[PATCH] all HCDs provide root hub suspend/resume methods

This cleans up a small recent FIXME, ensuring that all the HCDs provide
root hub suspend/resume methods.  It also wraps the calls to those root
suspend routines just like on the PCI "USB_SUSPEND not defined" cases,
so non-PCI bus glue won't be as tempted to behave very differently.

Several of the SOC based OHCI drivers forgot to list those methods;
the patch also adds those missing declarations.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

 drivers/usb/core/hcd.c          |   42 +++++++++++++++++++++++++---------------
 drivers/usb/host/ohci-au1xxx.c  |    5 ++++
 drivers/usb/host/ohci-lh7a404.c |    5 ++++
 drivers/usb/host/ohci-pxa27x.c  |    1
 drivers/usb/host/ohci-s3c2410.c |    1
 drivers/usb/host/ohci-sa1111.c  |    1
 6 files changed, 40 insertions(+), 15 deletions(-)

6 files changed, 40 insertions, 15 deletions

diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 5e8ade07d7f9..375382f9d671 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1431,28 +1431,44 @@ rescan:
 
 /*-------------------------------------------------------------------------*/
 
-/* FIXME make this #ifdef CONFIG_PM ... update root hubs, retest */
-
-#ifdef  CONFIG_USB_SUSPEND
+#ifdef  CONFIG_PM
 
 static int hcd_hub_suspend (struct usb_bus *bus)
 {
         struct usb_hcd          *hcd;
+        int                     status;
 
         hcd = container_of (bus, struct usb_hcd, self);
-        if (hcd->driver->hub_suspend)
-                return hcd->driver->hub_suspend (hcd);
-        return 0;
+        if (!hcd->driver->hub_suspend)
+                return -ENOENT;
+        hcd->state = HC_STATE_QUIESCING;
+        status = hcd->driver->hub_suspend (hcd);
+        if (status == 0)
+                hcd->state = HC_STATE_SUSPENDED;
+        else
+                dev_dbg(&bus->root_hub->dev, "%s fail, err %d\n",
+                                "suspend", status);
+        return status;
 }
 
 static int hcd_hub_resume (struct usb_bus *bus)
 {
         struct usb_hcd          *hcd;
+        int                     status;
 
         hcd = container_of (bus, struct usb_hcd, self);
-        if (hcd->driver->hub_resume)
-                return hcd->driver->hub_resume (hcd);
-        return 0;
+        if (!hcd->driver->hub_resume)
+                return -ENOENT;
+        hcd->state = HC_STATE_RESUMING;
+        status = hcd->driver->hub_resume (hcd);
+        if (status == 0)
+                hcd->state = HC_STATE_RUNNING;
+        else {
+                dev_dbg(&bus->root_hub->dev, "%s fail, err %d\n",
+                                "resume", status);
+                usb_hc_died(hcd);
+        }
+        return status;
 }
 
 /**
@@ -1473,13 +1489,9 @@ void usb_hcd_resume_root_hub (struct usb_hcd *hcd)
                 usb_resume_root_hub (hcd->self.root_hub);
         spin_unlock_irqrestore (&hcd_root_hub_lock, flags);
 }
+EXPORT_SYMBOL_GPL(usb_hcd_resume_root_hub);
 
-#else
-void usb_hcd_resume_root_hub (struct usb_hcd *hcd)
-{
-}
 #endif
-EXPORT_SYMBOL_GPL(usb_hcd_resume_root_hub);
 
 /*-------------------------------------------------------------------------*/
 
@@ -1532,7 +1544,7 @@ static struct usb_operations usb_hcd_operations = {
         .buffer_alloc =         hcd_buffer_alloc,
         .buffer_free =          hcd_buffer_free,
         .disable =              hcd_endpoint_disable,
-#ifdef  CONFIG_USB_SUSPEND
+#ifdef  CONFIG_PM
         .hub_suspend =          hcd_hub_suspend,
         .hub_resume =           hcd_hub_resume,
 #endif
diff --git a/drivers/usb/host/ohci-au1xxx.c b/drivers/usb/host/ohci-au1xxx.c
index 3981bf15c8c7..550d67a554f6 100644
--- a/drivers/usb/host/ohci-au1xxx.c
+++ b/drivers/usb/host/ohci-au1xxx.c
@@ -214,6 +214,11 @@ static const struct hc_driver ohci_au1xxx_hc_driver = {
          */
         .hub_status_data =      ohci_hub_status_data,
         .hub_control =          ohci_hub_control,
+#ifdef  CONFIG_PM
+        .hub_suspend =          ohci_hub_suspend,
+        .hub_resume =           ohci_hub_resume,
+#endif
+        .start_port_reset =     ohci_start_port_reset,
 };
 
 /*-------------------------------------------------------------------------*/
diff --git a/drivers/usb/host/ohci-lh7a404.c b/drivers/usb/host/ohci-lh7a404.c
index 859aca7be753..71d975ae78bd 100644
--- a/drivers/usb/host/ohci-lh7a404.c
+++ b/drivers/usb/host/ohci-lh7a404.c
@@ -193,6 +193,11 @@ static const struct hc_driver ohci_lh7a404_hc_driver = {
          */
         .hub_status_data =      ohci_hub_status_data,
         .hub_control =          ohci_hub_control,
+#ifdef  CONFIG_PM
+        .hub_suspend =          ohci_hub_suspend,
+        .hub_resume =           ohci_hub_resume,
+#endif
+        .start_port_reset =     ohci_start_port_reset,
 };
 
 /*-------------------------------------------------------------------------*/
diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c
index 986c4f656e22..2e7b48502a3d 100644
--- a/drivers/usb/host/ohci-pxa27x.c
+++ b/drivers/usb/host/ohci-pxa27x.c
@@ -282,6 +282,7 @@ static const struct hc_driver ohci_pxa27x_hc_driver = {
         .hub_suspend =          ohci_hub_suspend,
         .hub_resume =           ohci_hub_resume,
 #endif
+        .start_port_reset =     ohci_start_port_reset,
 };
 
 /*-------------------------------------------------------------------------*/
diff --git a/drivers/usb/host/ohci-s3c2410.c b/drivers/usb/host/ohci-s3c2410.c
index 8cf12b2be2a3..922e2a6f46ef 100644
--- a/drivers/usb/host/ohci-s3c2410.c
+++ b/drivers/usb/host/ohci-s3c2410.c
@@ -452,6 +452,7 @@ static const struct hc_driver ohci_s3c2410_hc_driver = {
         .hub_suspend =          ohci_hub_suspend,
         .hub_resume =           ohci_hub_resume,
 #endif
+        .start_port_reset =     ohci_start_port_reset,
 };
 
 /* device driver */
diff --git a/drivers/usb/host/ohci-sa1111.c b/drivers/usb/host/ohci-sa1111.c
index 7dd1f410b7f1..13324b7f9c59 100644
--- a/drivers/usb/host/ohci-sa1111.c
+++ b/drivers/usb/host/ohci-sa1111.c
@@ -239,6 +239,7 @@ static const struct hc_driver ohci_sa1111_hc_driver = {
         .hub_suspend =          ohci_hub_suspend,
         .hub_resume =           ohci_hub_resume,
 #endif
+        .start_port_reset =     ohci_start_port_reset,
 };
 
 /*-------------------------------------------------------------------------*/