lkml.org 
[lkml]   [2012]   [Apr]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH v3 5/6] hid-multitouch: Switch to device groups
From
On Mon, Apr 30, 2012 at 20:30, Henrik Rydberg <rydberg@euromail.se> wrote:
>> I remarked a small regression in this patch: the detection of the
>> serial protocol is not handled anymore. I was indeed relying on the
>> fact that the parameter "id" in mt_probe was null to know that the
>> device was not already in the list of known devices.
>
> I see. Will this suffice?

Yes, but I'd rather do the test against either id->product or
id->driver_data as we may use HID_ANY_ID for vendors specific
handling. For instance, I had the confirmation from EETI (eGalax) that
they will always use the same protocol for their usb products, thus
the same quirks could be handled by HID_DEVICE(BUS_USB,
HID_GROUP_MULTITOUCH, USB_VENDOR_ID_DWAV, HID_ANY_ID).

Thanks,
Benjamin

>
> diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
> index 125c1e7..507981e 100644
> --- a/drivers/hid/hid-multitouch.c
> +++ b/drivers/hid/hid-multitouch.c
> @@ -673,8 +673,8 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
>        if (ret)
>                goto fail;
>
> -       if (!id && td->touches_by_report == 1) {
> -               /* the device has been sent by hid-generic */
> +       /* unknown serial devices need special quirks */
> +       if ((!id || id->product == HID_ANY_ID) && td->touches_by_report == 1) {
>                mtclass = &td->mtclass;
>                mtclass->quirks |= MT_QUIRK_ALWAYS_VALID;
>                mtclass->quirks &= ~MT_QUIRK_NOT_SEEN_MEANS_UP;
>
> Cheers,
> Henrik
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2012-04-30 21:01    [W:0.084 / U:0.796 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site