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Diffstat (limited to 'kernel/power/hibernate.c')
-rw-r--r--kernel/power/hibernate.c22
1 files changed, 12 insertions, 10 deletions
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index 37170d4dd9a6..f4f2073711d3 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -973,16 +973,20 @@ static ssize_t resume_show(struct kobject *kobj, struct kobj_attribute *attr,
973static ssize_t resume_store(struct kobject *kobj, struct kobj_attribute *attr, 973static ssize_t resume_store(struct kobject *kobj, struct kobj_attribute *attr,
974 const char *buf, size_t n) 974 const char *buf, size_t n)
975{ 975{
976 unsigned int maj, min;
977 dev_t res; 976 dev_t res;
978 int ret = -EINVAL; 977 int len = n;
978 char *name;
979 979
980 if (sscanf(buf, "%u:%u", &maj, &min) != 2) 980 if (len && buf[len-1] == '\n')
981 goto out; 981 len--;
982 name = kstrndup(buf, len, GFP_KERNEL);
983 if (!name)
984 return -ENOMEM;
982 985
983 res = MKDEV(maj,min); 986 res = name_to_dev_t(name);
984 if (maj != MAJOR(res) || min != MINOR(res)) 987 kfree(name);
985 goto out; 988 if (!res)
989 return -EINVAL;
986 990
987 lock_system_sleep(); 991 lock_system_sleep();
988 swsusp_resume_device = res; 992 swsusp_resume_device = res;
@@ -990,9 +994,7 @@ static ssize_t resume_store(struct kobject *kobj, struct kobj_attribute *attr,
990 printk(KERN_INFO "PM: Starting manual resume from disk\n"); 994 printk(KERN_INFO "PM: Starting manual resume from disk\n");
991 noresume = 0; 995 noresume = 0;
992 software_resume(); 996 software_resume();
993 ret = n; 997 return n;
994 out:
995 return ret;
996} 998}
997 999
998power_attr(resume); 1000power_attr(resume);