video: fbdev: omapfb_main: Mark expected switch fall-throughs

Mark switch cases where we are expecting to fall through.

This patch fixes the following warning (Building: omap1_defconfig arm):

drivers/watchdog/wdt285.c:170:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/watchdog/ar7_wdt.c:237:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/video/fbdev/omap/omapfb_main.c:449:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/video/fbdev/omap/omapfb_main.c:1549:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/video/fbdev/omap/omapfb_main.c:1547:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/video/fbdev/omap/omapfb_main.c:1545:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/video/fbdev/omap/omapfb_main.c:1543:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/video/fbdev/omap/omapfb_main.c:1540:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/video/fbdev/omap/omapfb_main.c:1538:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/video/fbdev/omap/omapfb_main.c:1535:3: warning: this statement may fall through [-Wimplicit-fallthrough=]

Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>

diff --git a/drivers/video/fbdev/omap/omapfb_main.c b/drivers/video/fbdev/omap/omapfb_main.c
index 90eca64..702cca5 100644 (file)
--- a/drivers/video/fbdev/omap/omapfb_main.c
+++ b/drivers/video/fbdev/omap/omapfb_main.c
@@ -447,6 +447,7 @@ static int set_color_mode(struct omapfb_plane_struct *plane,
                return 0;
        case 12:
                var->bits_per_pixel = 16;
+               /* fall through */
        case 16:
                if (plane->fbdev->panel->bpp == 12)
                        plane->color_mode = OMAPFB_COLOR_RGB444;
@@ -1534,20 +1535,27 @@ static void omapfb_free_resources(struct omapfb_device *fbdev, int state)
        case OMAPFB_ACTIVE:
                for (i = 0; i < fbdev->mem_desc.region_cnt; i++)
                        unregister_framebuffer(fbdev->fb_info[i]);
+               /* fall through */
        case 7:
                omapfb_unregister_sysfs(fbdev);
+               /* fall through */
        case 6:
                if (fbdev->panel->disable)
                        fbdev->panel->disable(fbdev->panel);
+               /* fall through */
        case 5:
                omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED);
+               /* fall through */
        case 4:
                planes_cleanup(fbdev);
+               /* fall through */
        case 3:
                ctrl_cleanup(fbdev);
+               /* fall through */
        case 2:
                if (fbdev->panel->cleanup)
                        fbdev->panel->cleanup(fbdev->panel);
+               /* fall through */
        case 1:
                dev_set_drvdata(fbdev->dev, NULL);
                kfree(fbdev);