staging: mrst: Silence a compiler warning

drivers/staging/mrst/drv/psb_page_flip.c: In function 'sync_callback':
drivers/staging/mrst/drv/psb_page_flip.c:102: warning: 'reg_offset' may be used uninitialized in this function

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

diff --git a/drivers/staging/mrst/drv/psb_page_flip.c b/drivers/staging/mrst/drv/psb_page_flip.c
index 536548c..d0625f7 100644 (file)
--- a/drivers/staging/mrst/drv/psb_page_flip.c
+++ b/drivers/staging/mrst/drv/psb_page_flip.c
@@ -93,6 +93,9 @@ write_scanout_regs(struct pending_flip *pending_flip, uint32_t offset)
        case 2:
                reg_offset = DSPCSURF;
                break;
+       default:
+               WARN_ON(1);
+               return;
        }
 
        if (!ospm_power_using_hw_begin(OSPM_DISPLAY_ISLAND,