Re: ACPI button module - USB interaction during unload (Michael Frank)

This interaction is perhaps also the cause of the failure to unload usbcore 
when using acpid to 
trigger suspension (swsusp) and one presses the power button, in kernel 
2.4.20 + acpi20021212 + swsusp beta19-16 and older versions.

Best regards,

Luís Neves

Content-Type=message/rfc822
Content-Description=embedded message

From: Michael Frank <redacted>

To: acpi-devel-pyega4qmqnRoyOMFzWx49A@public.gmane.org, linux-usb-devel@lists.sourceforge.net
Date: Wed, 14 May 2003 20:22:57 +0800
Cc: Rob Miller <redacted>
Subject: [ACPI] ACPI button module - USB interaction during unload

2.4.21-rc1 + acpi2003 04 24

Problems: Unloading of button modules generates messages below when having 
usbcore loaded with either usb-ohci or usb-uhci

May 14 16:18:00 mhfl2 kernel: evxfevnt-0318 [23] acpi_disable_event    : 

Could >not disable power_button events

May 14 16:18:00 mhfl2 kernel:  evxface-0172 [22] acpi_remove_fixed_even: 

Could >not write to fixed event enable register.

May 14 16:18:00 mhfl2 kernel: acpi_button-0453 [21] acpi_button_remove    : 
Error removing notify handler
May 14 16:18:00 mhfl2 kernel: usb.c: USB disconnect on device 00:14.0-0 
address 1
May 14 16:18:00 mhfl2 kernel: usb.c: USB bus 1 deregistered
May 14 16:18:00 mhfl2 kernel: usb.c: deregistering driver usbdevfs
May 14 16:18:00 mhfl2 kernel: usb.c: deregistering driver hub

Notes: 
1) This problem does not show in 2.5.69.

2) unloading of button module without USB loaded OK.

Any suggestions how this can be fixed?

Regards
Michael

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