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-tegra-xusb.c b/drivers/pinctrl/pinctrl-tegra-xusb.c
index d567754fd7..a7a75bb9c5 100644
--- a/drivers/pinctrl/pinctrl-tegra-xusb.c
+++ b/drivers/pinctrl/pinctrl-tegra-xusb.c
@@ -378,6 +378,7 @@ static struct pinctrl_ops pinctrl_tegra_xusb_ops = {
 
 static int pinctrl_tegra_xusb_probe(struct device_d *dev)
 {
+	struct resource *iores;
 	struct tegra_xusb_padctl *padctl;
 	struct phy *phy;
 	int err;
@@ -389,11 +390,12 @@ static int pinctrl_tegra_xusb_probe(struct device_d *dev)
 
 	dev_get_drvdata(dev, (const void **)&padctl->soc);
 
-	padctl->regs = dev_request_mem_region(dev, 0);
-	if (IS_ERR(padctl->regs)) {
+	iores = dev_request_mem_resource(dev, 0);
+	if (IS_ERR(iores)) {
 		dev_err(dev, "Could not get iomem region\n");
-		return PTR_ERR(padctl->regs);
+		return PTR_ERR(iores);
 	}
+	padctl->regs = IOMEM(iores->start);
 
 	padctl->rst = reset_control_get(dev, NULL);
 	if (IS_ERR(padctl->rst))