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EHCI: centralize controller suspend/resume

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This patch (as1563) removes a lot of duplicated code by moving the
EHCI controller suspend/resume routines into the core driver, where
the various platform drivers can invoke them as needed.

Not only does this simplify these platform drivers, this also makes it
easier for other platform drivers to add suspend/resume support in the
future.

Note: The patch does not touch the ehci-fsl.c file, because its
approach to suspend and resume is so different from all the others.
It will have to be handled specially by its maintainer.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alan Stern
2012-06-28 11:19:02 -04:00
committed by Greg Kroah-Hartman
parent 336c5c310e
commit c5cf9212a3
9 changed files with 114 additions and 348 deletions
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7
drivers/usb/host/ehci-platform.c
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@@ -153,17 +153,16 @@ static int __devexit ehci_platform_remove(struct platform_device *dev)
static int ehci_platform_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
bool wakeup = device_may_wakeup(dev);
bool do_wakeup = device_may_wakeup(dev);
ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd), wakeup);
return 0;
return ehci_suspend(hcd, do_wakeup);
}
static int ehci_platform_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
ehci_prepare_ports_for_controller_resume(hcd_to_ehci(hcd));
ehci_resume(hcd, false);
return 0;
}