linux-kernel - Re: [PATCH 02/14] HID: uHID: implement .raw

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Message-ID: <CANq1E4TiQbVspwm9-Ag3Epaq34R+a-s6Mh3E3=5xcprnyMBiaw@mail.gmail.com>
Date:	Wed, 12 Feb 2014 11:18:35 +0100
From:	David Herrmann <dh.herrmann@...il.com>
To:	Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc:	Benjamin Tissoires <benjamin.tissoires@...il.com>,
	Jiri Kosina <jkosina@...e.cz>,
	"open list:HID CORE LAYER" <linux-input@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 02/14] HID: uHID: implement .raw_request

Hi

On Mon, Feb 10, 2014 at 6:58 PM, Benjamin Tissoires
<benjamin.tissoires@...hat.com> wrote:
> uHID is missing a SET_REPORT protocol implementation, but as
> .hid_get_raw_report() as been removed from struct hid_device,
> there were no means to access GET_REPORT in uhid.
>
> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
> ---
>  drivers/hid/uhid.c | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
>
> diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c
> index b6de903..60acee4 100644
> --- a/drivers/hid/uhid.c
> +++ b/drivers/hid/uhid.c
> @@ -250,6 +250,21 @@ static int uhid_hid_output_report(struct hid_device *hid, __u8 *buf,
>         return uhid_hid_output_raw(hid, buf, count, HID_OUTPUT_REPORT);
>  }
>
> +static int uhid_raw_request(struct hid_device *hid, unsigned char reportnum,
> +                           __u8 *buf, size_t len, unsigned char rtype,
> +                           int reqtype)
> +{
> +       switch (reqtype) {
> +       case HID_REQ_GET_REPORT:
> +               return uhid_hid_get_raw(hid, reportnum, buf, len, rtype);
> +       case HID_REQ_SET_REPORT:
> +               /* TODO: implement proper SET_REPORT functionality */
> +               return -ENOSYS;

Looks good. I will try to implement it today and send a patch.

Reviewed-by: David Herrmann <dh.herrmann@...il.com>

Thanks
David

> +       default:
> +               return -EIO;
> +       }
> +}
> +
>  static struct hid_ll_driver uhid_hid_driver = {
>         .start = uhid_hid_start,
>         .stop = uhid_hid_stop,
> @@ -257,6 +272,7 @@ static struct hid_ll_driver uhid_hid_driver = {
>         .close = uhid_hid_close,
>         .parse = uhid_hid_parse,
>         .output_report = uhid_hid_output_report,
> +       .raw_request = uhid_raw_request,
>  };
>
>  #ifdef CONFIG_COMPAT
> --
> 1.8.3.1
>
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