Merge branch 'linus'

1 files changed, 32 insertions, 22 deletions

diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index a4b12404ae08..544f7589912f 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -443,11 +443,16 @@ ohci_reboot (struct notifier_block *block, unsigned long code, void *null)
 static int ohci_init (struct ohci_hcd *ohci)
 {
         int ret;
+        struct usb_hcd *hcd = ohci_to_hcd(ohci);
 
         disable (ohci);
-        ohci->regs = ohci_to_hcd(ohci)->regs;
+        ohci->regs = hcd->regs;
         ohci->next_statechange = jiffies;
 
+        /* REVISIT this BIOS handshake is now moved into PCI "quirks", and
+         * was never needed for most non-PCI systems ... remove the code?
+         */
+
 #ifndef IR_DISABLE
         /* SMM owns the HC?  not for long! */
         if (!no_handshake && ohci_readl (ohci,
@@ -478,8 +483,10 @@ static int ohci_init (struct ohci_hcd *ohci)
 
         /* Disable HC interrupts */
         ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
-        // flush the writes
-        (void) ohci_readl (ohci, &ohci->regs->control);
+
+        /* flush the writes, and save key bits like RWC */
+        if (ohci_readl (ohci, &ohci->regs->control) & OHCI_CTRL_RWC)
+                ohci->hc_control |= OHCI_CTRL_RWC;
 
         /* Read the number of ports unless overridden */
         if (ohci->num_ports == 0)
@@ -488,16 +495,19 @@ static int ohci_init (struct ohci_hcd *ohci)
         if (ohci->hcca)
                 return 0;
 
-        ohci->hcca = dma_alloc_coherent (ohci_to_hcd(ohci)->self.controller,
+        ohci->hcca = dma_alloc_coherent (hcd->self.controller,
                         sizeof *ohci->hcca, &ohci->hcca_dma, 0);
         if (!ohci->hcca)
                 return -ENOMEM;
 
         if ((ret = ohci_mem_init (ohci)) < 0)
-                ohci_stop (ohci_to_hcd(ohci));
+                ohci_stop (hcd);
+        else {
+                register_reboot_notifier (&ohci->reboot_notifier);
+                create_debug_files (ohci);
+        }
 
         return ret;
-
 }
 
 /*-------------------------------------------------------------------------*/
@@ -510,6 +520,7 @@ static int ohci_run (struct ohci_hcd *ohci)
 {
         u32                     mask, temp;
         int                     first = ohci->fminterval == 0;
+        struct usb_hcd          *hcd = ohci_to_hcd(ohci);
 
         disable (ohci);
 
@@ -525,18 +536,17 @@ static int ohci_run (struct ohci_hcd *ohci)
                 /* also: power/overcurrent flags in roothub.a */
         }
 
-        /* Reset USB nearly "by the book".  RemoteWakeupConnected
-         * saved if boot firmware (BIOS/SMM/...) told us it's connected
-         * (for OHCI integrated on mainboard, it normally is)
+        /* Reset USB nearly "by the book".  RemoteWakeupConnected was
+         * saved if boot firmware (BIOS/SMM/...) told us it's connected,
+         * or if bus glue did the same (e.g. for PCI add-in cards with
+         * PCI PM support).
          */
-        ohci->hc_control = ohci_readl (ohci, &ohci->regs->control);
         ohci_dbg (ohci, "resetting from state '%s', control = 0x%x\n",
                         hcfs2string (ohci->hc_control & OHCI_CTRL_HCFS),
-                        ohci->hc_control);
-
-        if (ohci->hc_control & OHCI_CTRL_RWC
-                        && !(ohci->flags & OHCI_QUIRK_AMD756))
-                ohci_to_hcd(ohci)->can_wakeup = 1;
+                        ohci_readl (ohci, &ohci->regs->control));
+        if ((ohci->hc_control & OHCI_CTRL_RWC) != 0
+                        && !device_may_wakeup(hcd->self.controller))
+                device_init_wakeup(hcd->self.controller, 1);
 
         switch (ohci->hc_control & OHCI_CTRL_HCFS) {
         case OHCI_USB_OPER:
@@ -632,7 +642,7 @@ retry:
         ohci->hc_control &= OHCI_CTRL_RWC;
         ohci->hc_control |= OHCI_CONTROL_INIT | OHCI_USB_OPER;
         ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
-        ohci_to_hcd(ohci)->state = HC_STATE_RUNNING;
+        hcd->state = HC_STATE_RUNNING;
 
         /* wake on ConnectStatusChange, matching external hubs */
         ohci_writel (ohci, RH_HS_DRWE, &ohci->regs->roothub.status);
@@ -667,15 +677,10 @@ retry:
 
         // POTPGT delay is bits 24-31, in 2 ms units.
         mdelay ((temp >> 23) & 0x1fe);
-        ohci_to_hcd(ohci)->state = HC_STATE_RUNNING;
+        hcd->state = HC_STATE_RUNNING;
 
         ohci_dump (ohci, 1);
 
-        if (ohci_to_hcd(ohci)->self.root_hub == NULL) {
-                register_reboot_notifier (&ohci->reboot_notifier);
-                create_debug_files (ohci);
-        }
-
         return 0;
 }
 
@@ -905,6 +910,10 @@ MODULE_LICENSE ("GPL");
 #include "ohci-ppc-soc.c"
 #endif
 
+#ifdef CONFIG_ARCH_AT91RM9200
+#include "ohci-at91.c"
+#endif
+
 #if !(defined(CONFIG_PCI) \
       || defined(CONFIG_SA1111) \
       || defined(CONFIG_ARCH_S3C2410) \
@@ -913,6 +922,7 @@ MODULE_LICENSE ("GPL");
       || defined (CONFIG_PXA27x) \
       || defined (CONFIG_SOC_AU1X00) \
       || defined (CONFIG_USB_OHCI_HCD_PPC_SOC) \
+      || defined (CONFIG_ARCH_AT91RM9200) \
         )
 #error "missing bus glue for ohci-hcd"
 #endif