iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

watchdog: s3c2410_wdt.c: Convert release_resource to release_region/release_mem_region

Browse Source 
Request_mem_region should be used with release_mem_region, not
release_resource.

The semantic match that finds this 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>
This commit is contained in:
Julia Lawall 2011-02-26 17:34:38 +01:00 committed by Wim Van Sebroeck
parent 89078d572e
commit f72401e94d
1 changed files with 8 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/watchdog/s3c2410_wdt.c
View File

@ -402,7 +402,6 @@ static inline void s3c2410wdt_cpufreq_deregister(void)
static int __devinit s3c2410wdt_probe(struct platform_device *pdev)
{
struct resource *res;
struct device *dev;
unsigned int wtcon;
int started = 0;
@ -416,20 +415,19 @@ static int __devinit s3c2410wdt_probe(struct platform_device *pdev)
/* get the memory region for the watchdog timer */
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, "no memory resource specified\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 -EBUSY;
}
wdt_base = ioremap(res->start, size);
wdt_base = ioremap(wdt_mem->start, size);
if (wdt_base == NULL) {
dev_err(dev, "failed to ioremap() region\n");
ret = -EINVAL;
@ -524,8 +522,8 @@ static int __devinit s3c2410wdt_probe(struct platform_device *pdev)
iounmap(wdt_base);
err_req:
release_resource(wdt_mem);
kfree(wdt_mem);
release_mem_region(wdt_mem->start, size);
wdt_mem = NULL;
return ret;
}
@ -545,8 +543,7 @@ static int __devexit s3c2410wdt_remove(struct platform_device *dev)
iounmap(wdt_base);
release_resource(wdt_mem);
kfree(wdt_mem);
release_mem_region(wdt_mem->start, resource_size(wdt_mem));
wdt_mem = NULL;
return 0;
}