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, 13 insertions, 9 deletions

diff --git a/drivers/gpio/gpio-clps711x.c b/drivers/gpio/gpio-clps711x.c
index 43268b6bbf..d71c606690 100644
--- a/drivers/gpio/gpio-clps711x.c
+++ b/drivers/gpio/gpio-clps711x.c
@@ -15,6 +15,7 @@
 
 static int clps711x_gpio_probe(struct device_d *dev)
 {
+	struct resource *iores;
 	int err, id = dev->id;
 	void __iomem *dat, *dir = NULL, *dir_inv = NULL;
 	struct bgpio_chip *bgc;
@@ -25,20 +26,23 @@ static int clps711x_gpio_probe(struct device_d *dev)
 	if (id < 0 || id > 4)
 		return -ENODEV;
 
-	dat = dev_request_mem_region(dev, 0);
-	if (IS_ERR(dat))
-		return PTR_ERR(dat);
+	iores = dev_request_mem_resource(dev, 0);
+	if (IS_ERR(iores))
+		return PTR_ERR(iores);
+	dat = IOMEM(iores->start);
 
 	switch (id) {
 	case 3:
-		dir_inv = dev_request_mem_region(dev, 1);
-		if (IS_ERR(dir_inv))
-			return PTR_ERR(dir_inv);
+		iores = dev_request_mem_resource(dev, 1);
+		if (IS_ERR(iores))
+			return PTR_ERR(iores);
+		dir_inv = IOMEM(iores->start);
 		break;
 	default:
-		dir = dev_request_mem_region(dev, 1);
-		if (IS_ERR(dir))
-			return PTR_ERR(dir);
+		iores = dev_request_mem_resource(dev, 1);
+		if (IS_ERR(iores))
+			return PTR_ERR(iores);
+		dir = IOMEM(iores->start);
 		break;
 	}