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authorJulia Lawall <julia@diku.dk>2011-02-26 19:34:39 +0300
committerWim Van Sebroeck <wim@iguana.be>2011-03-29 15:05:48 +0400
commitf712eacf02ecfbf4f1686addb8c569841549b0b7 (patch)
treea03d001ec58a239cc00e2b396b7901bc51838d7d
parentf72401e94d159bc4b2beab51d74e956da2c32e0a (diff)
downloadlinux-f712eacf02ecfbf4f1686addb8c569841549b0b7.tar.xz
watchdog: Convert release_resource to release_region/release_mem_region
Request_mem_region should be used with release_mem_region, not release_resource. In pnx4008_wdt.c, a missing clk_put is added as well. The semantic match that finds the first problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression x,E; @@ *x = request_mem_region(...) ... when != release_mem_region(x) when != x = E * release_resource(x); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Cc: stable <stable@kernel.org>
-rw-r--r--drivers/watchdog/davinci_wdt.c22
-rw-r--r--drivers/watchdog/max63xx_wdt.c20
-rw-r--r--drivers/watchdog/pnx4008_wdt.c28
3 files changed, 31 insertions, 39 deletions
diff --git a/drivers/watchdog/davinci_wdt.c b/drivers/watchdog/davinci_wdt.c
index 596ba604e78d..51b5551b4e3f 100644
--- a/drivers/watchdog/davinci_wdt.c
+++ b/drivers/watchdog/davinci_wdt.c
@@ -202,7 +202,6 @@ static struct miscdevice davinci_wdt_miscdev = {
static int __devinit davinci_wdt_probe(struct platform_device *pdev)
{
int ret = 0, size;
- struct resource *res;
struct device *dev = &pdev->dev;
wdt_clk = clk_get(dev, NULL);
@@ -216,31 +215,31 @@ static int __devinit davinci_wdt_probe(struct platform_device *pdev)
dev_info(dev, "heartbeat %d sec\n", heartbeat);
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL) {
+ wdt_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (wdt_mem == NULL) {
dev_err(dev, "failed to get memory region resource\n");
return -ENOENT;
}
- size = resource_size(res);
- wdt_mem = request_mem_region(res->start, size, pdev->name);
-
- if (wdt_mem == NULL) {
+ size = resource_size(wdt_mem);
+ if (!request_mem_region(wdt_mem->start, size, pdev->name)) {
dev_err(dev, "failed to get memory region\n");
return -ENOENT;
}
- wdt_base = ioremap(res->start, size);
+ wdt_base = ioremap(wdt_mem->start, size);
if (!wdt_base) {
dev_err(dev, "failed to map memory region\n");
+ release_mem_region(wdt_mem->start, size);
+ wdt_mem = NULL;
return -ENOMEM;
}
ret = misc_register(&davinci_wdt_miscdev);
if (ret < 0) {
dev_err(dev, "cannot register misc device\n");
- release_resource(wdt_mem);
- kfree(wdt_mem);
+ release_mem_region(wdt_mem->start, size);
+ wdt_mem = NULL;
} else {
set_bit(WDT_DEVICE_INITED, &wdt_status);
}
@@ -253,8 +252,7 @@ static int __devexit davinci_wdt_remove(struct platform_device *pdev)
{
misc_deregister(&davinci_wdt_miscdev);
if (wdt_mem) {
- release_resource(wdt_mem);
- kfree(wdt_mem);
+ release_mem_region(wdt_mem->start, resource_size(wdt_mem));
wdt_mem = NULL;
}
diff --git a/drivers/watchdog/max63xx_wdt.c b/drivers/watchdog/max63xx_wdt.c
index 7a82ce5a6337..73ba2fd8e591 100644
--- a/drivers/watchdog/max63xx_wdt.c
+++ b/drivers/watchdog/max63xx_wdt.c
@@ -270,7 +270,6 @@ static int __devinit max63xx_wdt_probe(struct platform_device *pdev)
{
int ret = 0;
int size;
- struct resource *res;
struct device *dev = &pdev->dev;
struct max63xx_timeout *table;
@@ -294,21 +293,19 @@ static int __devinit max63xx_wdt_probe(struct platform_device *pdev)
max63xx_pdev = pdev;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL) {
+ wdt_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (wdt_mem == NULL) {
dev_err(dev, "failed to get memory region resource\n");
return -ENOENT;
}
- size = resource_size(res);
- wdt_mem = request_mem_region(res->start, size, pdev->name);
-
- if (wdt_mem == NULL) {
+ size = resource_size(wdt_mem);
+ if (!request_mem_region(wdt_mem->start, size, pdev->name)) {
dev_err(dev, "failed to get memory region\n");
return -ENOENT;
}
- wdt_base = ioremap(res->start, size);
+ wdt_base = ioremap(wdt_mem->start, size);
if (!wdt_base) {
dev_err(dev, "failed to map memory region\n");
ret = -ENOMEM;
@@ -326,8 +323,8 @@ static int __devinit max63xx_wdt_probe(struct platform_device *pdev)
out_unmap:
iounmap(wdt_base);
out_request:
- release_resource(wdt_mem);
- kfree(wdt_mem);
+ release_mem_region(wdt_mem->start, size);
+ wdt_mem = NULL;
return ret;
}
@@ -336,8 +333,7 @@ static int __devexit max63xx_wdt_remove(struct platform_device *pdev)
{
misc_deregister(&max63xx_wdt_miscdev);
if (wdt_mem) {
- release_resource(wdt_mem);
- kfree(wdt_mem);
+ release_mem_region(wdt_mem->start, resource_size(wdt_mem));
wdt_mem = NULL;
}
diff --git a/drivers/watchdog/pnx4008_wdt.c b/drivers/watchdog/pnx4008_wdt.c
index c7cf4cbf8ab3..614933225560 100644
--- a/drivers/watchdog/pnx4008_wdt.c
+++ b/drivers/watchdog/pnx4008_wdt.c
@@ -254,7 +254,6 @@ static struct miscdevice pnx4008_wdt_miscdev = {
static int __devinit pnx4008_wdt_probe(struct platform_device *pdev)
{
int ret = 0, size;
- struct resource *res;
if (heartbeat < 1 || heartbeat > MAX_HEARTBEAT)
heartbeat = DEFAULT_HEARTBEAT;
@@ -262,42 +261,42 @@ static int __devinit pnx4008_wdt_probe(struct platform_device *pdev)
printk(KERN_INFO MODULE_NAME
"PNX4008 Watchdog Timer: heartbeat %d sec\n", heartbeat);
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL) {
+ wdt_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (wdt_mem == NULL) {
printk(KERN_INFO MODULE_NAME
"failed to get memory region resouce\n");
return -ENOENT;
}
- size = resource_size(res);
- wdt_mem = request_mem_region(res->start, size, pdev->name);
+ size = resource_size(wdt_mem);
- if (wdt_mem == NULL) {
+ if (!request_mem_region(wdt_mem->start, size, pdev->name)) {
printk(KERN_INFO MODULE_NAME "failed to get memory region\n");
return -ENOENT;
}
- wdt_base = (void __iomem *)IO_ADDRESS(res->start);
+ wdt_base = (void __iomem *)IO_ADDRESS(wdt_mem->start);
wdt_clk = clk_get(&pdev->dev, NULL);
if (IS_ERR(wdt_clk)) {
ret = PTR_ERR(wdt_clk);
- release_resource(wdt_mem);
- kfree(wdt_mem);
+ release_mem_region(wdt_mem->start, size);
+ wdt_mem = NULL;
goto out;
}
ret = clk_enable(wdt_clk);
if (ret) {
- release_resource(wdt_mem);
- kfree(wdt_mem);
+ release_mem_region(wdt_mem->start, size);
+ wdt_mem = NULL;
+ clk_put(wdt_clk);
goto out;
}
ret = misc_register(&pnx4008_wdt_miscdev);
if (ret < 0) {
printk(KERN_ERR MODULE_NAME "cannot register misc device\n");
- release_resource(wdt_mem);
- kfree(wdt_mem);
+ release_mem_region(wdt_mem->start, size);
+ wdt_mem = NULL;
clk_disable(wdt_clk);
clk_put(wdt_clk);
} else {
@@ -320,8 +319,7 @@ static int __devexit pnx4008_wdt_remove(struct platform_device *pdev)
clk_put(wdt_clk);
if (wdt_mem) {
- release_resource(wdt_mem);
- kfree(wdt_mem);
+ release_mem_region(wdt_mem->start, resource_size(wdt_mem));
wdt_mem = NULL;
}
return 0;