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authorEric Anholt <eric@anholt.net>2016-02-06 02:06:15 +0300
committerEric Anholt <eric@anholt.net>2016-02-27 02:51:07 +0300
commit48627eb8dc55c60d35794105f6f79fb627347dbd (patch)
treea6e1389726f15064791815117fc15b2bcc97648a /drivers/gpu/drm/vc4/vc4_crtc.c
parent81f70ba233d5f660e1ea5fe23260ee323af5d53a (diff)
downloadlinux-48627eb8dc55c60d35794105f6f79fb627347dbd.tar.xz
drm/vc4: Fix a framebuffer reference leak on async flip interrupt.
We'd need X to queue up an async pageflip while another is outstanding, and then take a SIGIO. I think X actually avoids sending out the next pageflip while one's already queued, but I'm not sure. Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_crtc.c')
-rw-r--r--drivers/gpu/drm/vc4/vc4_crtc.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
index 018145e0b87d..989ee728e2b0 100644
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
@@ -544,6 +544,7 @@ static int vc4_async_page_flip(struct drm_crtc *crtc,
/* Make sure all other async modesetes have landed. */
ret = down_interruptible(&vc4->async_modeset);
if (ret) {
+ drm_framebuffer_unreference(fb);
kfree(flip_state);
return ret;
}