From: Sergei Shtylyov <sshtylyov@mvista.com>
To: balbi@ti.com
Cc: Sergei Shtylyov <sshtylyov@mvista.com>,
Ming Lei <tom.leiming@gmail.com>,
"greg@kroah.com" <greg@kroah.com>,
"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
David Brownell <dbrownell@users.sourceforge.net>,
"Gadiyar, Anand" <gadiyar@ti.com>,
Mike Frysinger <vapier@gentoo.org>
Subject: Re: [RESEND/PATCH 5/6] USB: musb-gadget: complete request only if data is transfered over
Date: Wed, 15 Sep 2010 14:08:46 +0400 [thread overview]
Message-ID: <4C909B2E.3000909@ru.mvista.com> (raw)
In-Reply-To: <20100915100553.GJ3393@legolas.emea.dhcp.ti.com>
Hello.
On 15-09-2010 14:05, Felipe Balbi wrote:
>> I didn't say it was duplicate for DMA, just too late.
> how come ? we need to send ZLP before giving back the request.
Well, look at the code ionce again. We need to send ZLP *after*
request->actual == request->length, but as the check is inserted after the ZLP
send, ZLP *may* be sent once the first DMA completes, not the last.
WBR, Sergei
next prev parent reply other threads:[~2010-09-15 10:10 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-07 15:23 [RESEND/PATCH 0/6] USB: musb-gadget: bug fix tom.leiming
2010-09-07 15:23 ` [RESEND/PATCH 1/6] USB: musb-gadget: fix kernel panic if using out ep with FIFO_TXRX style(v1) tom.leiming
2010-09-07 15:23 ` [RESEND/PATCH 2/6] USB: musb-gadget: fix bulk IN infinite hangs in double buffer case tom.leiming
2010-09-07 15:23 ` [RESEND/PATCH 3/6] USB: musb-gadget: enable autoclear for OUT transfer in both DMA 0 and DMA 1 tom.leiming
2010-09-07 15:23 ` [RESEND/PATCH 4/6] USB: musb-gadget: fix DMA length for OUT transfer tom.leiming
2010-09-07 15:23 ` [RESEND/PATCH 5/6] USB: musb-gadget: complete request only if data is transfered over tom.leiming
2010-09-13 12:27 ` Sergei Shtylyov
2010-09-13 14:34 ` Ming Lei
2010-09-13 15:51 ` Sergei Shtylyov
2010-09-13 16:26 ` Sergei Shtylyov
2010-09-14 6:56 ` Felipe Balbi
2010-09-14 10:46 ` Sergei Shtylyov
2010-09-14 10:54 ` Felipe Balbi
2010-09-14 17:51 ` Sergei Shtylyov
2010-09-15 6:53 ` Felipe Balbi
2010-09-15 9:56 ` Ming Lei
2010-09-15 10:01 ` Sergei Shtylyov
2010-09-15 10:05 ` Felipe Balbi
2010-09-15 10:08 ` Sergei Shtylyov [this message]
2010-09-15 10:14 ` Ming Lei
2010-09-15 10:18 ` Sergei Shtylyov
2010-09-15 10:22 ` Felipe Balbi
2010-09-15 10:27 ` Sergei Shtylyov
2010-09-15 10:31 ` Felipe Balbi
2010-09-15 10:41 ` Sergei Shtylyov
2010-09-15 10:52 ` Felipe Balbi
2010-09-15 13:02 ` Sergei Shtylyov
2010-09-15 10:37 ` Ming Lei
2010-09-07 15:23 ` [RESEND/PATCH 6/6] USB: musb-gadget: fix dma length in txstate tom.leiming
2010-09-14 17:43 ` Sergei Shtylyov
2010-09-15 7:09 ` Felipe Balbi
2010-09-08 2:19 ` [RESEND/PATCH 0/6] USB: musb-gadget: bug fix Greg KH
2010-09-08 4:32 ` Ming Lei
2010-09-08 6:18 ` Greg KH
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