diff options
| author | Mario Hros <[email protected]> | 2020-02-19 22:14:19 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <[email protected]> | 2020-03-02 10:48:06 +0100 |
| commit | 62d19285312004bf5980d9b6c95c6bd378612f06 (patch) | |
| tree | adcbe5df8e76ce4e9f07fee865263cfc158dcfd8 | |
| parent | 806d06161af045dba29f3c7747550c93b2ea3ca9 (diff) | |
media: rtl28xxu: add missing sleep before probing slave demod
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 <[email protected]>
Signed-off-by: Sean Young <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
| -rw-r--r-- | drivers/media/usb/dvb-usb-v2/rtl28xxu.c | 3 |
1 files changed, 3 insertions, 0 deletions
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 @@ tuner_found: 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) { |