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authorAlan Stern <stern@rowland.harvard.edu>2008-04-03 18:03:17 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2008-04-24 21:16:48 -0700
commit43bbb7e015c4380064796c5868b536437b165615 (patch)
tree6f4b8e184904917677ce00f600ebf3c8839f47f0 /drivers/usb/host/ohci-sm501.c
parent7be7d7418776a41badce7ca00246e270d408e4b9 (diff)
USB: OHCI: host-controller resumes leave root hub suspended
Drivers in the ohci-hcd family should perform certain tasks whenever their controller device is resumed. These include checking for loss of power during suspend, turning on port power, and enabling interrupt requests. Until now these jobs have been carried out when the root hub is resumed, not when the controller is. Many drivers work around the resulting awkwardness by automatically resuming their root hub whenever the controller is resumed. But this is wasteful and unnecessary. To simplify the situation, this patch (as1066) adds a new core routine, ohci_finish_controller_resume(), which can be used by all the OHCI-variant drivers. They can call the new routine instead of resuming their root hubs. And ohci-pci.c can call it instead of using its own special-purpose handler. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/ohci-sm501.c')
-rw-r--r--drivers/usb/host/ohci-sm501.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/usb/host/ohci-sm501.c b/drivers/usb/host/ohci-sm501.c
index 54b6ac2e3e4..4a11e181601 100644
--- a/drivers/usb/host/ohci-sm501.c
+++ b/drivers/usb/host/ohci-sm501.c
@@ -231,14 +231,15 @@ static int ohci_sm501_suspend(struct platform_device *pdev, pm_message_t msg)
static int ohci_sm501_resume(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
- struct ohci_hcd *ohci = hcd_to_ohci(platform_get_drvdata(pdev));
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
if (time_before(jiffies, ohci->next_statechange))
msleep(5);
ohci->next_statechange = jiffies;
sm501_unit_power(dev->parent, SM501_GATE_USB_HOST, 1);
- usb_hcd_resume_root_hub(platform_get_drvdata(pdev));
+ ohci_finish_controller_resume(hcd);
return 0;
}
#else