From: Chris Pascoe <c.pascoe@itee.uq.edu.au>
Date: Mon, 19 Nov 2007 05:48:27 +0000 (-0300)
Subject: V4L/DVB (6625): CXUSB: i2c transfer failure notification
X-Git-Tag: firefly_0821_release~23728^2~347
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=13e001dfe3aeb9e7b05445af76e5b47235e81285;p=firefly-linux-kernel-4.4.55.git

V4L/DVB (6625): CXUSB: i2c transfer failure notification

The i2c master_xfer routine should return a negative result if not all
transfers completed successfully.

Signed-off-by: Chris Pascoe <c.pascoe@itee.uq.edu.au>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
---

diff --git a/drivers/media/dvb/dvb-usb/cxusb.c b/drivers/media/dvb/dvb-usb/cxusb.c
index b4a3f7baf1b7..86fbd6c73ea9 100644
--- a/drivers/media/dvb/dvb-usb/cxusb.c
+++ b/drivers/media/dvb/dvb-usb/cxusb.c
@@ -132,7 +132,7 @@ static int cxusb_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
 	}
 
 	mutex_unlock(&d->i2c_mutex);
-	return i;
+	return i == num ? num : -EREMOTEIO;
 }
 
 static u32 cxusb_i2c_func(struct i2c_adapter *adapter)