From: Greg KH <greg@kroah.com>
To: Matthew Wilcox <matthew@wil.cx>
Cc: Arjan van de Ven <arjan@infradead.org>,
linux-scsi@vger.kernel.org,
Stefan Richter <stefanr@s5r6.in-berlin.de>,
linux-hotplug-devel@lists.sourceforge.net,
Patrick Mansfield <patmans@us.ibm.com>,
"Alexander E. Patrakov" <patrakov@ums.usu.ru>,
James Bottomley <James.Bottomley@SteelEye.com>
Subject: Re: Asynchronous scsi scanning, version 9
Date: Mon, 26 Jun 2006 09:02:50 -0700 [thread overview]
Message-ID: <20060626160250.GA3456@kroah.com> (raw)
In-Reply-To: <20060626151828.GH1608@parisc-linux.org>
On Mon, Jun 26, 2006 at 09:18:28AM -0600, Matthew Wilcox wrote:
> On Mon, Jun 26, 2006 at 07:44:42AM -0700, Matthew Dharm wrote:
> > Second, depending on how many hubs are between the host and target, the
> > time-to-discover the device is highly variable.
>
> Can, or does, USB keep track of hub discovery, and hence know whether
> or not it's completed USB discovery?
Nope, it never knows this. So that is why you can't have any type of
"just wait until USB is done scanning all devices before continuing"
behavior, because there is no such thing to trigger off of.
sorry,
greg k-h
next prev parent reply other threads:[~2006-06-26 16:06 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-11 14:33 [RFC] Asynchronous scsi scanning Matthew Wilcox
2006-05-11 18:15 ` Mike Christie
2006-05-11 18:21 ` Matthew Wilcox
2006-05-11 18:49 ` Mike Christie
2006-05-11 18:56 ` Matthew Wilcox
2006-05-11 19:09 ` Mike Christie
2006-05-18 17:22 ` [PATCH] " Matthew Wilcox
2006-05-29 3:19 ` Asynchronous scsi scanning, version 9 Matthew Wilcox
2006-05-29 8:38 ` Stefan Richter
2006-05-29 13:05 ` Matthew Wilcox
2006-05-29 13:11 ` Arjan van de Ven
2006-05-29 13:19 ` Matthew Wilcox
2006-05-31 23:21 ` Patrick Mansfield
2006-06-01 12:22 ` Kay Sievers
2006-10-26 19:53 ` maximilian attems
2006-06-01 13:14 ` Alexander E. Patrakov
2006-06-01 13:21 ` maximilian attems
2006-06-01 13:23 ` Matthew Wilcox
2006-06-01 13:26 ` Alexander E. Patrakov
2006-06-01 14:00 ` Arjan van de Ven
2006-06-25 21:15 ` James Bottomley
2006-06-25 22:46 ` Matthew Wilcox
2006-06-26 8:24 ` Arjan van de Ven
2006-06-26 12:40 ` Matthew Wilcox
2006-06-26 12:59 ` Arjan van de Ven
2006-06-26 16:03 ` Greg KH
2006-06-26 14:44 ` Matthew Dharm
2006-06-26 15:18 ` Matthew Wilcox
2006-06-26 15:44 ` James Bottomley
2006-06-26 16:02 ` Greg KH [this message]
2006-06-26 21:08 ` Matthew Dharm
2006-06-26 22:15 ` Matthew Wilcox
2006-06-26 18:55 ` [SPAM] " Doug Ledford
2006-06-26 21:04 ` Matthew Dharm
2006-06-26 21:20 ` Doug Ledford
2006-06-26 20:58 ` Linas Vepstas
2006-06-26 21:14 ` James Bottomley
2006-06-26 21:21 ` Linas Vepstas
2006-06-26 21:41 ` James Bottomley
2006-06-28 7:52 ` Hannes Reinecke
2006-06-28 16:03 ` James Bottomley
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