linux-kernel - Re: [PATCH] HID: rmi: Disable populating F30 when the touchpad has physical buttons

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Date:	Tue, 16 Jun 2015 17:26:54 -0400
From:	Benjamin Tissoires <benjamin.tissoires@...hat.com>
To:	Andrew Duggan <aduggan@...aptics.com>
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jiri Kosina <jkosina@...e.cz>,
	Peter Hutterer <peter.hutterer@...-t.net>
Subject: Re: [PATCH] HID: rmi: Disable populating F30 when the touchpad has
 physical buttons

Hi Andrew,

On Jun 16 2015 or thereabouts, Andrew Duggan wrote:
> Physical buttons do not use F30 to report their state and in some cases the
> data reported in F30 is incorrect and inconsistent with what is reported by
> the HID descriptor. When physical buttons are present, ignore F30 and let
> hid-input report buttons based on what is defined in the HID descriptor.
> 
> Signed-off-by: Andrew Duggan <aduggan@...aptics.com>
> ---

Thanks for the patch.
This one is related to:
https://bugzilla.redhat.com/show_bug.cgi?id=1227891
and http://bugs.freedesktop.org/show_bug.cgi?id=90356

Andrew, can you confirm that with this patch, INPUT_PROP_BUTTONPAD is not
set for the Razer Blade touchpad?

If so, then this is:
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>

Cheers,
Benjamin

>  drivers/hid/hid-rmi.c | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c
> index 368ffdf..721f7f9 100644
> --- a/drivers/hid/hid-rmi.c
> +++ b/drivers/hid/hid-rmi.c
> @@ -1013,6 +1013,7 @@ static int rmi_populate_f30(struct hid_device *hdev)
>  
>  static int rmi_populate(struct hid_device *hdev)
>  {
> +	struct rmi_data *data = hid_get_drvdata(hdev);
>  	int ret;
>  
>  	ret = rmi_scan_pdt(hdev);
> @@ -1033,9 +1034,11 @@ static int rmi_populate(struct hid_device *hdev)
>  		return ret;
>  	}
>  
> -	ret = rmi_populate_f30(hdev);
> -	if (ret)
> -		hid_warn(hdev, "Error while initializing F30 (%d).\n", ret);
> +	if (!(data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS)) {
> +		ret = rmi_populate_f30(hdev);
> +		if (ret)
> +			hid_warn(hdev, "Error while initializing F30 (%d).\n", ret);
> +	}
>  
>  	return 0;
>  }
> -- 
> 2.1.4
> 
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