Patch "[media] sur40: lower poll interval to fix occasional FPS drops to ~56 FPS" has been added to the 4.4-stable tree

Patch "[media] sur40: lower poll interval to fix occasional FPS drops to ~56 FPS" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    [media] sur40: lower poll interval to fix occasional FPS drops to ~56 FPS

to the 4.4-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:
     sur40-lower-poll-interval-to-fix-occasional-fps-drops-to-56-fps.patch
and it can be found in the queue-4.4 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 af766ee005c496b8567976dc3eed7676443ed6de Mon Sep 17 00:00:00 2001
From: Florian Echtler <floe@butterbrot.org>
Date: Tue, 31 May 2016 17:15:32 -0300
Subject: [media] sur40: lower poll interval to fix occasional FPS drops to ~56 FPS

From: Florian Echtler <floe@butterbrot.org>

commit af766ee005c496b8567976dc3eed7676443ed6de upstream.

The framerate sometimes drops below 60 Hz if the poll interval is too high.
Lowering it to the minimum of 1 ms fixes this.

Signed-off-by: Martin Kaltenbrunner <modin@yuri.at>
Signed-off-by: Florian Echtler <floe@butterbrot.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/input/touchscreen/sur40.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/input/touchscreen/sur40.c
+++ b/drivers/input/touchscreen/sur40.c
@@ -126,7 +126,7 @@ struct sur40_image_header {
 #define VIDEO_PACKET_SIZE  16384
 
 /* polling interval (ms) */
-#define POLL_INTERVAL 4
+#define POLL_INTERVAL 1
 
 /* maximum number of contacts FIXME: this is a guess? */
 #define MAX_CONTACTS 64


Patches currently in stable-queue which might be from floe@butterbrot.org are

queue-4.4/sur40-fix-occasional-oopses-on-device-close.patch
queue-4.4/sur40-lower-poll-interval-to-fix-occasional-fps-drops-to-56-fps.patch