Commit e827931e authored by Michael Krufky's avatar Michael Krufky Committed by Mauro Carvalho Chehab
Browse files

V4L/DVB (7380): tuner-simple: warn if tuner can't be probed during attach 



Signed-off-by: default avatarMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent cac2b0eb

drivers/media/video/tuner-simple.c

+22 −0
Original line number Diff line number Diff line
@@ -987,6 +987,28 @@ struct dvb_frontend *simple_tuner_attach(struct dvb_frontend *fe, 
		return NULL;

	}



	/* If i2c_adap is set, check that the tuner is at the correct address.

	 * Otherwise, if i2c_adap is NULL, the tuner will be programmed directly

	 * by the digital demod via calc_regs.

	 */

	if (i2c_adap != NULL) {

		u8 b[1];

		struct i2c_msg msg = {

			.addr = i2c_addr, .flags = I2C_M_RD,

			.buf = b, .len = 1,

		};



		if (fe->ops.i2c_gate_ctrl)

			fe->ops.i2c_gate_ctrl(fe, 1);



		if (1 != i2c_transfer(i2c_adap, &msg, 1))

			tuner_warn("unable to probe %s, proceeding anyway.",

				   tuners[type].name);



		if (fe->ops.i2c_gate_ctrl)

			fe->ops.i2c_gate_ctrl(fe, 0);

	}



	mutex_lock(&tuner_simple_list_mutex);



	instance = hybrid_tuner_request_state(struct tuner_simple_priv, priv,