Patch "saa7134: Unchecked i2c_transfer function result fixed" has been added to the 6.1-stable tree

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This is a note to let you know that I've just added the patch titled

    saa7134: Unchecked i2c_transfer function result fixed

to the 6.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     saa7134-unchecked-i2c_transfer-function-result-fixed.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit ae09265eaa2a5840b878d13d3abb30d983581083
Author: Aleksandr Burakov <a.burakov@xxxxxxxxxxxx>
Date:   Fri Feb 16 15:40:06 2024 +0300

    saa7134: Unchecked i2c_transfer function result fixed
    
    [ Upstream commit 9d8683b3fd93f0e378f24dc3d9604e5d7d3e0a17 ]
    
    Return value of function 'i2c_transfer' is not checked that
    may cause undefined behaviour.
    
    Found by Linux Verification Center (linuxtesting.org) with SVACE.
    
    Fixes: 2cf36ac44730 ("[PATCH] v4l: 656: added support for the following cards")
    Signed-off-by: Aleksandr Burakov <a.burakov@xxxxxxxxxxxx>
    Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/media/pci/saa7134/saa7134-dvb.c b/drivers/media/pci/saa7134/saa7134-dvb.c
index 9c6cfef03331d..a66df6adfaad8 100644
--- a/drivers/media/pci/saa7134/saa7134-dvb.c
+++ b/drivers/media/pci/saa7134/saa7134-dvb.c
@@ -466,7 +466,9 @@ static int philips_europa_tuner_sleep(struct dvb_frontend *fe)
 	/* switch the board to analog mode */
 	if (fe->ops.i2c_gate_ctrl)
 		fe->ops.i2c_gate_ctrl(fe, 1);
-	i2c_transfer(&dev->i2c_adap, &analog_msg, 1);
+	if (i2c_transfer(&dev->i2c_adap, &analog_msg, 1) != 1)
+		return -EIO;
+
 	return 0;
 }
 
@@ -1018,7 +1020,9 @@ static int md8800_set_voltage2(struct dvb_frontend *fe,
 	else
 		wbuf[1] = rbuf & 0xef;
 	msg[0].len = 2;
-	i2c_transfer(&dev->i2c_adap, msg, 1);
+	if (i2c_transfer(&dev->i2c_adap, msg, 1) != 1)
+		return -EIO;
+
 	return 0;
 }
 




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