linux-kernel - Re: [RESEND/PATCH 5/6] USB: musb-gadget: complete request only if data is transfered over

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Message-ID: <AANLkTim+d-DvOhajKxKL21ZOfWkyCSH3ywfw-01g2S0c@mail.gmail.com>
Date:	Wed, 15 Sep 2010 17:56:57 +0800
From:	Ming Lei <tom.leiming@...il.com>
To:	balbi@...com
Cc:	Sergei Shtylyov <sshtylyov@...sta.com>,
	"greg@...ah.com" <greg@...ah.com>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	"Gadiyar, Anand" <gadiyar@...com>,
	Mike Frysinger <vapier@...too.org>
Subject: Re: [RESEND/PATCH 5/6] USB: musb-gadget: complete request only if
 data is transfered over

2010/9/15 Felipe Balbi <balbi@...com>:
> if request->length == 1MB and dma->max_len = 128KB, when is_dma is true,
> request->actual will be different from request->length for 7
> 'iterations', then only on the 8th it will be the same. I believe that's
> what Ming is trying to fix.
>
> Ming, am I correct ?

Yes, it is the initial motivation of the patch.

-- 
Lei Ming
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