Putting the dib7000p device in and out of sleep can trigger a race,
causing the usb device to stall (-EPIPE), resulting in i2c errors:
DiB0070 I2C write failed
DiB0070 I2C read failed
As a workaround, do not put the device to sleep
Perhaps the dib8000/9000 need the same workaround
---
drivers/media/usb/dvb-usb/dib0700_devices.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/media/usb/dvb-usb/dib0700_devices.c b/drivers/media/usb/dvb-usb/dib0700_devices.c
index 1179842..2a3093e 100644
--- a/drivers/media/usb/dvb-usb/dib0700_devices.c
+++ b/drivers/media/usb/dvb-usb/dib0700_devices.c
@@ -774,6 +774,7 @@ static int dib7070_tuner_reset(struct dvb_frontend *fe, int onoff)
static int dib7070_tuner_sleep(struct dvb_frontend *fe, int onoff)
{
deb_info("sleep: %d", onoff);
+ if (onoff) return 0;
return dib7000p_set_gpio(fe, 9, 0, onoff);
}
--
1.7.9.5