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[media] cx231xx: use 1 byte read for i2c scan 

Now cx231xx_i2c_check_for_device works like i2c_check_for_device of em28xx driver.

For me this fixes scanning of all ports but port 2.

Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Matthias Schwarzott 2014-11-01 17:19:21 -03:00 committed by Mauro Carvalho Chehab
parent 6ac825cb3e
commit 0d88d0916b
1 changed files with 4 additions and 3 deletions
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7
drivers/media/usb/cx231xx/cx231xx-i2c.c
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@ -350,14 +350,15 @@ static int cx231xx_i2c_check_for_device(struct i2c_adapter *i2c_adap,
struct cx231xx *dev = bus->dev;
struct cx231xx_i2c_xfer_data req_data;
int status = 0;
u8 buf[1];
/* prepare xfer_data struct */
req_data.dev_addr = msg->addr;
req_data.direction = msg->flags;
req_data.direction = I2C_M_RD;
req_data.saddr_len = 0;
req_data.saddr_dat = 0;
req_data.buf_size = 0;
req_data.p_buffer = NULL;
req_data.buf_size = 1;
req_data.p_buffer = buf;
/* usb send command */
status = dev->cx231xx_send_usb_command(bus, &req_data);