* Re: USB: count of reading urbs [not found] <mailman.1153399921.28044.linux-kernel2news@redhat.com> @ 2006-07-22 5:17 ` Pete Zaitcev 0 siblings, 0 replies; 3+ messages in thread From: Pete Zaitcev @ 2006-07-22 5:17 UTC (permalink / raw) To: Sergej Pupykin; +Cc: linux-kernel On 20 Jul 2006 16:43:23 +0400, Sergej Pupykin <ps@lx-ltd.ru> wrote: > Please, tell me. If I submit one urb, can I lost data? (If data comes when > urb callback executed) USB by its nature requires devices to have some buffering, because polling by the host may be irregular or not often enough. So, usually there is no loss of data in such case. If you delay resubmissions enough to overrun device's internal queue, it may happen. -- Pete ^ permalink raw reply [flat|nested] 3+ messages in thread
* USB: count of reading urbs @ 2006-07-20 12:43 Sergej Pupykin 2006-07-20 22:21 ` Greg KH 0 siblings, 1 reply; 3+ messages in thread From: Sergej Pupykin @ 2006-07-20 12:43 UTC (permalink / raw) To: linux-kernel Hi, All! Please, tell me. If I submit one urb, can I lost data? (If data comes when urb callback executed) ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: USB: count of reading urbs 2006-07-20 12:43 Sergej Pupykin @ 2006-07-20 22:21 ` Greg KH 0 siblings, 0 replies; 3+ messages in thread From: Greg KH @ 2006-07-20 22:21 UTC (permalink / raw) To: Sergej Pupykin; +Cc: linux-kernel On Thu, Jul 20, 2006 at 04:43:23PM +0400, Sergej Pupykin wrote: > > Hi, All! > > Please, tell me. If I submit one urb, can I lost data? (If data comes when > urb callback executed) No. How can data be received if you have not submitted an urb? The way USB works just does not allow this. thanks, greg k-h ^ permalink raw reply [flat|nested] 3+ messages in thread
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2006-07-22 5:17 ` USB: count of reading urbs Pete Zaitcev
2006-07-20 12:43 Sergej Pupykin
2006-07-20 22:21 ` Greg KH
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