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Groups > linux.kernel > #1366643 > unrolled thread

[PATCH] HID: multitouch: Synchronize MT frame on reset_resume

Started byGabriele Mazzotta <gabriele.mzt@gmail.com>
First post2016-03-29 22:20 +0200
Last post2016-04-01 11:40 +0200
Articles 4 — 4 participants

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  [PATCH] HID: multitouch: Synchronize MT frame on reset_resume Gabriele Mazzotta <gabriele.mzt@gmail.com> - 2016-03-29 22:20 +0200
    Re: [PATCH] HID: multitouch: Synchronize MT frame on reset_resume Benson Leung <bleung@chromium.org> - 2016-03-29 22:40 +0200
    Re: [PATCH] HID: multitouch: Synchronize MT frame on reset_resume Benjamin Tissoires <benjamin.tissoires@redhat.com> - 2016-03-30 09:50 +0200
    Re: [PATCH] HID: multitouch: Synchronize MT frame on reset_resume Jiri Kosina <jikos@kernel.org> - 2016-04-01 11:40 +0200

#1366643 — [PATCH] HID: multitouch: Synchronize MT frame on reset_resume

FromGabriele Mazzotta <gabriele.mzt@gmail.com>
Date2016-03-29 22:20 +0200
Subject[PATCH] HID: multitouch: Synchronize MT frame on reset_resume
Message-ID<ri8hk-2Tk-35@gated-at.bofh.it>
input_mt_get_slot_by_key() requires input_mt_sync_frame() to be called
at each frame. Do it when releasing the touches, or else we won't get
a proper slot number after mt_reset_resume().

Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
---
 drivers/hid/hid-multitouch.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 25d3c43..c741f5e 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1169,6 +1169,7 @@ static void mt_release_contacts(struct hid_device *hid)
 							   MT_TOOL_FINGER,
 							   false);
 			}
+			input_mt_sync_frame(input_dev);
 			input_sync(input_dev);
 		}
 	}
-- 
2.8.0.rc3

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#1366688

FromBenson Leung <bleung@chromium.org>
Date2016-03-29 22:40 +0200
Message-ID<ri8AG-32i-7@gated-at.bofh.it>
In reply to#1366643
Hi Gabriele,

Thanks for the fix!

On Tue, Mar 29, 2016 at 1:10 PM, Gabriele Mazzotta
<gabriele.mzt@gmail.com> wrote:
> input_mt_get_slot_by_key() requires input_mt_sync_frame() to be called
> at each frame. Do it when releasing the touches, or else we won't get
> a proper slot number after mt_reset_resume().
>
> Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>

Reviewed-by: Benson Leung <bleung@chromium.org>

> ---
>  drivers/hid/hid-multitouch.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
> index 25d3c43..c741f5e 100644
> --- a/drivers/hid/hid-multitouch.c
> +++ b/drivers/hid/hid-multitouch.c
> @@ -1169,6 +1169,7 @@ static void mt_release_contacts(struct hid_device *hid)
>                                                            MT_TOOL_FINGER,
>                                                            false);
>                         }
> +                       input_mt_sync_frame(input_dev);
>                         input_sync(input_dev);
>                 }
>         }
> --
> 2.8.0.rc3
>



-- 
Benson Leung
Senior Software Engineer, Chrom* OS
bleung@chromium.org

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#1366962

FromBenjamin Tissoires <benjamin.tissoires@redhat.com>
Date2016-03-30 09:50 +0200
Message-ID<rij35-27H-21@gated-at.bofh.it>
In reply to#1366643
On Mar 29 2016 or thereabouts, Gabriele Mazzotta wrote:
> input_mt_get_slot_by_key() requires input_mt_sync_frame() to be called
> at each frame. Do it when releasing the touches, or else we won't get
> a proper slot number after mt_reset_resume().
> 
> Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>

Thanks for the fix (I should have spot that earlier :( )

Reviewed-by: Benjamin TIssoires <benjamin.tissoires@redhat.com>

Cheers,
Benjamin

> ---
>  drivers/hid/hid-multitouch.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
> index 25d3c43..c741f5e 100644
> --- a/drivers/hid/hid-multitouch.c
> +++ b/drivers/hid/hid-multitouch.c
> @@ -1169,6 +1169,7 @@ static void mt_release_contacts(struct hid_device *hid)
>  							   MT_TOOL_FINGER,
>  							   false);
>  			}
> +			input_mt_sync_frame(input_dev);
>  			input_sync(input_dev);
>  		}
>  	}
> -- 
> 2.8.0.rc3
> 

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#1369130

FromJiri Kosina <jikos@kernel.org>
Date2016-04-01 11:40 +0200
Message-ID<rj3IB-2lk-3@gated-at.bofh.it>
In reply to#1366643
On Tue, 29 Mar 2016, Gabriele Mazzotta wrote:

> input_mt_get_slot_by_key() requires input_mt_sync_frame() to be called
> at each frame. Do it when releasing the touches, or else we won't get
> a proper slot number after mt_reset_resume().
> 
> Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>

Queued for 4.6. Thanks,

-- 
Jiri Kosina
SUSE Labs

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