[PATCH AUTOSEL for 4.15 23/78] media: [RESEND] media: dvb-frontends: Add delay to Si2168 restart

[Sasha Levin]

From: Ron Economos 

[ 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 
Signed-off-by: Mauro Carvalho Chehab 
Signed-off-by: Sasha Levin 
---
 drivers/media/dvb-frontends/si2168.c | 3 +++
 1 file changed, 3 insertions(+)

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 
+
 #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;
-- 
2.14.1

[PATCH AUTOSEL for 4.15 23/78] media: [RESEND] media: dvb-frontends: Add delay to Si2168 restart

[Sasha Levin]

From: Ron Economos 

[ 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 
Signed-off-by: Mauro Carvalho Chehab 
Signed-off-by: Sasha Levin 
---
 drivers/media/dvb-frontends/si2168.c | 3 +++
 1 file changed, 3 insertions(+)

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 
+
 #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;
-- 
2.14.1