linux-kernel - Re: [PATCH/RFC 5/5] usb: Add support for streams alloc/dealloc to devio.c

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Date:	Tue, 19 Jul 2011 12:26:58 +0200
From:	Oliver Neukum <oneukum@...e.de>
To:	"Amit Blay" <ablay@...eaurora.org>
Cc:	"Sarah Sharp" <sarah.a.sharp@...ux.intel.com>,
	"Tatyana Brokhman" <tlinder@...eaurora.org>, greg@...ah.com,
	linux-usb@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	balbi@...com, "Amit Blay" <ablay@...lcomm.com>,
	"open list" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH/RFC 5/5] usb: Add support for streams alloc/dealloc to devio.c

Am Dienstag, 19. Juli 2011, 12:07:39 schrieben Sie:

Hi,

> >> 1. Interface number [IN]
> >> 2. Bitmap indicating which EP to allocate streams for [IN]
> >
> > If this is a bitmap,
> >
> >> 3. Number of streams to allocate, one number [IN}
> >> 4. Number of streams actually allocated, one number  [OUT]
> >
> > how can those be scalars?
> >
> 
> The bitmap only indicates which EP the user space requests to allocate
> streams for. The actual number is taken from #3.

Exactly. If you specify EP with a bitmap, what do you do if multiple bits
are set in the map?

	Regards
		Oliver
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