085,8 +4086,9 @@ static int mv_platform_probe(struct platform_device *pdev)
          * Get the register base first
          */
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-        if (res == NULL)
-                return -EINVAL;
+        mmio = devm_ioremap_resource(&pdev->dev, res);
+        if (IS_ERR(mmio))
+                return PTR_ERR(mmio);
 
         /* allocate host */
         if (pdev->dev.of_node) {
@@ -4130,12 +4132,7 @@ static int mv_platform_probe(struct platform_device *pdev)
         hpriv->board_idx = chip_soc;
 
         host->iomap = NULL;
-        hpriv->base = devm_ioremap(&pdev->dev, res->start,
-                                   resource_size(res));
-        if (!hpriv->base)
-                return -ENOMEM;
-
-        hpriv->base -= SATAHC0_REG_BASE;
+        hpriv->base = mmio - SATAHC0_REG_BASE;
 
         hpriv->clk = clk_get(&pdev->dev, NULL);
         if (IS_ERR(hpriv->clk))