linux-kernel - [PATCH v2] drm/imx: Fix memory leak in imx_pd_connector_get

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Message-Id: <20220108165230.44610-1-jose.exposito89@gmail.com>
Date:   Sat,  8 Jan 2022 17:52:30 +0100
From:   José Expósito <jose.exposito89@...il.com>
To:     LW@...o-electronics.de
Cc:     airlied@...ux.ie, daniel@...ll.ch, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        linux-imx@....com, dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        p.zabel@...gutronix.de,
        José Expósito <jose.exposito89@...il.com>
Subject: [PATCH v2] drm/imx: Fix memory leak in imx_pd_connector_get_modes

Avoid leaking the display mode variable if of_get_drm_display_mode
fails.

Fixes: 76ecd9c9fb24 ("drm/imx: parallel-display: check return code from of_get_drm_display_mode()")
Addresses-Coverity-ID: 1443943 ("Resource leak")
Signed-off-by: José Expósito <jose.exposito89@...il.com>

---

v2: Improve commit message
---
 drivers/gpu/drm/imx/parallel-display.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c
index a8aba0141ce7..3bf8e0a4803a 100644
--- a/drivers/gpu/drm/imx/parallel-display.c
+++ b/drivers/gpu/drm/imx/parallel-display.c
@@ -75,8 +75,10 @@ static int imx_pd_connector_get_modes(struct drm_connector *connector)
 		ret = of_get_drm_display_mode(np, &imxpd->mode,
 					      &imxpd->bus_flags,
 					      OF_USE_NATIVE_MODE);
-		if (ret)
+		if (ret) {
+			drm_mode_destroy(connector->dev, mode);
 			return ret;
+		}
 
 		drm_mode_copy(mode, &imxpd->mode);
 		mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
-- 
2.25.1