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>
diff --git a/drivers/watchdog/davinci_wdt.c b/drivers/watchdog/davinci_wdt.c
index 596ba60..51b5551 100644
--- a/drivers/watchdog/davinci_wdt.c
+++ b/drivers/watchdog/davinci_wdt.c
@@ -202,7 +202,6 @@
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 @@
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 @@
{
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;
}