From: david-b@pacbell.net <david-b@pacbell.net>
Date: Wed, 29 Jun 2005 13:59:14 +0000 (-0700)
Subject: [PATCH] USB: ohci-omap pm updates
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b404a5b02abf84812e5333bda201af464925d7a6;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[PATCH] USB: ohci-omap pm updates

The recent "pm_message_t" changes removed functionality from the Linux
PM framework.  This patch removes it from the OMAP OHCI too, removing
the distinction between (previous) PM_SUSPEND_MEM and PM_SUSPEND_DISK
state transitions ... now the only suspend semantics supportable are
what was previously PM_SUSPEND_DISK (4) and is now "PMSG_SUSPEND" (3).

From: Todd Poynor <tpoynor@mvista.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c
index b62d69937694..5cde76faab93 100644
--- a/drivers/usb/host/ohci-omap.c
+++ b/drivers/usb/host/ohci-omap.c
@@ -456,34 +456,22 @@ static int ohci_hcd_omap_drv_remove(struct device *dev)
 
 #ifdef	CONFIG_PM
 
-/* states match PCI usage, always suspending the root hub except that
- * 4 ~= D3cold (ACPI D3) with clock off (resume sees reset).
- *
- * FIXME: above comment is not right, and code is wrong, too :-(.
- */
-
-static int ohci_omap_suspend(struct device *dev, pm_message_t state, u32 level)
+static int ohci_omap_suspend(struct device *dev, pm_message_t message, u32 level)
 {
 	struct ohci_hcd	*ohci = hcd_to_ohci(dev_get_drvdata(dev));
 	int		status = -EINVAL;
 
 	if (level != SUSPEND_POWER_DOWN)
 		return 0;
-	if (state <= dev->power.power_state)
-		return 0;
 
-	dev_dbg(dev, "suspend to %d\n", state);
 	down(&ohci_to_hcd(ohci)->self.root_hub->serialize);
 	status = ohci_hub_suspend(ohci_to_hcd(ohci));
 	if (status == 0) {
-		if (state >= 4) {
-			omap_ohci_clock_power(0);
-			ohci_to_hcd(ohci)->self.root_hub->state =
-					USB_STATE_SUSPENDED;
-			state = 4;
-		}
+		omap_ohci_clock_power(0);
+		ohci_to_hcd(ohci)->self.root_hub->state =
+			USB_STATE_SUSPENDED;
 		ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
-		dev->power.power_state = state;
+		dev->power.power_state = PMSG_SUSPEND;
 	}
 	up(&ohci_to_hcd(ohci)->self.root_hub->serialize);
 	return status;
@@ -497,29 +485,20 @@ static int ohci_omap_resume(struct device *dev, u32 level)
 	if (level != RESUME_POWER_ON)
 		return 0;
 
-	switch (dev->power.power_state) {
-	case 0:
-		break;
-	case 4:
-		if (time_before(jiffies, ohci->next_statechange))
-			msleep(5);
-		ohci->next_statechange = jiffies;
-		omap_ohci_clock_power(1);
-		/* FALLTHROUGH */
-	default:
-		dev_dbg(dev, "resume from %d\n", dev->power.power_state);
+	if (time_before(jiffies, ohci->next_statechange))
+		msleep(5);
+	ohci->next_statechange = jiffies;
+	omap_ohci_clock_power(1);
 #ifdef	CONFIG_USB_SUSPEND
-		/* get extra cleanup even if remote wakeup isn't in use */
-		status = usb_resume_device(ohci_to_hcd(ohci)->self.root_hub);
+	/* get extra cleanup even if remote wakeup isn't in use */
+	status = usb_resume_device(ohci_to_hcd(ohci)->self.root_hub);
 #else
-		down(&ohci_to_hcd(ohci)->self.root_hub->serialize);
-		status = ohci_hub_resume(ohci_to_hcd(ohci));
-		up(&ohci_to_hcd(ohci)->self.root_hub->serialize);
+	down(&ohci_to_hcd(ohci)->self.root_hub->serialize);
+	status = ohci_hub_resume(ohci_to_hcd(ohci));
+	up(&ohci_to_hcd(ohci)->self.root_hub->serialize);
 #endif
-		if (status == 0)
-			dev->power.power_state = 0;
-		break;
-	}
+	if (status == 0)
+		dev->power.power_state = PMSG_ON;
 	return status;
 }