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Commit d343d7f9 authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
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V4L/DVB (6343): ivtvfb: check return value of unregister_framebuffer 



Prevent unloading the framebuffer if it is still in use.

Signed-off-by: default avatarHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent 18e16f9c

drivers/media/video/ivtv/ivtvfb.c

+4 −1
Original line number Diff line number Diff line
@@ -1169,9 +1169,12 @@ static void ivtvfb_cleanup(void) 
	for (i = 0; i < ivtv_cards_active; i++) {

		itv = ivtv_cards[i];

		if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) && itv->osd_info) {

			if (unregister_framebuffer(&itv->osd_info->ivtvfb_info)) {

				IVTVFB_WARN("Framebuffer %d is in use, cannot unload\n", i);

				return;

			}

			IVTVFB_DEBUG_INFO("Unregister framebuffer %d\n", i);

			ivtvfb_blank(FB_BLANK_POWERDOWN, &itv->osd_info->ivtvfb_info);

			unregister_framebuffer(&itv->osd_info->ivtvfb_info);

			ivtvfb_release_buffers(itv);

			itv->osd_video_pbase = 0;

		}