| Message ID | 20200219211419.67063-1-git@reversity.org |
|---|---|
| State | New |
| Headers | show |
| Series | media: rtl28xxu: add missing sleep before probing slave demod | expand |
diff --git a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c index c6881a1b3232..2080f6ef4be1 100644 --- a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c +++ b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c @@ -552,6 +552,9 @@ static int rtl2832u_read_config(struct dvb_usb_device *d) if (ret) goto err; + /* slave demod needs some time to wake up */ + msleep(20); + /* check slave answers */ ret = rtl28xxu_ctrl_msg(d, &req_mn88472); if (ret == 0 && buf[0] == 0x02) {
Slave demod needs some time to wake up otherwise it may not respond to the following probe commands. This problem manifested randomly on my Astrometa DVB-T2 dongle. Signed-off-by: Mario Hros <git@reversity.org> --- drivers/media/usb/dvb-usb-v2/rtl28xxu.c | 3 +++ 1 file changed, 3 insertions(+)