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Commit 3b37a15c authored by Manu Abraham's avatar Manu Abraham Committed by Mauro Carvalho Chehab
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V4L/DVB (9346): Optimization: Enable gate in a symmetric/disciplined way, 



rather than implementing different ways leading to confusion.

This allows multiple gate_enable/disable's in the tuner_read/write
functions, thereby lesser number of I/O operations throughout,
eventually leading to better results. As a side effect demods that
detect the STOP bit for auto closing of the gate can be avoided, thereby
a very minimal gain in disabling the auto detect feature as well.
Improves readability on the device control.

Signed-off-by: default avatarManu Abraham <manu@linuxtv.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent f7378995

drivers/media/dvb/dvb-core/dvb_frontend.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -223,6 +223,8 @@ static void dvb_frontend_init(struct dvb_frontend *fe) 
	if (fe->ops.init)

	if (fe->ops.init)

		fe->ops.init(fe);

		fe->ops.init(fe);

	if (fe->ops.tuner_ops.init) {

	if (fe->ops.tuner_ops.init) {

		if (fe->ops.i2c_gate_ctrl)

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

		fe->ops.tuner_ops.init(fe);

		fe->ops.tuner_ops.init(fe);

		if (fe->ops.i2c_gate_ctrl)

		if (fe->ops.i2c_gate_ctrl)

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

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