linux-kernel - [PATCH] V4L/DVB: tea6415c: return -EIO if i2c_check

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Message-Id: <1288603539.3831.2.camel@mola>
Date:	Mon, 01 Nov 2010 17:25:39 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	Mauro Carvalho Chehab <mchehab@...radead.org>,
	Hans Verkuil <hverkuil@...all.nl>, linux-media@...r.kernel.org
Subject: [PATCH] V4L/DVB: tea6415c: return -EIO if i2c_check_functionality
	fails

If the adapter does not support I2C_FUNC_SMBUS_WRITE_BYTE,
return -EIO instead of 0.

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 drivers/media/video/tea6415c.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/media/video/tea6415c.c b/drivers/media/video/tea6415c.c
index 3e99cea..19621ed 100644
--- a/drivers/media/video/tea6415c.c
+++ b/drivers/media/video/tea6415c.c
@@ -148,7 +148,7 @@ static int tea6415c_probe(struct i2c_client *client,
 
 	/* let's see whether this adapter can support what we need */
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WRITE_BYTE))
-		return 0;
+		return -EIO;
 
 	v4l_info(client, "chip found @ 0x%x (%s)\n",
 			client->addr << 1, client->adapter->name);
-- 
1.7.2



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