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authorRafael J. Wysocki <rjw@sisk.pl>2008-01-12 20:40:46 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2008-01-24 20:40:04 -0800
commit775b64d2b6ca37697de925f70799c710aab5849a (patch)
tree09e91c89228c8d3c6928a1b2ef56711190c69836 /lib/kref.c
parent7a83d456a86d559a6347115d206d23774bc152d9 (diff)
PM: Acquire device locks on suspend
This patch reorganizes the way suspend and resume notifications are sent to drivers. The major changes are that now the PM core acquires every device semaphore before calling the methods, and calls to device_add() during suspends will fail, while calls to device_del() during suspends will block. It also provides a way to safely remove a suspended device with the help of the PM core, by using the device_pm_schedule_removal() callback introduced specifically for this purpose, and updates two drivers (msr and cpuid) that need to use it. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'lib/kref.c')
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