From: Richard Miller <9fans@hamnavoe.com>
To: 9fans@9fans.net
Subject: Re: [9fans] new usb stack and implicit timeouts
Date: Sun, 19 Jul 2009 12:05:23 +0100 [thread overview]
Message-ID: <c34a3aec111266230d3d11d03fa72684@hamnavoe.com> (raw)
In-Reply-To: <8ccc8ba40907190207n2bd97032ra267bff7e45f7813@mail.gmail.com>
> THere are some disks that do not respond
> to the controller after they crash. Also, RPCs carrying ctl requests
> to the devices
> may not respond either in some devices. I thought it was for sure
> an error when control and bulk requests took more than a while.
Bulk pipes are not always used in a request-response manner -- they
are just pipes. For many device classes (like ether or serial),
a bulk read may need to wait an arbitrary amount of time until the
other end has something to send. Have you seen anything in the USB
spec which indicates a timeout for reading from a bulk pipe is
appropriate?
next prev parent reply other threads:[~2009-07-19 11:05 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-19 7:16 cinap_lenrek
2009-07-19 7:21 ` Bruce Ellis
2009-07-19 7:54 ` cinap_lenrek
2009-07-19 9:07 ` Francisco J Ballesteros
2009-07-19 11:05 ` Richard Miller [this message]
2009-07-19 11:30 ` Francisco J Ballesteros
2009-07-19 11:51 ` Richard Miller
2009-07-19 11:56 ` Francisco J Ballesteros
2009-07-19 13:40 ` erik quanstrom
2009-07-19 13:53 ` erik quanstrom
2009-07-19 14:03 ` Richard Miller
2009-07-19 14:32 ` erik quanstrom
2009-07-19 15:14 ` Francisco J Ballesteros
2009-07-19 15:46 ` cinap_lenrek
2009-07-19 15:58 ` Francisco J Ballesteros
2009-07-20 7:12 ` Gorka Guardiola
2009-07-20 15:07 ` Dan Cross
2009-07-20 16:25 ` Francisco J Ballesteros
2009-07-20 18:10 ` Lyndon Nerenberg
2009-07-20 19:51 ` Dan Cross
2009-07-21 8:51 ` Francisco J Ballesteros
2009-07-19 15:36 ` Richard Miller
2009-07-19 11:41 ` Charles Forsyth
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