linux-kernel - [PATCH v3 3/3] media: i2c: ov5640: Fail probe on unsupported bus

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Message-Id: <20200813171337.5540-4-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date:   Thu, 13 Aug 2020 18:13:37 +0100
From:   Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
To:     Steve Longerbeam <slongerbeam@...il.com>,
        Jacopo Mondi <jacopo+renesas@...ndi.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Paul <paul.kocialkowski@...tlin.com>,
        Hugues Fruchet <hugues.fruchet@...com>
Cc:     linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-renesas-soc@...r.kernel.org,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Prabhakar <prabhakar.csengg@...il.com>
Subject: [PATCH v3 3/3] media: i2c: ov5640: Fail probe on unsupported bus_type

Fail probe if unsupported bus_type is detected.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
 drivers/media/i2c/ov5640.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index 160d2857352a..3191e2b223c3 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -3078,6 +3078,13 @@ static int ov5640_probe(struct i2c_client *client)
 		return ret;
 	}
 
+	if (sensor->ep.bus_type != V4L2_MBUS_PARALLEL &&
+	    sensor->ep.bus_type != V4L2_MBUS_CSI2_DPHY &&
+	    sensor->ep.bus_type != V4L2_MBUS_BT656) {
+		dev_err(dev, "Unsupported bus type %d\n", sensor->ep.bus_type);
+		return -EINVAL;
+	}
+
 	/* get system clock (xclk) */
 	sensor->xclk = devm_clk_get(dev, "xclk");
 	if (IS_ERR(sensor->xclk)) {
-- 
2.17.1