From: Devin Heitmueller Date: Sun, 16 Nov 2008 03:44:52 +0000 (-0300) Subject: V4L/DVB (9634): Make sure the i2c gate is open before powering down tuner X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=41286d972530b7a47acb48376d714b6b121a6c22;p=linux-beck.git V4L/DVB (9634): Make sure the i2c gate is open before powering down tuner It is not safe to assume that the i2c gate will be open before issuing the command to power down the tuner. In fact, many demods only open the gate long enough to issue the tuning command. This fix allows power management to work properly for those tuners behind an i2c gate (in my case the problem was with the HVR-950Q) Signed-off-by: Devin Heitmueller Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c index b38cebe3ac1c..7a421e9dba5a 100644 --- a/drivers/media/dvb/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb/dvb-core/dvb_frontend.c @@ -585,6 +585,8 @@ restart: if (fe->ops.set_voltage) fe->ops.set_voltage(fe, SEC_VOLTAGE_OFF); if (fe->ops.tuner_ops.sleep) { + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); fe->ops.tuner_ops.sleep(fe); if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);