Messages in this thread | | | Date | Tue, 18 May 2010 10:44:10 +0200 (CEST) | From | Jiri Kosina <> | Subject | Re: [PATCH 1/1] hidraw: Use Interrupt Endpoint for OUT Transfers if Available |
| |
On Sun, 16 May 2010, Alan Ott wrote:
> From: Alan Ott <alan@signal11.us> > > This patch makes the hidraw driver use the first Interrupt OUT endpoint for > HID transfers to the device if such an endpoint exists. This is consistent > with the behavior of the hiddev driver, and the logic is similar. > > Signed-off-by: Alan Ott <alan@signal11.us> > --- > I believe this to be consistent with the section 4.4 of the HID 1.11 > specification located at: > http://www.usb.org/developers/devclass_docs/HID1_11.pdf > > >From the specification (page numbered 10, the 20th page of the document > (xpdf page 20)): > > The Interrupt Out pipe is optional. If a device declares an Interrupt Out > endpoint then Output reports are transmitted by the host to the device > through the Interrupt Out endpoint. If no Interrupt Out endpoint is > declared then Output reports are transmitted to a device through the > Control endpoint, using Set_Report(Output) requests. > > This is also consistent with the way the Windows HID library (hid.dll) > works.
Yes, this definitely is a proper improvement. Thanks Alan, I have queued the patch.
-- Jiri Kosina SUSE Labs, Novell Inc.
| |