From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kees Cook Date: Sat, 03 Aug 2019 02:12:22 +0000 Subject: Re: [PATCH] video: fbdev: omapfb_main: Mark expected switch fall-throughs Message-Id: <201908021912.0D14906FF9@keescook> List-Id: References: <20190802191542.GA32751@embeddedor> In-Reply-To: <20190802191542.GA32751@embeddedor> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: "Gustavo A. R. Silva" Cc: linux-fbdev@vger.kernel.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Bartlomiej Zolnierkiewicz 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