From 269954e542328f014fc07fbb0a986192f7a1cced Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Mon, 19 Nov 2007 15:57:45 -0500 Subject: [PATCH] USB: don't change HC power state for a FREEZE This patch (as1016) prevents PCI-based host controllers from undergoing a power-state change during a FREEZE or a PRETHAW. Such changes are needed only during a SUSPEND. Signed-off-by: Alan Stern CC: David Brownell Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd-pci.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c index 3fb9af8..4246742 100644 --- a/drivers/usb/core/hcd-pci.c +++ b/drivers/usb/core/hcd-pci.c @@ -250,6 +250,12 @@ int usb_hcd_pci_suspend (struct pci_dev *dev, pm_message_t message) pci_disable_device (dev); } + if (message.event == PM_EVENT_FREEZE || + message.event == PM_EVENT_PRETHAW) { + dev_dbg(hcd->self.controller, "--> no state change\n"); + goto done; + } + if (!has_pci_pm) { dev_dbg (hcd->self.controller, "--> PCI D0/legacy\n"); goto done; -- 2.7.4