Subject: [PATCH] drm/imx: fix memory leak in imx_pd_bind

From: Navid Emamdoost <[email-masked]>
Date: Fri, 4 Oct 2019 14:09:33 -0500

In imx_pd_bind, the duplicated memory for imxpd->edid via kmemdup should
be released in drm_of_find_panel_or_bridge or imx_pd_register fail.

Fixes: ebc944613567 ("drm: convert drivers to use drm_of_find_panel_or_bridge")
Fixes: 19022aaae677 ("staging: drm/imx: Add parallel display support")
Signed-off-by: Navid Emamdoost <[email-masked]>
---
 drivers/gpu/drm/imx/parallel-display.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c
index e7ce17503ae1..9522d2cb0ad5 100644
--- a/drivers/gpu/drm/imx/parallel-display.c
+++ b/drivers/gpu/drm/imx/parallel-display.c
@@ -227,14 +227,18 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data)
 
 	/* port@1 is the output port */
 	ret = drm_of_find_panel_or_bridge(np, 1, 0, &imxpd->panel, &imxpd->bridge);
-	if (ret && ret != -ENODEV)
+	if (ret && ret != -ENODEV) {
+		kfree(imxpd->edid);
 		return ret;
+	}
 
 	imxpd->dev = dev;
 
 	ret = imx_pd_register(drm, imxpd);
-	if (ret)
+	if (ret) {
+		kfree(imxpd->edid);
 		return ret;
+	}
 
 	dev_set_drvdata(dev, imxpd);
 
-- 
2.17.1

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