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[media] cx231xx: disable I2C errors during i2c_scan

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Otherwise, it would produce lots of useless messages like:
	cx231xx: cx231xx_send_usb_command: failed with status --32

After this patch, I2C scan will produce an useful report:

[ 9494.050807] cx231xx: i2c_scan: checking for I2C devices on port=0 ..
[ 9494.074928] cx231xx: i2c scan: Completed Checking for I2C devices on port=0.
[ 9494.074936] cx231xx: i2c_scan: checking for I2C devices on port=3 ..
[ 9494.098934] cx231xx: i2c scan: Completed Checking for I2C devices on port=3.
[ 9494.098942] cx231xx: i2c_scan: checking for I2C devices on port=2 ..
[ 9494.118440] cx231xx: i2c scan: Completed Checking for I2C devices on port=2.
[ 9494.118448] cx231xx: i2c_scan: checking for I2C devices on port=4 ..
[ 9494.141889] cx231xx: i2c scan: Completed Checking for I2C devices on port=4.

[ 9494.060182] cx231xx: i2c scan: found device @ 0x40  [???]
[ 9494.062953] cx231xx: i2c scan: found device @ 0x60  [colibri]
[ 9494.066071] cx231xx: i2c scan: found device @ 0x88  [hammerhead]
[ 9494.067383] cx231xx: i2c scan: found device @ 0x98  [???]
[ 9494.090113] cx231xx: i2c scan: found device @ 0xa0  [eeprom]
[ 9494.106463] cx231xx: i2c scan: found device @ 0x60  [colibri]
[ 9494.113762] cx231xx: i2c scan: found device @ 0xc0  [tuner]
[ 9494.121882] cx231xx: i2c scan: found device @ 0x20  [???]
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Mauro Carvalho Chehab
2014-11-01 10:06:12 -03:00
parent 0d88d0916b
commit 77e97ba2da
3 changed files with 8 additions and 1 deletions
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5
drivers/media/usb/cx231xx/cx231xx-i2c.c
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@@ -496,6 +496,9 @@ void cx231xx_do_i2c_scan(struct cx231xx *dev, int i2c_port)
if (!i2c_scan)
return;
/* Don't generate I2C errors during scan */
dev->i2c_scan_running = true;
memset(&client, 0, sizeof(client));
client.adapter = cx231xx_get_i2c_adap(dev, i2c_port);
@@ -512,6 +515,8 @@ void cx231xx_do_i2c_scan(struct cx231xx *dev, int i2c_port)
}
pr_info("i2c scan: Completed Checking for I2C devices on port=%d.\n",
i2c_port);
dev->i2c_scan_running = false;
}
/*