target/linux/brcm2708/patches-4.4/0287-drm-vc4-Fix-a-framebuffer-reference-leak-on-async-fl.patch

   1 From 73902ea67be85e6a5d440fed2c53e5364125c4e1 Mon Sep 17 00:00:00 2001
   2 From: Eric Anholt <eric@anholt.net>
   3 Date: Fri, 5 Feb 2016 15:06:15 -0800
   4 Subject: [PATCH 287/381] drm/vc4: Fix a framebuffer reference leak on async
   5  flip interrupt.
   6
   7 We'd need X to queue up an async pageflip while another is
   8 outstanding, and then take a SIGIO.  I think X actually avoids sending
   9 out the next pageflip while one's already queued, but I'm not sure.
  10
  11 Signed-off-by: Eric Anholt <eric@anholt.net>
  12 (cherry picked from commit 48627eb8dc55c60d35794105f6f79fb627347dbd)
  13 ---
  14  drivers/gpu/drm/vc4/vc4_crtc.c | 1 +
  15  1 file changed, 1 insertion(+)
  16
  17 --- a/drivers/gpu/drm/vc4/vc4_crtc.c
  18 +++ b/drivers/gpu/drm/vc4/vc4_crtc.c
  19 @@ -527,6 +527,7 @@ static int vc4_async_page_flip(struct dr
  20         /* Make sure all other async modesetes have landed. */
  21         ret = down_interruptible(&vc4->async_modeset);
  22         if (ret) {
  23 +               drm_framebuffer_unreference(fb);
  24                 kfree(flip_state);
  25                 return ret;
  26         }