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authorAlan Stern <stern@rowland.harvard.edu>2012-07-11 11:23:16 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-07-16 16:56:48 -0700
commit43fe3a99d9caf10b25f9c596e9854cdae30db418 (patch)
tree596812dcd61ba9cbffe0e837d53dd3a2232ad214 /drivers/usb/core/hub.c
parentc4f3476436f7452b97c8accb5dd7d53219a11a3f (diff)
USB: EHCI: resolve some unlikely races
This patch (as1589) resolves some unlikely races involving system shutdown or controller death in ehci-hcd: Shutdown races with both root-hub resume and controller resume. Controller death races with root-hub suspend. A new bitflag is added to indicate that the controller has been shut down (whether for system shutdown or because it died). Tests are added in the suspend and resume pathways to avoid reactivating the controller after any sort of shutdown. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core/hub.c')
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