amba: Convert to devm_ioremap_resource()

Convert all uses of devm_request_and_ioremap() to the newly introduced
devm_ioremap_resource() which provides more consistent error handling.

devm_ioremap_resource() provides its own error messages so all explicit
error messages can be removed from the failure code paths.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/amba/tegra-ahb.c b/drivers/amba/tegra-ahb.c
index 536c166f4253..ab92785f54dc 100644
--- a/drivers/amba/tegra-ahb.c
+++ b/drivers/amba/tegra-ahb.c
@@ -20,6 +20,7 @@
  *
  */
 
+#include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
@@ -257,9 +258,9 @@ static int tegra_ahb_probe(struct platform_device *pdev)
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         if (!res)
                 return -ENODEV;
-        ahb->regs = devm_request_and_ioremap(&pdev->dev, res);
-        if (!ahb->regs)
-                return -EBUSY;
+        ahb->regs = devm_ioremap_resource(&pdev->dev, res);
+        if (IS_ERR(ahb->regs))
+                return PTR_ERR(ahb->regs);
 
         ahb->dev = &pdev->dev;
         platform_set_drvdata(pdev, ahb);