Messages in this thread | | | Date | Wed, 15 Sep 2010 14:08:46 +0400 | From | Sergei Shtylyov <> | Subject | Re: [RESEND/PATCH 5/6] USB: musb-gadget: complete request only if data is transfered over |
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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
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