drm/exynos/hdmi: fix edid memory leak

This change “drm/exynos/hdmi: fix edid memory leak” in Linux kernel is authored by Andrzej Hajda <a.hajda [at] samsung.com> on Thu Jul 9 08:25:38 2015 +0200.

drm/exynos/hdmi: fix edid memory leak

edid returned by drm_get_edid should be freed.
The patch fixes it.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

This Linux change may have been applied to various maintained Linux releases and you can find Linux releases including commit e6e771d.

There are 7 lines of Linux source code added/deleted in this change. Code changes to Linux kernel are as follows.

 drivers/gpu/drm/exynos/exynos_hdmi.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 99e2864..4a00990 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -1064,6 +1064,7 @@ static int hdmi_get_modes(struct drm_connector *connector)
 	struct hdmi_context *hdata = ctx_from_connector(connector);
 	struct edid *edid;
+	int ret;
 	if (!hdata->ddc_adpt)
 		return -ENODEV;
@@ -1079,7 +1080,11 @@ static int hdmi_get_modes(struct drm_connector *connector)
 	drm_mode_connector_update_edid_property(connector, edid);
-	return drm_add_edid_modes(connector, edid);
+	ret = drm_add_edid_modes(connector, edid);
+	kfree(edid);
+	return ret;
 static int hdmi_find_phy_conf(struct hdmi_context *hdata, u32 pixel_clock)

The commit for this change in Linux stable tree is e6e771d (patch).

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