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@xxxxxxxxxxxxxxx> know about it.
>From af766ee005c496b8567976dc3eed7676443ed6de Mon Sep 17 00:00:00 2001
From: Florian Echtler <floe@xxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxx>
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@xxxxxxx>
Signed-off-by: Florian Echtler <floe@xxxxxxxxxxxxxx>
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxxxxxxxx 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
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