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| author |   Alan Stern <stern@rowland.harvard.edu> | 2007-05-04 11:52:40 -0400 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@suse.de> | 2007-07-12 16:29:47 -0700 |
| commit | 383975d765523a56dc43a6cd6d52e9b376800cf2 (patch) | |
| tree | d6ecbfe620d7d5fba372211d7af185e7c44e5097 /include/linux/usb/quirks.h | |
| parent | USB: add USB-Persist facility (diff) | |
| download | linux-dev-383975d765523a56dc43a6cd6d52e9b376800cf2.tar.xz linux-dev-383975d765523a56dc43a6cd6d52e9b376800cf2.zip | |
USB: EHCI, OHCI: handover changes
This patch (as887) changes the way ehci-hcd and ohci-hcd handle a loss
of VBUS power during suspend. In order for the USB-persist facility
to work correctly, it is necessary for low- and full-speed devices
attached to a high-speed port to be handed back to the companion
controller during resume processing.
This entails three changes: adding code to ehci-hcd to perform the
handover, removing code from ohci-hcd to turn off ports during
root-hub reinit, and adding code to ohci-hcd to turn on ports during
PCI controller resume. (Other bus glue resume methods for platforms
supporting high-speed controllers would need a similar change, if any
existed.)
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/usb/quirks.h')
0 files changed, 0 insertions, 0 deletions