Staging: sm750fb: provide error path for hw_sm750le_setBLANK()

This provides a default path for the switch statement in
hw_sm750le_setBLANK() so that the compiler will not correctly complain
about undefined values being sent to the hardware.

Instead, properly error out if the blank command is unknown by the
driver.

Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Teddy Wang <teddy.wang@siliconmotion.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/sm750fb/sm750_hw.c b/drivers/staging/sm750fb/sm750_hw.c
index a2b7fe2..c44a50b 100644 (file)
--- a/drivers/staging/sm750fb/sm750_hw.c
+++ b/drivers/staging/sm750fb/sm750_hw.c
@@ -472,6 +472,8 @@ int hw_sm750le_setBLANK(struct lynxfb_output * output,int blank){
                        dpms = CRT_DISPLAY_CTRL_DPMS_3;
                        crtdb = CRT_DISPLAY_CTRL_BLANK_ON;
                        break;
+               default:
+                       return -EINVAL;
        }
 
        if(output->paths & sm750_crt){