vga_switcheroo: comparing too few characters in strncmp()

This is a copy-and-paste bug.  We should be comparing 4 characters here
instead of 3.

Signed-off-by: Dan Carpenter <error27@gmail.com>
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 d2d8543686d38d54a33ea75caf0fda958a4176ca..e01cacba685f771f0f82a660b1e1bc21cd0b40e8 100644 (file)
--- a/drivers/gpu/vga/vga_switcheroo.c
+++ b/drivers/gpu/vga/vga_switcheroo.c
@@ -346,11 +346,11 @@ vga_switcheroo_debugfs_write(struct file *filp, const char __user *ubuf,
        if (strncmp(usercmd, "DIS", 3) == 0)
                client_id = VGA_SWITCHEROO_DIS;
 
-       if (strncmp(usercmd, "MIGD", 3) == 0) {
+       if (strncmp(usercmd, "MIGD", 4) == 0) {
                just_mux = true;
                client_id = VGA_SWITCHEROO_IGD;
        }
-       if (strncmp(usercmd, "MDIS", 3) == 0) {
+       if (strncmp(usercmd, "MDIS", 4) == 0) {
                just_mux = true;
                client_id = VGA_SWITCHEROO_DIS;
        }