USB: clarify usage of hcd->suspend/resume methods
The .suspend and .resume method pointers in struct usb_hcd have not
been fully understood by host-controller driver writers. They are
meant for use with PCI controllers; other platform-specific drivers
generally should not refer to them.
To try and clarify matters, this patch (as1065) renames those methods
to .pci_suspend and .pci_resume. It eliminates corresponding dead code
and bogus references in the ohci-ssb and u132-hcd drivers.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 7c8a2cc..a0afc78 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -353,8 +353,8 @@
.reset = ehci_pci_setup,
.start = ehci_run,
#ifdef CONFIG_PM
- .suspend = ehci_pci_suspend,
- .resume = ehci_pci_resume,
+ .pci_suspend = ehci_pci_suspend,
+ .pci_resume = ehci_pci_resume,
#endif
.stop = ehci_stop,
.shutdown = ehci_shutdown,
diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
index b0e2275..40b62a3 100644
--- a/drivers/usb/host/ohci-pci.c
+++ b/drivers/usb/host/ohci-pci.c
@@ -347,9 +347,8 @@
.shutdown = ohci_shutdown,
#ifdef CONFIG_PM
- /* these suspend/resume entries are for upstream PCI glue ONLY */
- .suspend = ohci_pci_suspend,
- .resume = ohci_pci_resume,
+ .pci_suspend = ohci_pci_suspend,
+ .pci_resume = ohci_pci_resume,
#endif
/*
diff --git a/drivers/usb/host/ohci-ssb.c b/drivers/usb/host/ohci-ssb.c
index 6e9c2d6..7879f2f 100644
--- a/drivers/usb/host/ohci-ssb.c
+++ b/drivers/usb/host/ohci-ssb.c
@@ -60,36 +60,6 @@
return err;
}
-#ifdef CONFIG_PM
-static int ssb_ohci_hcd_suspend(struct usb_hcd *hcd, pm_message_t message)
-{
- struct ssb_ohci_device *ohcidev = hcd_to_ssb_ohci(hcd);
- struct ohci_hcd *ohci = &ohcidev->ohci;
- unsigned long flags;
-
- spin_lock_irqsave(&ohci->lock, flags);
-
- ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
- ohci_readl(ohci, &ohci->regs->intrdisable); /* commit write */
-
- /* make sure snapshot being resumed re-enumerates everything */
- if (message.event == PM_EVENT_PRETHAW)
- ohci_usb_reset(ohci);
-
- clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
-
- spin_unlock_irqrestore(&ohci->lock, flags);
- return 0;
-}
-
-static int ssb_ohci_hcd_resume(struct usb_hcd *hcd)
-{
- set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
- usb_hcd_resume_root_hub(hcd);
- return 0;
-}
-#endif /* CONFIG_PM */
-
static const struct hc_driver ssb_ohci_hc_driver = {
.description = "ssb-usb-ohci",
.product_desc = "SSB OHCI Controller",
@@ -103,11 +73,6 @@
.stop = ohci_stop,
.shutdown = ohci_shutdown,
-#ifdef CONFIG_PM
- .suspend = ssb_ohci_hcd_suspend,
- .resume = ssb_ohci_hcd_resume,
-#endif
-
.urb_enqueue = ohci_urb_enqueue,
.urb_dequeue = ohci_urb_dequeue,
.endpoint_disable = ohci_endpoint_disable,
diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c
index 4616a88..9b6323f 100644
--- a/drivers/usb/host/u132-hcd.c
+++ b/drivers/usb/host/u132-hcd.c
@@ -2946,34 +2946,6 @@
#ifdef CONFIG_PM
-static int u132_hcd_suspend(struct usb_hcd *hcd, pm_message_t message)
-{
- struct u132 *u132 = hcd_to_u132(hcd);
- if (u132->going > 1) {
- dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
- , u132->going);
- return -ENODEV;
- } else if (u132->going > 0) {
- dev_err(&u132->platform_dev->dev, "device is being removed\n");
- return -ESHUTDOWN;
- } else
- return 0;
-}
-
-static int u132_hcd_resume(struct usb_hcd *hcd)
-{
- struct u132 *u132 = hcd_to_u132(hcd);
- if (u132->going > 1) {
- dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
- , u132->going);
- return -ENODEV;
- } else if (u132->going > 0) {
- dev_err(&u132->platform_dev->dev, "device is being removed\n");
- return -ESHUTDOWN;
- } else
- return 0;
-}
-
static int u132_bus_suspend(struct usb_hcd *hcd)
{
struct u132 *u132 = hcd_to_u132(hcd);
@@ -3003,8 +2975,6 @@
}
#else
-#define u132_hcd_suspend NULL
-#define u132_hcd_resume NULL
#define u132_bus_suspend NULL
#define u132_bus_resume NULL
#endif
@@ -3015,8 +2985,6 @@
.flags = HCD_USB11 | HCD_MEMORY,
.reset = u132_hcd_reset,
.start = u132_hcd_start,
- .suspend = u132_hcd_suspend,
- .resume = u132_hcd_resume,
.stop = u132_hcd_stop,
.urb_enqueue = u132_urb_enqueue,
.urb_dequeue = u132_urb_dequeue,
diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c
index ec98789..fec9872 100644
--- a/drivers/usb/host/uhci-hcd.c
+++ b/drivers/usb/host/uhci-hcd.c
@@ -737,7 +737,7 @@
return rc;
}
-static int uhci_suspend(struct usb_hcd *hcd, pm_message_t message)
+static int uhci_pci_suspend(struct usb_hcd *hcd, pm_message_t message)
{
struct uhci_hcd *uhci = hcd_to_uhci(hcd);
int rc = 0;
@@ -774,7 +774,7 @@
return rc;
}
-static int uhci_resume(struct usb_hcd *hcd)
+static int uhci_pci_resume(struct usb_hcd *hcd)
{
struct uhci_hcd *uhci = hcd_to_uhci(hcd);
@@ -872,8 +872,8 @@
.reset = uhci_init,
.start = uhci_start,
#ifdef CONFIG_PM
- .suspend = uhci_suspend,
- .resume = uhci_resume,
+ .pci_suspend = uhci_pci_suspend,
+ .pci_resume = uhci_pci_resume,
.bus_suspend = uhci_rh_suspend,
.bus_resume = uhci_rh_resume,
#endif
