Re: [PATCH] HID: quirks: Add no_init_reports for AKAI midi controller

[Stafford Horne]

On Wed, 27 Jan 2016, 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@xxxxxxxxx>
> > ---
> >  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?

You are right, I did NO_INIT_REPORTS because thats where the timeout was. 
But after further investigation I found that device is silent.

I will change, test and resubmit a new patch version.

-Stafford