From: Eric Anholt <eric@anholt.net>
Date: Tue, 8 Aug 2017 20:56:05 +0000 (-0700)
Subject: drm/vc4: Fix leak of HDMI EDID
X-Git-Tag: archive/raspbian/4.9.82-1+deb9u3+rpi1_jessie~5^2~23
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=81d8808b1b58d0cf750e641c20f7b5d32e975777;p=linux-4.9.git

drm/vc4: Fix leak of HDMI EDID

We don't keep a pointer to it around anywhere, so it's our job to free
it.

Cc: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://github.com/anholt/linux/issues/101
Fixes: c8b75bca92cb ("drm/vc4: Add KMS support for Raspberry Pi.")
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20170808205605.4432-1-eric@anholt.net
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
(cherry picked from commit 5afe0e62a548a0aa7d2095a98530b68f3d2c64e6)
---

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 50ba36ffde9c..48ded8cf45fc 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -243,6 +243,7 @@ static int vc4_hdmi_connector_get_modes(struct drm_connector *connector)
 	drm_mode_connector_update_edid_property(connector, edid);
 	ret = drm_add_edid_modes(connector, edid);
 	drm_edid_to_eld(connector, edid);
+	kfree(edid);
 
 	return ret;
 }