USB: Extend pci resume function to handle PM events

Currently, the pci_resume method has only a flag indicating whether the
system is resuming from hibernation. In order to handle all PM events like
AUTO_RESUME (runtime resume from device in D3), RESUME (system resume from
s2idle, S3 or S4 states) etc change the pci_resume method to handle all PM
events.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20230428140056.1318981-2-Basavaraj.Natikar@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

9 files changed, 22 insertions, 13 deletions

diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 4b148fe5e43b..889dc4426271 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -354,10 +354,11 @@ done:
  * Also they depend on separate root hub suspend/resume.
  */
 
-static int ehci_pci_resume(struct usb_hcd *hcd, bool hibernated)
+static int ehci_pci_resume(struct usb_hcd *hcd, pm_message_t msg)
 {
 	struct ehci_hcd		*ehci = hcd_to_ehci(hcd);
 	struct pci_dev		*pdev = to_pci_dev(hcd->self.controller);
+	bool			hibernated = (msg.event == PM_EVENT_RESTORE);
 
 	if (ehci_resume(hcd, hibernated) != 0)
 		(void) ehci_pci_reinit(ehci, pdev);
diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
index d7b4f40f9ff4..900ea0d368e0 100644
--- a/drivers/usb/host/ohci-pci.c
+++ b/drivers/usb/host/ohci-pci.c
@@ -301,6 +301,12 @@ static struct pci_driver ohci_pci_driver = {
 #endif
 };
 
+#ifdef CONFIG_PM
+static int ohci_pci_resume(struct usb_hcd *hcd, pm_message_t msg)
+{
+	return ohci_resume(hcd, msg.event == PM_EVENT_RESTORE);
+}
+#endif
 static int __init ohci_pci_init(void)
 {
 	if (usb_disabled())
@@ -311,7 +317,7 @@ static int __init ohci_pci_init(void)
 #ifdef	CONFIG_PM
 	/* Entries for the PCI suspend/resume callbacks are special */
 	ohci_pci_hc_driver.pci_suspend = ohci_suspend;
-	ohci_pci_hc_driver.pci_resume = ohci_resume;
+	ohci_pci_hc_driver.pci_resume = ohci_pci_resume;
 #endif
 
 	return pci_register_driver(&ohci_pci_driver);
diff --git a/drivers/usb/host/uhci-pci.c b/drivers/usb/host/uhci-pci.c
index 3592f757fe05..5df4a1832b09 100644
--- a/drivers/usb/host/uhci-pci.c
+++ b/drivers/usb/host/uhci-pci.c
@@ -167,7 +167,7 @@ static void uhci_shutdown(struct pci_dev *pdev)
 
 #ifdef CONFIG_PM
 
-static int uhci_pci_resume(struct usb_hcd *hcd, bool hibernated);
+static int uhci_pci_resume(struct usb_hcd *hcd, pm_message_t state);
 
 static int uhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
 {
@@ -202,14 +202,15 @@ done_okay:
 
 	/* Check for race with a wakeup request */
 	if (do_wakeup && HCD_WAKEUP_PENDING(hcd)) {
-		uhci_pci_resume(hcd, false);
+		uhci_pci_resume(hcd, PMSG_SUSPEND);
 		rc = -EBUSY;
 	}
 	return rc;
 }
 
-static int uhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
+static int uhci_pci_resume(struct usb_hcd *hcd, pm_message_t msg)
 {
+	bool hibernated = (msg.event == PM_EVENT_RESTORE);
 	struct uhci_hcd *uhci = hcd_to_uhci(hcd);
 
 	dev_dbg(uhci_dev(uhci), "%s\n", __func__);
diff --git a/drivers/usb/host/xhci-histb.c b/drivers/usb/host/xhci-histb.c
index 08369857686e..91ce97821de5 100644
--- a/drivers/usb/host/xhci-histb.c
+++ b/drivers/usb/host/xhci-histb.c
@@ -367,7 +367,7 @@ static int __maybe_unused xhci_histb_resume(struct device *dev)
 	if (!device_may_wakeup(dev))
 		xhci_histb_host_enable(histb);
 
-	return xhci_resume(xhci, 0);
+	return xhci_resume(xhci, PMSG_RESUME);
 }
 
 static const struct dev_pm_ops xhci_histb_pm_ops = {
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index ddb79f23fb3b..e834c77e188e 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -824,7 +824,7 @@ static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
 	return ret;
 }
 
-static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
+static int xhci_pci_resume(struct usb_hcd *hcd, pm_message_t msg)
 {
 	struct xhci_hcd		*xhci = hcd_to_xhci(hcd);
 	struct pci_dev		*pdev = to_pci_dev(hcd->self.controller);
@@ -859,7 +859,7 @@ static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
 	if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
 		xhci_pme_quirk(hcd);
 
-	retval = xhci_resume(xhci, hibernated);
+	retval = xhci_resume(xhci, msg);
 	return retval;
 }
 
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index b0c8e8efc43b..f36633fa8362 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -478,7 +478,7 @@ static int __maybe_unused xhci_plat_resume(struct device *dev)
 	if (ret)
 		return ret;
 
-	ret = xhci_resume(xhci, 0);
+	ret = xhci_resume(xhci, PMSG_RESUME);
 	if (ret)
 		return ret;
 
@@ -507,7 +507,7 @@ static int __maybe_unused xhci_plat_runtime_resume(struct device *dev)
 	struct usb_hcd  *hcd = dev_get_drvdata(dev);
 	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
 
-	return xhci_resume(xhci, 0);
+	return xhci_resume(xhci, PMSG_AUTO_RESUME);
 }
 
 const struct dev_pm_ops xhci_plat_pm_ops = {
diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c
index c75d93244143..8a9c7deb7686 100644
--- a/drivers/usb/host/xhci-tegra.c
+++ b/drivers/usb/host/xhci-tegra.c
@@ -2272,7 +2272,7 @@ static int tegra_xusb_exit_elpg(struct tegra_xusb *tegra, bool runtime)
 	if (wakeup)
 		tegra_xhci_disable_phy_sleepwalk(tegra);
 
-	err = xhci_resume(xhci, 0);
+	err = xhci_resume(xhci, runtime ? PMSG_AUTO_RESUME : PMSG_RESUME);
 	if (err < 0) {
 		dev_err(tegra->dev, "failed to resume XHCI: %d\n", err);
 		goto disable_phy;
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 78790dc13c5f..65d54c8a2492 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -960,8 +960,9 @@ EXPORT_SYMBOL_GPL(xhci_suspend);
  * This is called when the machine transition from S3/S4 mode.
  *
  */
-int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
+int xhci_resume(struct xhci_hcd *xhci, pm_message_t msg)
 {
+	bool			hibernated = (msg.event == PM_EVENT_RESTORE);
 	u32			command, temp = 0;
 	struct usb_hcd		*hcd = xhci_to_hcd(xhci);
 	int			retval = 0;
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 08d721921b7b..047b290404b4 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -2140,7 +2140,7 @@ int xhci_disable_slot(struct xhci_hcd *xhci, u32 slot_id);
 int xhci_ext_cap_init(struct xhci_hcd *xhci);
 
 int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup);
-int xhci_resume(struct xhci_hcd *xhci, bool hibernated);
+int xhci_resume(struct xhci_hcd *xhci, pm_message_t msg);
 
 irqreturn_t xhci_irq(struct usb_hcd *hcd);
 irqreturn_t xhci_msi_irq(int irq, void *hcd);