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Commit 812fe6d9 authored by Hans-Frieder Vogt's avatar Hans-Frieder Vogt Committed by Mauro Carvalho Chehab
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[media] af9035: i2c read fix 



Enable i2c read requests.

I2C read fix (necessary e.g. for mxl5007t tuner, because it
sends a 2 bytes for a read request, thus msg[0].len != msg[1].len).

Signed-off-by: default avatarHans-Frieder Vogt <hfvogt@gmx.net>
Signed-off-by: default avatarAntti Palosaari <crope@iki.fi>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 8e8a5ac7

drivers/media/dvb/dvb-usb/af9035.c

+1 −10
Original line number Diff line number Diff line
@@ -209,24 +209,15 @@ static int af9035_i2c_master_xfer(struct i2c_adapter *adap, 
					msg[1].len);

		} else {

			/* I2C */

#if 0

			/*

			 * FIXME: Keep that code. It should work but as it is

			 * not tested I left it disabled and return -EOPNOTSUPP

			 * for the sure.

			 */

			u8 buf[4 + msg[0].len];

			struct usb_req req = { CMD_I2C_RD, 0, sizeof(buf),

					buf, msg[1].len, msg[1].buf };

			buf[0] = msg[0].len;

			buf[0] = msg[1].len;

			buf[1] = msg[0].addr << 1;

			buf[2] = 0x01;

			buf[3] = 0x00;

			memcpy(&buf[4], msg[0].buf, msg[0].len);

			ret = af9035_ctrl_msg(d->udev, &req);

#endif

			pr_debug("%s: I2C operation not supported\n", __func__);

			ret = -EOPNOTSUPP;

		}

	} else if (num == 1 && !(msg[0].flags & I2C_M_RD)) {

		if (msg[0].len > 40) {