# \[PATCH\] video: fbdev: omapfb\_main: Mark expected switch fall-throughs - Subsystems: FRAMEBUFFER LAYER, OMAP FRAMEBUFFER SUPPORT, THE REST - Maintainers: Helge Deller, Linus Torvalds - List: linux-fbdev - 2 messages, 2 authors - Page: https://ratatoskr.run/linux-fbdev/2019/08/5677036/t ## \[PATCH\] video: fbdev: omapfb\_main: Mark expected switch fall-throughs - From: Gustavo A. R. Silva \ - Date: 2019-08-02 19:15:48 - Message: https://ratatoskr.run/linux-fbdev/2019/08/5677036.md ```text Mark switch cases where we are expecting to fall through. This patch fixes the following warning (Building: omap1_defconfig arm): 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=] Signed-off-by: Gustavo A. R. Silva --- drivers/video/fbdev/omap/omapfb_main.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/video/fbdev/omap/omapfb_main.c b/drivers/video/fbdev/omap/omapfb_main.c index 90eca64e3144..702cca59bda1 100644 --- 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); -- 2.22.0 ``` ## Re: \[PATCH\] video: fbdev: omapfb\_main: Mark expected switch fall-throughs - From: Kees Cook \ - Date: 2019-08-03 02:12:26 - Message: https://ratatoskr.run/linux-fbdev/2019/08/5677188.md ```text On Fri, Aug 02, 2019 at 02:15:42PM -0500, Gustavo A. R. Silva wrote: > Mark switch cases where we are expecting to fall through. > > This patch fixes the following warning (Building: omap1_defconfig arm): > > 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=] > > Signed-off-by: Gustavo A. R. Silva Reviewed-by: Kees Cook -Kees > --- > drivers/video/fbdev/omap/omapfb_main.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/drivers/video/fbdev/omap/omapfb_main.c b/drivers/video/fbdev/omap/omapfb_main.c > index 90eca64e3144..702cca59bda1 100644 > --- 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); > -- > 2.22.0 > -- Kees Cook ```