gpu: vga_switcheroo, fix lock imbalance
Stanse found that one error path in vga_switcheroo_debugfs_write omits to
unlock vgasr_mutex. Fix that.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/vga/vga_switcheroo.c b/drivers/gpu/vga/vga_switcheroo.c
index d6d1149..c8768f3 100644
--- a/drivers/gpu/vga/vga_switcheroo.c
+++ b/drivers/gpu/vga/vga_switcheroo.c
@@ -276,8 +276,10 @@
mutex_lock(&vgasr_mutex);
- if (!vgasr_priv.active)
- return -EINVAL;
+ if (!vgasr_priv.active) {
+ cnt = -EINVAL;
+ goto out;
+ }
/* pwr off the device not in use */
if (strncmp(usercmd, "OFF", 3) == 0) {