msm: mdss: fix deadlock between commit thread and shutdown



There is a deadlock in use cases where fb shutdown
is called. To avoid this condition we need to
kill display thread before release happens during
shutdown.

Change-Id: I24b03e60179c605a8572b5a011d746002e26ca18
Signed-off-by: Ingrid Gallardo <ingridg@codeaurora.org>

parent b05ec824

drivers/video/msm/mdss/mdss_fb.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -2135,6 +2135,10 @@ static int mdss_fb_release_all(struct fb_info *info, bool release_all)
		pm_runtime_put(info->dev);
		} while (release_all && pinfo->ref_cnt);

		/* we need to stop display thread before release */
		if (release_all && mfd->disp_thread)
		mdss_fb_stop_disp_thread(mfd);

		if (pinfo->ref_cnt == 0) {
		list_del(&pinfo->list);
		kfree(pinfo);