Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware before hibernation/suspend | KernelTrap

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware before hibernation/suspend

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From: Matthew Garrett

Subject: Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware before hibernation/suspend

Date: Sunday, May 27, 2007 - 1:49 pm

On Sun, May 27, 2007 at 10:31:53PM +0200, Rafael J. Wysocki wrote:
quoted text> From: Rafael J. Wysocki <rjw@sisk.pl>
> 
> Use a hibernation and suspend notifier to disable the firmware requesting
> mechanism before a hibernation/suspend and enable it after the operation.

This avoids the problem of .resume methods calling userspace while 
userspace is frozen and a resulting hang, but does it actually result in 
the drivers beginning to work again? If we remove process freezing in 
STR, this should just work[1] without the need to complicate things. On 
the other hand, if we don't want to support these functions in the 
suspend and resume methods we could just audit the kernel and remove 
them all.

-- 
Matthew Garrett | mjg59@srcf.ucam.org
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Messages in current thread:

[RFC][PATCH -mm 0/3] PM: Hibernation and suspend notifiers, Rafael J. Wysocki, (Sun May 27, 1:29 pm)

[RFC][PATCH -mm 1/3] PM: Hibernation and suspend notifiers, Rafael J. Wysocki, (Sun May 27, 1:30 pm)

[RFC][PATCH -mm 2/3] PM: Disable usermode helper before hi ..., Rafael J. Wysocki, (Sun May 27, 1:30 pm)

[RFC][PATCH -mm 3/3] PM: Disable _request_firmware before ..., Rafael J. Wysocki, (Sun May 27, 1:31 pm)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Michael-Luke Jones, (Sun May 27, 1:45 pm)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Matthew Garrett, (Sun May 27, 1:49 pm)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Rafael J. Wysocki, (Sun May 27, 2:45 pm)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Kay Sievers, (Sun May 27, 2:49 pm)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Rafael J. Wysocki, (Sun May 27, 2:55 pm)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Rafael J. Wysocki, (Sun May 27, 3:01 pm)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Matthew Garrett, (Sun May 27, 3:01 pm)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Matthew Garrett, (Sun May 27, 3:04 pm)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Kay Sievers, (Sun May 27, 3:16 pm)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Rafael J. Wysocki, (Mon May 28, 12:43 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Rafael J. Wysocki, (Mon May 28, 12:44 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Nigel Cunningham, (Mon May 28, 1:30 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Michael-Luke Jones, (Mon May 28, 1:48 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Kay Sievers, (Mon May 28, 2:06 am)

Re: [RFC][PATCH -mm 1/3] PM: Hibernation and suspend notifiers, Nigel Cunningham, (Mon May 28, 2:49 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Michael-Luke Jones, (Mon May 28, 3:26 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Michael-Luke Jones, (Mon May 28, 3:41 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Pavel Machek, (Mon May 28, 4:15 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Rafael J. Wysocki, (Mon May 28, 4:22 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Kay Sievers, (Mon May 28, 4:24 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Rafael J. Wysocki, (Mon May 28, 4:28 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Pavel Machek, (Mon May 28, 4:28 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Michael-Luke Jones, (Mon May 28, 4:38 am)

Re: [linux-pm] Re: [RFC][PATCH -mm 3/3] PM: Disable _reque ..., Pavel Machek, (Mon May 28, 4:45 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Kay Sievers, (Mon May 28, 4:51 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Kay Sievers, (Mon May 28, 5:01 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Michael-Luke Jones, (Mon May 28, 5:07 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Michael-Luke Jones, (Mon May 28, 5:26 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Kay Sievers, (Mon May 28, 5:47 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Pavel Machek, (Mon May 28, 6:00 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Pavel Machek, (Mon May 28, 6:01 am)

Re: [RFC][PATCH -mm 2/3] PM: Disable usermode helper befor ..., Pavel Machek, (Mon May 28, 6:04 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Pavel Machek, (Mon May 28, 6:07 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Michael-Luke Jones, (Mon May 28, 6:10 am)

Re: [RFC][PATCH -mm 1/3] PM: Hibernation and suspend notifiers, Pavel Machek, (Mon May 28, 6:12 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Alan Stern, (Mon May 28, 8:55 am)

Re: [RFC][PATCH -mm 1/3] PM: Hibernation and suspend notifiers, Alan Stern, (Mon May 28, 8:56 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Alan Stern, (Mon May 28, 9:09 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Matthew Garrett, (Mon May 28, 9:12 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Alan Stern, (Mon May 28, 9:43 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Matthew Garrett, (Mon May 28, 9:54 am)

Re: [RFC][PATCH -mm 1/3] PM: Hibernation and suspend notifiers, Rafael J. Wysocki, (Mon May 28, 10:26 am)

Re: [RFC][PATCH -mm 1/3] PM: Hibernation and suspend notifiers, Rafael J. Wysocki, (Mon May 28, 10:29 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Rafael J. Wysocki, (Mon May 28, 10:43 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Alan Stern, (Mon May 28, 1:03 pm)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Ray Lee, (Mon May 28, 1:51 pm)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Pavel Machek, (Mon May 28, 1:57 pm)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Pavel Machek, (Mon May 28, 1:59 pm)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Alan Stern, (Mon May 28, 3:29 pm)

Re: [linux-pm] Re: [RFC][PATCH -mm 3/3] PM: Disable _reque ..., David Brownell, (Tue May 29, 1:09 pm)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Rob Landley, (Tue May 29, 1:41 pm)

Re: [linux-pm] Re: [RFC][PATCH -mm 3/3] PM: Disable _reque ..., Alan Stern, (Tue May 29, 1:48 pm)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Rob Landley, (Tue May 29, 2:19 pm)

Re: [RFC][PATCH -mm 1/3] PM: Hibernation and suspend notifiers, Rafael J. Wysocki, (Tue May 29, 3:24 pm)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Rob Landley, (Tue May 29, 3:51 pm)

Re: [RFC][PATCH -mm 1/3] PM: Hibernation and suspend notifiers, Pavel Machek, (Wed May 30, 8:37 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Pavel Machek, (Wed May 30, 12:50 pm)

Re: [RFC][PATCH -mm 1/3] PM: Hibernation and suspend notifiers, Rafael J. Wysocki, (Wed May 30, 1:44 pm)

Re: [RFC][PATCH -mm 1/3] PM: Hibernation and suspend notifiers, Rafael J. Wysocki, (Wed May 30, 2:11 pm)

Re: [RFC][PATCH -mm 1/3] PM: Hibernation and suspend notifiers, Nigel Cunningham, (Wed May 30, 3:24 pm)

Re: [RFC][PATCH -mm 1/3] PM: Hibernation and suspend notifiers, Pavel Machek, (Wed May 30, 3:29 pm)

Re: [RFC][PATCH -mm 1/3] PM: Hibernation and suspend notifiers, Rafael J. Wysocki, (Wed May 30, 10:42 pm)

Re: [RFC][PATCH -mm 1/3] PM: Hibernation and suspend notifiers, Rafael J. Wysocki, (Wed May 30, 10:44 pm)

Re: [RFC][PATCH -mm 1/3] PM: Hibernation and suspend notifiers, Pavel Machek, (Thu May 31, 7:23 am)

Re: [RFC][PATCH -mm 1/3] PM: Hibernation and suspend notifiers, Rafael J. Wysocki, (Thu May 31, 1:02 pm)

Re: [RFC][PATCH -mm 1/3] PM: Hibernation and suspend notifiers, Nigel Cunningham, (Thu May 31, 2:56 pm)

[RFC][PATCH -mm 0/2] PM: Hibernation and suspend notifiers ..., Rafael J. Wysocki, (Fri Jun 1, 5:41 pm)

[RFC][PATCH -mm 1/2] PM: Introduce hibernation and suspend ..., Rafael J. Wysocki, (Fri Jun 1, 5:43 pm)

[RFC][PATCH -mm 2/2] PM: Disable usermode helper before hi ..., Rafael J. Wysocki, (Fri Jun 1, 5:44 pm)

Re: [RFC][PATCH -mm 1/2] PM: Introduce hibernation and sus ..., Pavel Machek, (Sun Jun 3, 9:41 am)

Re: [RFC][PATCH -mm 2/2] PM: Disable usermode helper befor ..., Pavel Machek, (Sun Jun 3, 9:42 am)

Re: [RFC][PATCH -mm 1/2] PM: Introduce hibernation and sus ..., Rafael J. Wysocki, (Sun Jun 3, 3:38 pm)

Re: [RFC][PATCH -mm 1/2] PM: Introduce hibernation and sus ..., Pavel Machek, (Sun Jun 3, 3:59 pm)

Re: [RFC][PATCH -mm 1/2] PM: Introduce hibernation and sus ..., Rafael J. Wysocki, (Mon Jun 4, 12:56 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Pavel Machek, (Mon Jun 4, 4:00 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Alan Stern, (Tue Jun 5, 11:45 am)

Re: [RFC][PATCH -mm 3/3] PM: Disable _request_firmware bef ..., Pavel Machek, (Tue Jun 5, 1:26 pm)

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