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| author |   Ron Economos <w6rz@comcast.net> | 2017-12-11 19:51:53 -0500 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-12-14 12:22:23 -0500 |
| commit | 380a6c86457573aa42d27ae11e025eb25941a0b7 (patch) | |
| tree | a74f7be25c27a06770c7ee5df700e0113d2d657c /drivers/media/dvb-frontends/si2168.c | |
| parent | media: ddbridge: stv09xx: detach frontends on lnb failure (diff) | |
| download | linux-dev-380a6c86457573aa42d27ae11e025eb25941a0b7.tar.xz linux-dev-380a6c86457573aa42d27ae11e025eb25941a0b7.zip | |
media: [RESEND] media: dvb-frontends: Add delay to Si2168 restart
On faster CPUs a delay is required after the resume command and the restart command. Without the delay, the restart command often returns -EREMOTEIO and the Si2168 does not restart.
Note that this patch fixes the same issue as https://patchwork.linuxtv.org/patch/44304/, but I believe my udelay() fix addresses the actual problem.
Signed-off-by: Ron Economos <w6rz@comcast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/dvb-frontends/si2168.c')
| -rw-r--r-- | drivers/media/dvb-frontends/si2168.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/si2168.c b/drivers/media/dvb-frontends/si2168.c index 41d9c513b7e8..539399dac551 100644 --- a/drivers/media/dvb-frontends/si2168.c +++ b/drivers/media/dvb-frontends/si2168.c @@ -14,6 +14,8 @@ * GNU General Public License for more details. */ +#include <linux/delay.h> + #include "si2168_priv.h" static const struct dvb_frontend_ops si2168_ops; @@ -435,6 +437,7 @@ static int si2168_init(struct dvb_frontend *fe) if (ret) goto err; + udelay(100); memcpy(cmd.args, "\x85", 1); cmd.wlen = 1; cmd.rlen = 1; |