Get rid of those two warnings:
drivers/media/platform/davinci/vpif_capture.c: In function 'vpif_remove':
drivers/media/platform/davinci/vpif_capture.c:1722:21: warning: variable 'common' set but not used [-Wunused-but-set-variable]
  struct common_obj *common;
                     ^~~~~~
drivers/media/platform/davinci/vpif_display.c: In function 'vpif_remove':
drivers/media/platform/davinci/vpif_display.c:1342:21: warning: variable 'common' set but not used [-Wunused-but-set-variable]
  struct common_obj *common;
                     ^~~~~~
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
  */
 static int vpif_remove(struct platform_device *device)
 {
-       struct common_obj *common;
        struct channel_obj *ch;
        int i;
 
        for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
                /* Get the pointer to the channel object */
                ch = vpif_obj.dev[i];
-               common = &ch->common[VPIF_VIDEO_INDEX];
                /* Unregister video device */
                video_unregister_device(&ch->video_dev);
                kfree(vpif_obj.dev[i]);
 
  */
 static int vpif_remove(struct platform_device *device)
 {
-       struct common_obj *common;
        struct channel_obj *ch;
        int i;
 
        for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
                /* Get the pointer to the channel object */
                ch = vpif_obj.dev[i];
-               common = &ch->common[VPIF_VIDEO_INDEX];
                /* Unregister video device */
                video_unregister_device(&ch->video_dev);
                kfree(vpif_obj.dev[i]);