From: Philipp Zabel <p.zabel@pengutronix.de>
Date: Tue, 17 Oct 2017 11:05:11 +0000 (+0200)
Subject: media: tc358743: validate lane count
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=9d39e46bdd9df945669a9039660a3194bdc8d0ac;p=openwrt%2Fstaging%2Fblogic.git

media: tc358743: validate lane count

The TC358743 does not support more than 4 data lanes. Check that the
lane count is valid.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---

diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c
index 0b65096613d9..d3cf016ad0a0 100644
--- a/drivers/media/i2c/tc358743.c
+++ b/drivers/media/i2c/tc358743.c
@@ -1941,6 +1941,11 @@ static int tc358743_probe_of(struct tc358743_state *state)
 		goto free_endpoint;
 	}
 
+	if (endpoint->bus.mipi_csi2.num_data_lanes > 4) {
+		dev_err(dev, "invalid number of lanes\n");
+		goto free_endpoint;
+	}
+
 	state->bus = endpoint->bus.mipi_csi2;
 
 	ret = clk_prepare_enable(refclk);