[U-Boot] [PATCH] usb: kbd: don't use int xfers when polling via ctrl xfers

[Stephen Warren]

On 11/13/2015 06:16 PM, Marek Vasut wrote:
> On Friday, November 13, 2015 at 09:34:09 PM, Stephen Warren wrote:
>> From: Stephen Warren <swarren at nvidia.com>
>>
>> When CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP is enabled, use a
>> GET_REPORT control transfer to retrieve the initial state of the
>> keyboard. This matches the technique used to poll the keyboard state.
>> This is useful since it eliminates the remaining use of interrupt
>> transfers from the USB keyboard driver, which allows it to work with
>> USB HCD that don't support interrupt transfers.
>>
>> Cc: Hans de Goede <hdegoede at redhat.com>
>> Signed-off-by: Stephen Warren <swarren at nvidia.com>
>> ---
>> Are there any disadvantages to using control transfers over interrupt
>> transfers? I'm not aware of any, but I assume there must be a reason
>> that U-Boot typically uses interrupt transfers.
>
> I initially implemented the control EP polling because I had a keyboard
> which had issues with interrupt transfers.
>
> Reviewed-by: Marek Vasut <marex at denx.de>

Did you intend someone else to apply this?