linux-kernel - [PATCH -next] drm/mcde: dsi: Fix return value check in dev

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200428141459.87624-1-weiyongjun1@huawei.com>
Date:   Tue, 28 Apr 2020 14:14:59 +0000
From:   Wei Yongjun <weiyongjun1@...wei.com>
To:     Linus Walleij <linus.walleij@...aro.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
CC:     Wei Yongjun <weiyongjun1@...wei.com>,
        <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        <kernel-janitors@...r.kernel.org>
Subject: [PATCH -next] drm/mcde: dsi: Fix return value check in dev_err()

In case of error, the function of_drm_find_bridge() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should be
replaced with NULL test.

Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
---
 drivers/gpu/drm/mcde/mcde_dsi.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/mcde/mcde_dsi.c b/drivers/gpu/drm/mcde/mcde_dsi.c
index 7af5ebb0c436..e705afc08c4e 100644
--- a/drivers/gpu/drm/mcde/mcde_dsi.c
+++ b/drivers/gpu/drm/mcde/mcde_dsi.c
@@ -1073,10 +1073,9 @@ static int mcde_dsi_bind(struct device *dev, struct device *master,
 			panel = NULL;
 
 			bridge = of_drm_find_bridge(child);
-			if (IS_ERR(bridge)) {
-				dev_err(dev, "failed to find bridge (%ld)\n",
-					PTR_ERR(bridge));
-				return PTR_ERR(bridge);
+			if (!bridge) {
+				dev_err(dev, "failed to find bridge\n");
+				return -EINVAL;
 			}
 		}
 	}