From: Michael Guntsche <mike@it-loops.com>
To: Kay Sievers <kay.sievers@vrfy.org>
Cc: Alan Jenkins <sourcejedi.lkml@googlemail.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-hotplug <linux-hotplug@vger.kernel.org>
Subject: Re: [BUG] No ttyS0 - Strange udev 8250_pnp interaction
Date: Wed, 07 Oct 2009 20:31:21 +0000 [thread overview]
Message-ID: <20091007203121.GA432@trillian.comsick.at> (raw)
In-Reply-To: <ac3eb2510910071312qe6ad45ep6c579a8393cc6b8e@mail.gmail.com>
On 2009.10.07 22:12:28 , Kay Sievers wrote:
> To be more specific, Michael, can you please run "udevadm monitor" at
> the same time you see this happen?
I started udevadm monitor with the module installed AND all 4 devices
populated. Then I removed the module....
KERNEL[1254947142.220060] remove /devices/pnp0/00:06/tty/ttyS1 (tty)
UDEV [1254947142.220121] add
/devices/platform/serial8250/tty/ttyS1 (tty)
KERNEL[1254947142.220161] add
/devices/platform/serial8250/tty/ttyS1 (tty)
UDEV [1254947142.220857] remove /devices/pnp0/00:06/tty/ttyS1 (tty)
KERNEL[1254947142.223078] remove /devices/pnp0/00:05/tty/ttyS0 (tty)
UDEV [1254947142.223134] add
/devices/platform/serial8250/tty/ttyS0 (tty)
KERNEL[1254947142.223175] add
/devices/platform/serial8250/tty/ttyS0 (tty)
UDEV [1254947142.223800] remove /devices/pnp0/00:05/tty/ttyS0 (tty)
KERNEL[1254947142.225369] remove /bus/pnp/drivers/serial (drivers)
UDEV [1254947142.225419] remove /module/8250_pnp (module)
KERNEL[1254947142.225455] remove /module/8250_pnp (module)
UDEV [1254947142.225675] remove /bus/pnp/drivers/serial (drivers)
Afterwards ONLY ttyS2 and ttS3 were under /dev.
I then added the module again ....
KERNEL[1254947157.330470] add /module/8250_pnp (module)
UDEV [1254947157.330521] add /module/8250_pnp (module)
KERNEL[1254947157.333498] remove
/devices/platform/serial8250/tty/ttyS0 (tty)
KERNEL[1254947157.333550] add /devices/pnp0/00:05/tty/ttyS0 (tty)
UDEV [1254947157.334830] add /devices/pnp0/00:05/tty/ttyS0 (tty)
UDEV [1254947157.334889] remove
/devices/platform/serial8250/tty/ttyS0 (tty)
KERNEL[1254947157.338967] remove
/devices/platform/serial8250/tty/ttyS1 (tty)
KERNEL[1254947157.339020] add /devices/pnp0/00:06/tty/ttyS1 (tty)
KERNEL[1254947157.339056] add /bus/pnp/drivers/serial (drivers)
UDEV [1254947157.340180] remove
/devices/platform/serial8250/tty/ttyS1 (tty)
UDEV [1254947157.340753] add /devices/pnp0/00:06/tty/ttyS1 (tty)
UDEV [1254947157.341202] add /bus/pnp/drivers/serial (drivers)
ONLY ttyS1 (and S2, S3) where there.
Kind regards,
Michael
WARNING: multiple messages have this Message-ID (diff)
From: Michael Guntsche <mike@it-loops.com>
To: Kay Sievers <kay.sievers@vrfy.org>
Cc: Alan Jenkins <sourcejedi.lkml@googlemail.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-hotplug <linux-hotplug@vger.kernel.org>
Subject: Re: [BUG] No ttyS0 - Strange udev 8250_pnp interaction
Date: Wed, 7 Oct 2009 22:31:21 +0200 [thread overview]
Message-ID: <20091007203121.GA432@trillian.comsick.at> (raw)
In-Reply-To: <ac3eb2510910071312qe6ad45ep6c579a8393cc6b8e@mail.gmail.com>
On 2009.10.07 22:12:28 , Kay Sievers wrote:
> To be more specific, Michael, can you please run "udevadm monitor" at
> the same time you see this happen?
I started udevadm monitor with the module installed AND all 4 devices
populated. Then I removed the module....
KERNEL[1254947142.220060] remove /devices/pnp0/00:06/tty/ttyS1 (tty)
UDEV [1254947142.220121] add
/devices/platform/serial8250/tty/ttyS1 (tty)
KERNEL[1254947142.220161] add
/devices/platform/serial8250/tty/ttyS1 (tty)
UDEV [1254947142.220857] remove /devices/pnp0/00:06/tty/ttyS1 (tty)
KERNEL[1254947142.223078] remove /devices/pnp0/00:05/tty/ttyS0 (tty)
UDEV [1254947142.223134] add
/devices/platform/serial8250/tty/ttyS0 (tty)
KERNEL[1254947142.223175] add
/devices/platform/serial8250/tty/ttyS0 (tty)
UDEV [1254947142.223800] remove /devices/pnp0/00:05/tty/ttyS0 (tty)
KERNEL[1254947142.225369] remove /bus/pnp/drivers/serial (drivers)
UDEV [1254947142.225419] remove /module/8250_pnp (module)
KERNEL[1254947142.225455] remove /module/8250_pnp (module)
UDEV [1254947142.225675] remove /bus/pnp/drivers/serial (drivers)
Afterwards ONLY ttyS2 and ttS3 were under /dev.
I then added the module again ....
KERNEL[1254947157.330470] add /module/8250_pnp (module)
UDEV [1254947157.330521] add /module/8250_pnp (module)
KERNEL[1254947157.333498] remove
/devices/platform/serial8250/tty/ttyS0 (tty)
KERNEL[1254947157.333550] add /devices/pnp0/00:05/tty/ttyS0 (tty)
UDEV [1254947157.334830] add /devices/pnp0/00:05/tty/ttyS0 (tty)
UDEV [1254947157.334889] remove
/devices/platform/serial8250/tty/ttyS0 (tty)
KERNEL[1254947157.338967] remove
/devices/platform/serial8250/tty/ttyS1 (tty)
KERNEL[1254947157.339020] add /devices/pnp0/00:06/tty/ttyS1 (tty)
KERNEL[1254947157.339056] add /bus/pnp/drivers/serial (drivers)
UDEV [1254947157.340180] remove
/devices/platform/serial8250/tty/ttyS1 (tty)
UDEV [1254947157.340753] add /devices/pnp0/00:06/tty/ttyS1 (tty)
UDEV [1254947157.341202] add /bus/pnp/drivers/serial (drivers)
ONLY ttyS1 (and S2, S3) where there.
Kind regards,
Michael
next prev parent reply other threads:[~2009-10-07 20:31 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-07 17:54 [BUG] No ttyS0 - Strange udev 8250_pnp interaction Michael Guntsche
2009-10-07 19:46 ` Alan Jenkins
2009-10-07 19:46 ` Alan Jenkins
2009-10-07 20:06 ` Kay Sievers
2009-10-07 20:06 ` Kay Sievers
2009-10-07 20:12 ` Kay Sievers
2009-10-07 20:12 ` Kay Sievers
2009-10-07 20:31 ` Michael Guntsche [this message]
2009-10-07 20:31 ` Michael Guntsche
2009-10-07 20:53 ` Kay Sievers
2009-10-07 20:53 ` Kay Sievers
2009-10-07 21:10 ` Alan Cox
2009-10-07 21:10 ` Alan Cox
2009-10-07 21:15 ` Kay Sievers
2009-10-07 21:15 ` Kay Sievers
2009-10-07 21:23 ` Kay Sievers
2009-10-07 21:23 ` Kay Sievers
2009-10-07 21:52 ` Michael Guntsche
2009-10-07 21:52 ` Michael Guntsche
2009-10-07 22:11 ` Kay Sievers
2009-10-07 22:11 ` Kay Sievers
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