Re: [Bug 10030] Suspend doesn't work when SD card is inserted

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To: Pavel Machek <pavel@...>
Cc: Rafael J. Wysocki <rjw@...>, Pierre Ossman <drzeus-mmc@...>, Zdenek Kabelac <zdenek.kabelac@...>, Kernel development list <linux-kernel@...>, pm list <linux-pm@...>
Date: Sunday, February 24, 2008 - 3:03 pm

On Sun, 24 Feb 2008, Pavel Machek wrote:


It's protected by whatever existing locking scheme allows only one
task to start a system sleep at a time.  For example, the suspending 
task has to get a write lock on pm_sleep_rwsem.

Yes, if the suspending task exits before the system has woken up, 
you're in trouble regardless.


We aren't necessarily UP.  But since all that matters is whether or not 
suspend_task is equal to the current task, no extra locking is needed.  

I'll add a comment explaining all this.

Alan Stern

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Messages in current thread:
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Wed Feb 20, 6:15 pm)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Wed Feb 20, 8:02 pm)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Thu Feb 21, 12:38 pm)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Thu Feb 21, 6:47 pm)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Fri Feb 22, 9:30 pm)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Sat Feb 23, 4:16 pm)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Sat Feb 23, 8:19 pm)
Re: [linux-pm] [Bug 10030] Suspend doesn't work when SD card..., Rafael J. Wysocki, (Sun Feb 24, 10:00 am)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Alan Stern, (Sun Feb 24, 3:03 pm)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Mon Feb 25, 7:40 am)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Sun Feb 24, 6:21 pm)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Mon Feb 25, 7:41 am)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Sun Feb 24, 9:51 am)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Sun Feb 24, 4:09 pm)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Sun Feb 24, 9:33 am)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Sun Feb 24, 4:25 pm)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Sun Feb 24, 4:56 pm)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Sun Feb 24, 6:18 pm)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Wed Feb 20, 6:41 pm)
Re: [Bug 10030] Suspend doesn't work when SD card is inserted, Rafael J. Wysocki, (Wed Feb 20, 4:58 pm)