diff options
| author | Ron Economos <w6rz@comcast.net> | 2017-12-11 19:51:53 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-24 11:00:23 +0100 |
| commit | 034371788a56304c2836eb58706b9e2f04387359 (patch) | |
| tree | 54490a2c00ac2f71589f5c83b6e7f4de99738410 /drivers/media | |
| parent | bb32772bc409f3cb0a40c318a5dda37f177107c3 (diff) | |
| download | linux-rt-034371788a56304c2836eb58706b9e2f04387359.tar.gz | |
media: [RESEND] media: dvb-frontends: Add delay to Si2168 restart
[ Upstream commit 380a6c86457573aa42d27ae11e025eb25941a0b7 ]
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>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/media')
| -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 20b4a659e2e4..0fe69f79a24d 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; @@ -378,6 +380,7 @@ 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; |