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-rw-r--r--kernel/power/disk.c34
1 files changed, 16 insertions, 18 deletions
diff --git a/kernel/power/disk.c b/kernel/power/disk.c
index 027322a564f..4d944b281b2 100644
--- a/kernel/power/disk.c
+++ b/kernel/power/disk.c
@@ -363,30 +363,28 @@ static ssize_t resume_show(struct subsystem * subsys, char *buf)
MINOR(swsusp_resume_device));
}
-static ssize_t resume_store(struct subsystem * subsys, const char * buf, size_t n)
+static ssize_t resume_store(struct subsystem *subsys, const char *buf, size_t n)
{
- int len;
- char *p;
unsigned int maj, min;
- int error = -EINVAL;
dev_t res;
+ int ret = -EINVAL;
- p = memchr(buf, '\n', n);
- len = p ? p - buf : n;
+ if (sscanf(buf, "%u:%u", &maj, &min) != 2)
+ goto out;
- if (sscanf(buf, "%u:%u", &maj, &min) == 2) {
- res = MKDEV(maj,min);
- if (maj == MAJOR(res) && min == MINOR(res)) {
- down(&pm_sem);
- swsusp_resume_device = res;
- up(&pm_sem);
- printk("Attempting manual resume\n");
- noresume = 0;
- software_resume();
- }
- }
+ res = MKDEV(maj,min);
+ if (maj != MAJOR(res) || min != MINOR(res))
+ goto out;
- return error >= 0 ? n : error;
+ down(&pm_sem);
+ swsusp_resume_device = res;
+ up(&pm_sem);
+ printk("Attempting manual resume\n");
+ noresume = 0;
+ software_resume();
+ ret = n;
+out:
+ return ret;
}
power_attr(resume);