driver: replace dev_request_mem_region with dev_request_mem_resource

dev_request_mem_region doesn't work properly one some SoCs on which
PTR_ERR() values clash with valid return values from dev_request_mem_region.
Replace them with dev_request_mem_resource where possible.

This patch has been generated with the following semantic patch:

// <smpl>
@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
-if (IS_ERR(io)) {
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores)) {
...
-	return PTR_ERR(io);
-}
+	return PTR_ERR(iores);
+}
+io = IOMEM(iores->start);
...+>
}

@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
-if (IS_ERR(io)) {
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores))
-	return PTR_ERR(io);
-}
+	return PTR_ERR(iores);
+io = IOMEM(iores->start);
...+>
}

@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
-if (IS_ERR(io)) {
-	ret = PTR_ERR(io);
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores)) {
+	ret = PTR_ERR(iores);
...
}
+io = IOMEM(iores->start);
...+>
}

@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores))
+	return PTR_ERR(iores);
+io = IOMEM(iores->start);
...+>
}

@@
identifier func;
@@
func(...) {
<+...
struct resource *iores;
-struct resource *iores;
...+>
}
// </smpl>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/pinctrl/pinctrl-tegra30.c b/drivers/pinctrl/pinctrl-tegra30.c
index 145a1a821e..4b271dd0b6 100644
--- a/drivers/pinctrl/pinctrl-tegra30.c
+++ b/drivers/pinctrl/pinctrl-tegra30.c
@@ -870,6 +870,7 @@ static struct pinctrl_ops pinctrl_tegra30_ops = {
 
 static int pinctrl_tegra30_probe(struct device_d *dev)
 {
+	struct resource *iores;
 	struct pinctrl_tegra30 *ctrl;
 	int i, ret;
 	u32 **regs;
@@ -884,11 +885,12 @@ static int pinctrl_tegra30_probe(struct device_d *dev)
 	 */
 	regs = (u32 **)&ctrl->regs;
 	for (i = 0; i <= 1; i++) {
-		regs[i] = dev_request_mem_region(dev, i);
-		if (IS_ERR(regs[i])) {
+		iores = dev_request_mem_resource(dev, i);
+		if (IS_ERR(iores)) {
 			dev_err(dev, "Could not get iomem region %d\n", i);
-			return PTR_ERR(regs[i]);
+			return PTR_ERR(iores);
 		}
+		regs[i] = IOMEM(iores->start);
 	}
 
 	dev_get_drvdata(dev, (const void **)&ctrl->drvdata);