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From stern@rowland.harvard.edu Wed Jul 7 14:55:11 2010
From: Alan Stern <stern@rowland.harvard.edu>
Date: Fri, 25 Jun 2010 14:02:03 -0400 (EDT)
Subject: USB: move PCI HCD resume routine
To: Greg KH <greg@kroah.com>
Message-ID: <Pine.LNX.4.44L0.1006251239250.1604-100000@iolanthe.rowland.org>
This patch (as1384) moves the resume_common() routine in hcd-pci.c a
little higher in the source file to avoid forward references in an
upcoming patch. It also replaces the "hibernated" argument with a
more general "event" argument, which will be useful when the routine
is called during a runtime resume.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/usb/core/hcd-pci.c | 77 ++++++++++++++++++++++-----------------------
1 file changed, 39 insertions(+), 38 deletions(-)
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -403,6 +403,43 @@ static int hcd_pci_suspend(struct device
return retval;
}
+static int resume_common(struct device *dev, int event)
+{
+ struct pci_dev *pci_dev = to_pci_dev(dev);
+ struct usb_hcd *hcd = pci_get_drvdata(pci_dev);
+ int retval;
+
+ if (hcd->state != HC_STATE_SUSPENDED) {
+ dev_dbg(dev, "can't resume, not suspended!\n");
+ return 0;
+ }
+
+ retval = pci_enable_device(pci_dev);
+ if (retval < 0) {
+ dev_err(dev, "can't re-enable after resume, %d!\n", retval);
+ return retval;
+ }
+
+ pci_set_master(pci_dev);
+
+ clear_bit(HCD_FLAG_SAW_IRQ, &hcd->flags);
+
+ if (hcd->driver->pci_resume) {
+ /* This call should be made only during system resume,
+ * not during runtime resume.
+ */
+ wait_for_companions(pci_dev, hcd);
+
+ retval = hcd->driver->pci_resume(hcd,
+ event == PM_EVENT_RESTORE);
+ if (retval) {
+ dev_err(dev, "PCI post-resume error %d!\n", retval);
+ usb_hc_died(hcd);
+ }
+ }
+ return retval;
+}
+
static int hcd_pci_suspend_noirq(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
@@ -452,50 +489,14 @@ static int hcd_pci_resume_noirq(struct d
return 0;
}
-static int resume_common(struct device *dev, bool hibernated)
-{
- struct pci_dev *pci_dev = to_pci_dev(dev);
- struct usb_hcd *hcd = pci_get_drvdata(pci_dev);
- int retval;
-
- if (hcd->state != HC_STATE_SUSPENDED) {
- dev_dbg(dev, "can't resume, not suspended!\n");
- return 0;
- }
-
- retval = pci_enable_device(pci_dev);
- if (retval < 0) {
- dev_err(dev, "can't re-enable after resume, %d!\n", retval);
- return retval;
- }
-
- pci_set_master(pci_dev);
-
- clear_bit(HCD_FLAG_SAW_IRQ, &hcd->flags);
-
- if (hcd->driver->pci_resume) {
- /* This call should be made only during system resume,
- * not during runtime resume.
- */
- wait_for_companions(pci_dev, hcd);
-
- retval = hcd->driver->pci_resume(hcd, hibernated);
- if (retval) {
- dev_err(dev, "PCI post-resume error %d!\n", retval);
- usb_hc_died(hcd);
- }
- }
- return retval;
-}
-
static int hcd_pci_resume(struct device *dev)
{
- return resume_common(dev, false);
+ return resume_common(dev, PM_EVENT_RESUME);
}
static int hcd_pci_restore(struct device *dev)
{
- return resume_common(dev, true);
+ return resume_common(dev, PM_EVENT_RESTORE);
}
const struct dev_pm_ops usb_hcd_pci_pm_ops = {
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