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| author | Alan Stern <stern@rowland.harvard.edu> | 2008-11-25 22:39:18 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-01-07 19:00:03 +0100 |
| commit | 65bfd2967c906ca322a4bb69a285fe0de8916ac6 (patch) | |
| tree | ddd3293f945613d0d27ec1dbd36030c079fb9492 /drivers/usb/core/hcd.c | |
| parent | USB: utilize round_jiffies_up_relative() (diff) | |
| download | linux-65bfd2967c906ca322a4bb69a285fe0de8916ac6.tar.xz linux-65bfd2967c906ca322a4bb69a285fe0de8916ac6.zip | |
USB: Enhance usage of pm_message_t
This patch (as1177) modifies the USB core suspend and resume
routines. The resume functions now will take a pm_message_t argument,
so they will know what sort of resume is occurring. The new argument
is also passed to the port suspend/resume and bus suspend/resume
routines (although they don't use it for anything but debugging).
In addition, special pm_message_t values are used for user-initiated,
device-initiated (i.e., remote wakeup), and automatic suspend/resume.
By testing these values, drivers can tell whether or not a particular
suspend was an autosuspend. Unfortunately, they can't do the same for
resumes -- not until the pm_message_t argument is also passed to the
drivers' resume methods. That will require a bigger change.
IMO, the whole Power Management framework should have been set up this
way in the first place.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/hcd.c')
| -rw-r--r-- | drivers/usb/core/hcd.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 7403ed871abd..a0079876d74e 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1573,14 +1573,14 @@ int usb_hcd_get_frame_number (struct usb_device *udev) #ifdef CONFIG_PM -int hcd_bus_suspend(struct usb_device *rhdev) +int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg) { struct usb_hcd *hcd = container_of(rhdev->bus, struct usb_hcd, self); int status; int old_state = hcd->state; dev_dbg(&rhdev->dev, "bus %s%s\n", - rhdev->auto_pm ? "auto-" : "", "suspend"); + (msg.event & PM_EVENT_AUTO ? "auto-" : ""), "suspend"); if (!hcd->driver->bus_suspend) { status = -ENOENT; } else { @@ -1598,14 +1598,14 @@ int hcd_bus_suspend(struct usb_device *rhdev) return status; } -int hcd_bus_resume(struct usb_device *rhdev) +int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg) { struct usb_hcd *hcd = container_of(rhdev->bus, struct usb_hcd, self); int status; int old_state = hcd->state; dev_dbg(&rhdev->dev, "usb %s%s\n", - rhdev->auto_pm ? "auto-" : "", "resume"); + (msg.event & PM_EVENT_AUTO ? "auto-" : ""), "resume"); if (!hcd->driver->bus_resume) return -ENOENT; if (hcd->state == HC_STATE_RUNNING) @@ -1638,7 +1638,7 @@ static void hcd_resume_work(struct work_struct *work) usb_lock_device(udev); usb_mark_last_busy(udev); - usb_external_resume_device(udev); + usb_external_resume_device(udev, PMSG_REMOTE_RESUME); usb_unlock_device(udev); } |