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SubjectRe: [PATCH] HID: quirks: Add no_init_reports for AKAI midi controller
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On Wed, 2016-01-27 at 22:31 +0100, Jiri Kosina wrote:
> On Wed, 27 Jan 2016, Stafford Horne wrote:
>
> > The midi controller times-out while initializing reports, this
> > causes boot to take an extra 10 seconds. The device descriptor
> > advertises that it has an internal HID device but seems to not
> > actually do anything useful.
> >
> > Signed-off-by: Stafford Horne <shorne@gmail.com>
> > ---
> > drivers/hid/hid-ids.h | 3 +++
> > drivers/hid/usbhid/hid-quirks.c | 1 +
> > 2 files changed, 4 insertions(+)
> >
> > diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
> > index b6ff6e7..3dfb166 100644
> > --- a/drivers/hid/hid-ids.h
> > +++ b/drivers/hid/hid-ids.h
> > @@ -61,6 +61,9 @@
> > #define USB_VENDOR_ID_AIREN 0x1a2c
> > #define USB_DEVICE_ID_AIREN_SLIMPLUS 0x0002
> >
> > +#define USB_VENDOR_ID_AKAI 0x2011
> > +#define USB_DEVICE_ID_AKAI_MPKMINI2 0x0715
> > +
> > #define USB_VENDOR_ID_ALCOR 0x058f
> > #define USB_DEVICE_ID_ALCOR_USBRS232 0x9720
> >
> > diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c
> > index 7dd0953..055e740 100644
> > --- a/drivers/hid/usbhid/hid-quirks.c
> > +++ b/drivers/hid/usbhid/hid-quirks.c
> > @@ -55,6 +55,7 @@ static const struct hid_blacklist {
> > { USB_VENDOR_ID_TOUCHPACK, USB_DEVICE_ID_TOUCHPACK_RTS, HID_QUIRK_MULTI_INPUT },
> >
> > { USB_VENDOR_ID_AIREN, USB_DEVICE_ID_AIREN_SLIMPLUS, HID_QUIRK_NOGET },
> > + { USB_VENDOR_ID_AKAI, USB_DEVICE_ID_AKAI_MPKMINI2, HID_QUIRK_NO_INIT_REPORTS },
>
> If the (proclaimed) HID device is completely silent, wouldn't
> HID_QUIRK_IGNORE be more appropriate?

If it really is impossible to use the device.
That quirk would preclude any use you are not aware of with almost
no added benefit. I would take the patch as is.

Regards
Oliver



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