From: <gregkh@linuxfoundation.org>
To: w6rz@comcast.net, alexander.levin@microsoft.com,
gregkh@linuxfoundation.org, mchehab@s-opensource.com
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "media: [RESEND] media: dvb-frontends: Add delay to Si2168 restart" has been added to the 3.18-stable tree
Date: Thu, 22 Mar 2018 15:18:04 +0100 [thread overview]
Message-ID: <152172828410564@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
media: [RESEND] media: dvb-frontends: Add delay to Si2168 restart
to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
media-media-dvb-frontends-add-delay-to-si2168-restart.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From foo@baz Thu Mar 22 15:16:04 CET 2018
From: Ron Economos <w6rz@comcast.net>
Date: Mon, 11 Dec 2017 19:51:53 -0500
Subject: media: [RESEND] media: dvb-frontends: Add delay to Si2168 restart
From: Ron Economos <w6rz@comcast.net>
[ 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>
---
drivers/media/dvb-frontends/si2168.c | 3 +++
1 file changed, 3 insertions(+)
--- 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;
@@ -380,6 +382,7 @@ static int si2168_init(struct dvb_fronte
if (ret)
goto err;
+ udelay(100);
memcpy(cmd.args, "\x85", 1);
cmd.wlen = 1;
cmd.rlen = 1;
Patches currently in stable-queue which might be from w6rz@comcast.net are
queue-3.18/media-media-dvb-frontends-add-delay-to-si2168-restart.patch
reply other threads:[~2018-03-22 14:18 UTC|newest]
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