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

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Message-ID: <4C8E4882.6040600@ru.mvista.com>
Date:	Mon, 13 Sep 2010 19:51:30 +0400
From:	Sergei Shtylyov <sshtylyov@...sta.com>
To:	Ming Lei <tom.leiming@...il.com>
CC:	Sergei Shtylyov <sshtylyov@...sta.com>, greg@...ah.com,
	linux-usb@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	Felipe Balbi <balbi@...com>, Anand Gadiyar <gadiyar@...com>,
	Mike Frysinger <vapier@...too.org>
Subject: Re: [RESEND/PATCH 5/6] USB: musb-gadget: complete request only if
 data is transfered over

Hello.

Ming Lei wrote:

>>   But why not modify the conditional above all that code, just excluding
>> 'is_dma' from it. This conditional already includes (request->actual ==
>> request->length) check. Please recast this patch.

> The two condition is OR relation, not and, so we can't exclude 'is_dma' simply.

    Yes, we can. You're clearly handling only the DMA case with your added 
check, the PIO case was already handled.

> Anyway, the change is not wrong, right?

    Not wrong, but the check is duplicate.

> thanks,

WBR, Sergei
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