[lkml]   [2010]   [Sep]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [RESEND/PATCH 5/6] USB: musb-gadget: complete request only if data is transfered over

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

 \ /
  Last update: 2010-09-15 12:13    [W:0.057 / U:6.516 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site