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USB: Implement PM FREEZE and PRETHAW
authorAlan Stern <stern@rowland.harvard.edu>
Fri, 4 May 2007 15:51:25 +0000 (11:51 -0400)
committerGreg Kroah-Hartman <gregkh@suse.de>
Thu, 12 Jul 2007 23:29:46 +0000 (16:29 -0700)
commit5487c6a5b1dbaa09b7c484c0a45b9094c0d53f53
tree7b510d94bd7e1351e997504276ccd6e5973b2127tree | snapshot
parenta175020c617f5ba7473696a476876433087451c1commit | diff
USB: Implement PM FREEZE and PRETHAW

This patch (as884) finally implements the time-saving semantics
possible with the Power Management FREEZE and PRETHAW events.  Their
proper handling requires only that devices be quiesced, with
interrupts and DMA turned off; non-root USB devices don't actually
need to be put in a suspended state.  The patch checks and avoids
doing the suspend call when possible.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/core/driver.c diff | blob | history
drivers/usb/core/generic.c diff | blob | history
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