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From 85e5b58da528a7b32bf3a570b31f46129f2ecea9 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Fri, 5 Feb 2016 15:06:15 -0800
Subject: [PATCH] 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>
(cherry picked from commit 48627eb8dc55c60d35794105f6f79fb627347dbd)
---
drivers/gpu/drm/vc4/vc4_crtc.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
@@ -527,6 +527,7 @@ static int vc4_async_page_flip(struct dr
/* 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;
}
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