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, 10 insertions, 6 deletions

diff --git a/drivers/mtd/nand/nand_denali_dt.c b/drivers/mtd/nand/nand_denali_dt.c
index 6a3aee1415..2c6b188094 100644
--- a/drivers/mtd/nand/nand_denali_dt.c
+++ b/drivers/mtd/nand/nand_denali_dt.c
@@ -36,6 +36,7 @@ struct denali_dt {
 
 static int denali_dt_probe(struct device_d *ofdev)
 {
+	struct resource *iores;
 	struct denali_dt *dt;
 	struct denali_nand_info *denali;
 	int ret;
@@ -51,12 +52,15 @@ static int denali_dt_probe(struct device_d *ofdev)
 	denali->platform = DT;
 	denali->dev = ofdev;
 
-	denali->flash_mem = dev_request_mem_region(ofdev, 0);
-	if (IS_ERR(denali->flash_mem))
-		return PTR_ERR(denali->flash_mem);
-	denali->flash_reg = dev_request_mem_region(ofdev, 1);
-	if (IS_ERR(denali->flash_reg))
-		return PTR_ERR(denali->flash_reg);
+	iores = dev_request_mem_resource(ofdev, 0);
+	if (IS_ERR(iores))
+		return PTR_ERR(iores);
+	denali->flash_mem = IOMEM(iores->start);
+
+	iores = dev_request_mem_resource(ofdev, 1);
+	if (IS_ERR(iores))
+		return PTR_ERR(iores);
+	denali->flash_reg = IOMEM(iores->start);
 
 	dt->clk = clk_get(ofdev, NULL);
 	if (IS_ERR(dt->clk)) {