linux-kernel - [PATCH v3 18/19] media: i2c: rdacm20: Check return values

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Date:   Fri, 19 Mar 2021 17:41:47 +0100
From:   Jacopo Mondi <jacopo+renesas@...ndi.org>
To:     kieran.bingham+renesas@...asonboard.com,
        laurent.pinchart+renesas@...asonboard.com,
        niklas.soderlund+renesas@...natech.se, geert@...ux-m68k.org
Cc:     Jacopo Mondi <jacopo+renesas@...ndi.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>
Subject: [PATCH v3 18/19] media: i2c: rdacm20: Check return values

The camera module initialization routine does not check the return
value of a few functions. Fix that.

Reviewed-by: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Signed-off-by: Jacopo Mondi <jacopo+renesas@...ndi.org>
---
 drivers/media/i2c/rdacm20.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/media/i2c/rdacm20.c b/drivers/media/i2c/rdacm20.c
index d3a2520c4113..7ed3866b5335 100644
--- a/drivers/media/i2c/rdacm20.c
+++ b/drivers/media/i2c/rdacm20.c
@@ -447,11 +447,16 @@ static int rdacm20_init(struct v4l2_subdev *sd, unsigned int val)
 	 *  Ensure that we have a good link configuration before attempting to
 	 *  identify the device.
 	 */
-	max9271_configure_i2c(&dev->serializer, MAX9271_I2CSLVSH_469NS_234NS |
-						MAX9271_I2CSLVTO_1024US |
-						MAX9271_I2CMSTBT_105KBPS);
+	ret = max9271_configure_i2c(&dev->serializer,
+				    MAX9271_I2CSLVSH_469NS_234NS |
+				    MAX9271_I2CSLVTO_1024US |
+				    MAX9271_I2CMSTBT_105KBPS);
+	if (ret)
+		return ret;
 
-	max9271_configure_gmsl_link(&dev->serializer);
+	ret = max9271_configure_gmsl_link(&dev->serializer);
+	if (ret)
+		return ret;
 
 	ret = max9271_verify_id(&dev->serializer);
 	if (ret < 0)
-- 
2.30.0