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From: Wang YanQing <udknight@gmail.com>
To: lkml <linux-kernel@vger.kernel.org>
Cc: linux-usb@vger.kernel.org
Subject: [RFC]Is usb port number fixed?
Date: Fri, 20 Apr 2012 17:25:25 +0800	[thread overview]
Message-ID: <20120420092525.GA12660@udknight> (raw)

Hi!
when I execute the command below:

"ls /sys/bus/usb/devices/"

I get:
"1-0:1.0 1-1 1-1:1.0 2-0:1.0 2-1 2-1.1 2-1:1.0 2-1.1:1.0 2-1.5 2-1.5:1.0 2-1.5:1.1  usb1  usb2"

the output format is bus-port.port:config.interface
I want to know whether the port number is fixed after I reboot machine time by time.
And if it is fixed, then what make it.

Thanks!

             reply	other threads:[~2012-04-20  9:25 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-20  9:25 Wang YanQing [this message]
2012-04-20  9:37 ` [RFC]Is usb port number fixed? Wang YanQing
2012-04-20 15:37   ` Greg KH
     [not found]     ` <CAHkwNT=VW8qF-7QRxpiaWkmQm0UFdsbahFLhT-PCc4OMnVs1Gg@mail.gmail.com>
2012-04-20 16:19       ` Greg KH
2012-04-21  0:32     ` Alan Stern
2012-04-21  5:56       ` Wang YanQing
2012-04-21 17:23         ` Alan Stern
     [not found] <CAHkwNT=DTjdhZmEg+SFGOVi+ZcS-NpHWH8Hh3XV+-BPzHRC7NA@mail.gmail.com>
2012-04-22 12:47 ` Alan Stern
2012-04-23  1:52   ` Wang YanQing
2012-04-23 15:13     ` Alan Stern
2012-04-24  2:16       ` Wang YanQing
2012-04-24 14:14         ` Alan Stern
2012-04-24 15:58           ` Wang YanQing
2012-04-24 14:22         ` anil
2012-04-24  2:24       ` Wang YanQing

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