[PATCH] x86/microcode: handle sysfs error

Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 6 insertions, 2 deletions

diff --git a/arch/i386/kernel/microcode.c b/arch/i386/kernel/microcode.c
index 9b9479768d5e..c4d0291b519f 100644
--- a/arch/i386/kernel/microcode.c
+++ b/arch/i386/kernel/microcode.c
@@ -656,14 +656,18 @@ static struct attribute_group mc_attr_group = {
 
 static int mc_sysdev_add(struct sys_device *sys_dev)
 {
-        int cpu = sys_dev->id;
+        int err, cpu = sys_dev->id;
         struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
 
         if (!cpu_online(cpu))
                 return 0;
+
         pr_debug("Microcode:CPU %d added\n", cpu);
         memset(uci, 0, sizeof(*uci));
-        sysfs_create_group(&sys_dev->kobj, &mc_attr_group);
+
+        err = sysfs_create_group(&sys_dev->kobj, &mc_attr_group);
+        if (err)
+                return err;
 
         microcode_init_cpu(cpu);
         return 0;