Merge commit 'v2.6.39-rc4' into sched/core

Merge reason: Pick up upstream fixes.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

9 files changed, 319 insertions, 180 deletions

diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index 98ded66e8d3f..42abd0f603bf 100644
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -1247,24 +1247,27 @@ static void start_unlink_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
 
 static void scan_async (struct ehci_hcd *ehci)
 {
+        bool                    stopped;
         struct ehci_qh          *qh;
         enum ehci_timer_action  action = TIMER_IO_WATCHDOG;
 
         ehci->stamp = ehci_readl(ehci, &ehci->regs->frame_index);
         timer_action_done (ehci, TIMER_ASYNC_SHRINK);
 rescan:
+        stopped = !HC_IS_RUNNING(ehci_to_hcd(ehci)->state);
         qh = ehci->async->qh_next.qh;
         if (likely (qh != NULL)) {
                 do {
                         /* clean any finished work for this qh */
-                        if (!list_empty (&qh->qtd_list)
-                                        && qh->stamp != ehci->stamp) {
+                        if (!list_empty(&qh->qtd_list) && (stopped ||
+                                        qh->stamp != ehci->stamp)) {
                                 int temp;
 
                                 /* unlinks could happen here; completion
                                  * reporting drops the lock.  rescan using
                                  * the latest schedule, but don't rescan
-                                 * qhs we already finished (no looping).
+                                 * qhs we already finished (no looping)
+                                 * unless the controller is stopped.
                                  */
                                 qh = qh_get (qh);
                                 qh->stamp = ehci->stamp;
@@ -1285,9 +1288,9 @@ rescan:
                          */
                         if (list_empty(&qh->qtd_list)
                                         && qh->qh_state == QH_STATE_LINKED) {
-                                if (!ehci->reclaim
-                                        && ((ehci->stamp - qh->stamp) & 0x1fff)
-                                                >= (EHCI_SHRINK_FRAMES * 8))
+                                if (!ehci->reclaim && (stopped ||
+                                        ((ehci->stamp - qh->stamp) & 0x1fff)
+                                                >= EHCI_SHRINK_FRAMES * 8))
                                         start_unlink_async(ehci, qh);
                                 else
                                         action = TIMER_ASYNC_SHRINK;
diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c
index f50e84ac570a..795345ad45e6 100644
--- a/drivers/usb/host/isp1760-hcd.c
+++ b/drivers/usb/host/isp1760-hcd.c
@@ -295,7 +295,7 @@ static void alloc_mem(struct usb_hcd *hcd, struct isp1760_qtd *qtd)
         }
 
         dev_err(hcd->self.controller,
-                                "%s: Can not allocate %lu bytes of memory\n"
+                                "%s: Cannot allocate %zu bytes of memory\n"
                                 "Current memory map:\n",
                                 __func__, qtd->length);
         for (i = 0; i < BLOCKS; i++) {
diff --git a/drivers/usb/host/ohci-au1xxx.c b/drivers/usb/host/ohci-au1xxx.c
index 17a6043c1fa0..958d985f2951 100644
--- a/drivers/usb/host/ohci-au1xxx.c
+++ b/drivers/usb/host/ohci-au1xxx.c
@@ -33,7 +33,7 @@
 
 #ifdef __LITTLE_ENDIAN
 #define USBH_ENABLE_INIT (USBH_ENABLE_CE | USBH_ENABLE_E | USBH_ENABLE_C)
-#elif __BIG_ENDIAN
+#elif defined(__BIG_ENDIAN)
 #define USBH_ENABLE_INIT (USBH_ENABLE_CE | USBH_ENABLE_E | USBH_ENABLE_C | \
                           USBH_ENABLE_BE)
 #else
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index 1d586d4f7b56..9b166d70ae91 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -84,65 +84,92 @@ int usb_amd_find_chipset_info(void)
 {
         u8 rev = 0;
         unsigned long flags;
+        struct amd_chipset_info info;
+        int ret;
 
         spin_lock_irqsave(&amd_lock, flags);
 
-        amd_chipset.probe_count++;
         /* probe only once */
-        if (amd_chipset.probe_count > 1) {
+        if (amd_chipset.probe_count > 0) {
+                amd_chipset.probe_count++;
                 spin_unlock_irqrestore(&amd_lock, flags);
                 return amd_chipset.probe_result;
         }
+        memset(&info, 0, sizeof(info));
+        spin_unlock_irqrestore(&amd_lock, flags);
 
-        amd_chipset.smbus_dev = pci_get_device(PCI_VENDOR_ID_ATI, 0x4385, NULL);
-        if (amd_chipset.smbus_dev) {
-                rev = amd_chipset.smbus_dev->revision;
+        info.smbus_dev = pci_get_device(PCI_VENDOR_ID_ATI, 0x4385, NULL);
+        if (info.smbus_dev) {
+                rev = info.smbus_dev->revision;
                 if (rev >= 0x40)
-                        amd_chipset.sb_type = 1;
+                        info.sb_type = 1;
                 else if (rev >= 0x30 && rev <= 0x3b)
-                        amd_chipset.sb_type = 3;
+                        info.sb_type = 3;
         } else {
-                amd_chipset.smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
-                                                        0x780b, NULL);
-                if (!amd_chipset.smbus_dev) {
-                        spin_unlock_irqrestore(&amd_lock, flags);
-                        return 0;
+                info.smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
+                                                0x780b, NULL);
+                if (!info.smbus_dev) {
+                        ret = 0;
+                        goto commit;
                 }
-                rev = amd_chipset.smbus_dev->revision;
+
+                rev = info.smbus_dev->revision;
                 if (rev >= 0x11 && rev <= 0x18)
-                        amd_chipset.sb_type = 2;
+                        info.sb_type = 2;
         }
 
-        if (amd_chipset.sb_type == 0) {
-                if (amd_chipset.smbus_dev) {
-                        pci_dev_put(amd_chipset.smbus_dev);
-                        amd_chipset.smbus_dev = NULL;
+        if (info.sb_type == 0) {
+                if (info.smbus_dev) {
+                        pci_dev_put(info.smbus_dev);
+                        info.smbus_dev = NULL;
                 }
-                spin_unlock_irqrestore(&amd_lock, flags);
-                return 0;
+                ret = 0;
+                goto commit;
         }
 
-        amd_chipset.nb_dev = pci_get_device(PCI_VENDOR_ID_AMD, 0x9601, NULL);
-        if (amd_chipset.nb_dev) {
-                amd_chipset.nb_type = 1;
+        info.nb_dev = pci_get_device(PCI_VENDOR_ID_AMD, 0x9601, NULL);
+        if (info.nb_dev) {
+                info.nb_type = 1;
         } else {
-                amd_chipset.nb_dev = pci_get_device(PCI_VENDOR_ID_AMD,
-                                                        0x1510, NULL);
-                if (amd_chipset.nb_dev) {
-                        amd_chipset.nb_type = 2;
-                } else  {
-                        amd_chipset.nb_dev = pci_get_device(PCI_VENDOR_ID_AMD,
-                                                                0x9600, NULL);
-                        if (amd_chipset.nb_dev)
-                                amd_chipset.nb_type = 3;
+                info.nb_dev = pci_get_device(PCI_VENDOR_ID_AMD, 0x1510, NULL);
+                if (info.nb_dev) {
+                        info.nb_type = 2;
+                } else {
+                        info.nb_dev = pci_get_device(PCI_VENDOR_ID_AMD,
+                                                     0x9600, NULL);
+                        if (info.nb_dev)
+                                info.nb_type = 3;
                 }
         }
 
-        amd_chipset.probe_result = 1;
+        ret = info.probe_result = 1;
         printk(KERN_DEBUG "QUIRK: Enable AMD PLL fix\n");
 
-        spin_unlock_irqrestore(&amd_lock, flags);
-        return amd_chipset.probe_result;
+commit:
+
+        spin_lock_irqsave(&amd_lock, flags);
+        if (amd_chipset.probe_count > 0) {
+                /* race - someone else was faster - drop devices */
+
+                /* Mark that we where here */
+                amd_chipset.probe_count++;
+                ret = amd_chipset.probe_result;
+
+                spin_unlock_irqrestore(&amd_lock, flags);
+
+                if (info.nb_dev)
+                        pci_dev_put(info.nb_dev);
+                if (info.smbus_dev)
+                        pci_dev_put(info.smbus_dev);
+
+        } else {
+                /* no race - commit the result */
+                info.probe_count++;
+                amd_chipset = info;
+                spin_unlock_irqrestore(&amd_lock, flags);
+        }
+
+        return ret;
 }
 EXPORT_SYMBOL_GPL(usb_amd_find_chipset_info);
 
@@ -284,6 +311,7 @@ EXPORT_SYMBOL_GPL(usb_amd_quirk_pll_enable);
 
 void usb_amd_dev_put(void)
 {
+        struct pci_dev *nb, *smbus;
         unsigned long flags;
 
         spin_lock_irqsave(&amd_lock, flags);
@@ -294,20 +322,23 @@ void usb_amd_dev_put(void)
                 return;
         }
 
-        if (amd_chipset.nb_dev) {
-                pci_dev_put(amd_chipset.nb_dev);
-                amd_chipset.nb_dev = NULL;
-        }
-        if (amd_chipset.smbus_dev) {
-                pci_dev_put(amd_chipset.smbus_dev);
-                amd_chipset.smbus_dev = NULL;
-        }
+        /* save them to pci_dev_put outside of spinlock */
+        nb    = amd_chipset.nb_dev;
+        smbus = amd_chipset.smbus_dev;
+
+        amd_chipset.nb_dev = NULL;
+        amd_chipset.smbus_dev = NULL;
         amd_chipset.nb_type = 0;
         amd_chipset.sb_type = 0;
         amd_chipset.isoc_reqs = 0;
         amd_chipset.probe_result = 0;
 
         spin_unlock_irqrestore(&amd_lock, flags);
+
+        if (nb)
+                pci_dev_put(nb);
+        if (smbus)
+                pci_dev_put(smbus);
 }
 EXPORT_SYMBOL_GPL(usb_amd_dev_put);
 
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index a003e79aacdc..627f3438028c 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -846,7 +846,7 @@ static u32 xhci_find_real_port_number(struct xhci_hcd *xhci,
                  * Skip ports that don't have known speeds, or have duplicate
                  * Extended Capabilities port speed entries.
                  */
-                if (port_speed == 0 || port_speed == -1)
+                if (port_speed == 0 || port_speed == DUPLICATE_ENTRY)
                         continue;
 
                 /*
@@ -974,6 +974,47 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
         return 0;
 }
 
+/*
+ * Convert interval expressed as 2^(bInterval - 1) == interval into
+ * straight exponent value 2^n == interval.
+ *
+ */
+static unsigned int xhci_parse_exponent_interval(struct usb_device *udev,
+                struct usb_host_endpoint *ep)
+{
+        unsigned int interval;
+
+        interval = clamp_val(ep->desc.bInterval, 1, 16) - 1;
+        if (interval != ep->desc.bInterval - 1)
+                dev_warn(&udev->dev,
+                         "ep %#x - rounding interval to %d microframes\n",
+                         ep->desc.bEndpointAddress,
+                         1 << interval);
+
+        return interval;
+}
+
+/*
+ * Convert bInterval expressed in frames (in 1-255 range) to exponent of
+ * microframes, rounded down to nearest power of 2.
+ */
+static unsigned int xhci_parse_frame_interval(struct usb_device *udev,
+                struct usb_host_endpoint *ep)
+{
+        unsigned int interval;
+
+        interval = fls(8 * ep->desc.bInterval) - 1;
+        interval = clamp_val(interval, 3, 10);
+        if ((1 << interval) != 8 * ep->desc.bInterval)
+                dev_warn(&udev->dev,
+                         "ep %#x - rounding interval to %d microframes, ep desc says %d microframes\n",
+                         ep->desc.bEndpointAddress,
+                         1 << interval,
+                         8 * ep->desc.bInterval);
+
+        return interval;
+}
+
 /* Return the polling or NAK interval.
  *
  * The polling interval is expressed in "microframes".  If xHCI's Interval field
@@ -982,7 +1023,7 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
  * The NAK interval is one NAK per 1 to 255 microframes, or no NAKs if interval
  * is set to 0.
  */
-static inline unsigned int xhci_get_endpoint_interval(struct usb_device *udev,
+static unsigned int xhci_get_endpoint_interval(struct usb_device *udev,
                 struct usb_host_endpoint *ep)
 {
         unsigned int interval = 0;
@@ -991,45 +1032,38 @@ static inline unsigned int xhci_get_endpoint_interval(struct usb_device *udev,
         case USB_SPEED_HIGH:
                 /* Max NAK rate */
                 if (usb_endpoint_xfer_control(&ep->desc) ||
-                                usb_endpoint_xfer_bulk(&ep->desc))
+                    usb_endpoint_xfer_bulk(&ep->desc)) {
                         interval = ep->desc.bInterval;
+                        break;
+                }
                 /* Fall through - SS and HS isoc/int have same decoding */
+
         case USB_SPEED_SUPER:
                 if (usb_endpoint_xfer_int(&ep->desc) ||
-                                usb_endpoint_xfer_isoc(&ep->desc)) {
-                        if (ep->desc.bInterval == 0)
-                                interval = 0;
-                        else
-                                interval = ep->desc.bInterval - 1;
-                        if (interval > 15)
-                                interval = 15;
-                        if (interval != ep->desc.bInterval + 1)
-                                dev_warn(&udev->dev, "ep %#x - rounding interval to %d microframes\n",
-                                                ep->desc.bEndpointAddress, 1 << interval);
+                    usb_endpoint_xfer_isoc(&ep->desc)) {
+                        interval = xhci_parse_exponent_interval(udev, ep);
                 }
                 break;
-        /* Convert bInterval (in 1-255 frames) to microframes and round down to
-         * nearest power of 2.
-         */
+
         case USB_SPEED_FULL:
+                if (usb_endpoint_xfer_int(&ep->desc)) {
+                        interval = xhci_parse_exponent_interval(udev, ep);
+                        break;
+                }
+                /*
+                 * Fall through for isochronous endpoint interval decoding
+                 * since it uses the same rules as low speed interrupt
+                 * endpoints.
+                 */
+
         case USB_SPEED_LOW:
                 if (usb_endpoint_xfer_int(&ep->desc) ||
-                                usb_endpoint_xfer_isoc(&ep->desc)) {
-                        interval = fls(8*ep->desc.bInterval) - 1;
-                        if (interval > 10)
-                                interval = 10;
-                        if (interval < 3)
-                                interval = 3;
-                        if ((1 << interval) != 8*ep->desc.bInterval)
-                                dev_warn(&udev->dev,
-                                                "ep %#x - rounding interval"
-                                                " to %d microframes, "
-                                                "ep desc says %d microframes\n",
-                                                ep->desc.bEndpointAddress,
-                                                1 << interval,
-                                                8*ep->desc.bInterval);
+                    usb_endpoint_xfer_isoc(&ep->desc)) {
+
+                        interval = xhci_parse_frame_interval(udev, ep);
                 }
                 break;
+
         default:
                 BUG();
         }
@@ -1041,7 +1075,7 @@ static inline unsigned int xhci_get_endpoint_interval(struct usb_device *udev,
  * transaction opportunities per microframe", but that goes in the Max Burst
  * endpoint context field.
  */
-static inline u32 xhci_get_endpoint_mult(struct usb_device *udev,
+static u32 xhci_get_endpoint_mult(struct usb_device *udev,
                 struct usb_host_endpoint *ep)
 {
         if (udev->speed != USB_SPEED_SUPER ||
@@ -1050,7 +1084,7 @@ static inline u32 xhci_get_endpoint_mult(struct usb_device *udev,
         return ep->ss_ep_comp.bmAttributes;
 }
 
-static inline u32 xhci_get_endpoint_type(struct usb_device *udev,
+static u32 xhci_get_endpoint_type(struct usb_device *udev,
                 struct usb_host_endpoint *ep)
 {
         int in;
@@ -1084,7 +1118,7 @@ static inline u32 xhci_get_endpoint_type(struct usb_device *udev,
  * Basically, this is the maxpacket size, multiplied by the burst size
  * and mult size.
  */
-static inline u32 xhci_get_max_esit_payload(struct xhci_hcd *xhci,
+static u32 xhci_get_max_esit_payload(struct xhci_hcd *xhci,
                 struct usb_device *udev,
                 struct usb_host_endpoint *ep)
 {
@@ -1727,12 +1761,12 @@ static void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports,
                          * found a similar duplicate.
                          */
                         if (xhci->port_array[i] != major_revision &&
-                                xhci->port_array[i] != (u8) -1) {
+                                xhci->port_array[i] != DUPLICATE_ENTRY) {
                                 if (xhci->port_array[i] == 0x03)
                                         xhci->num_usb3_ports--;
                                 else
                                         xhci->num_usb2_ports--;
-                                xhci->port_array[i] = (u8) -1;
+                                xhci->port_array[i] = DUPLICATE_ENTRY;
                         }
                         /* FIXME: Should we disable the port? */
                         continue;
@@ -1831,7 +1865,7 @@ static int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags)
                 for (i = 0; i < num_ports; i++) {
                         if (xhci->port_array[i] == 0x03 ||
                                         xhci->port_array[i] == 0 ||
-                                        xhci->port_array[i] == -1)
+                                        xhci->port_array[i] == DUPLICATE_ENTRY)
                                 continue;
 
                         xhci->usb2_ports[port_index] =
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index ceea9f33491c..a10494c2f3c7 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -114,6 +114,10 @@ static int xhci_pci_setup(struct usb_hcd *hcd)
         if (pdev->vendor == PCI_VENDOR_ID_NEC)
                 xhci->quirks |= XHCI_NEC_HOST;
 
+        /* AMD PLL quirk */
+        if (pdev->vendor == PCI_VENDOR_ID_AMD && usb_amd_find_chipset_info())
+                xhci->quirks |= XHCI_AMD_PLL_FIX;
+
         /* Make sure the HC is halted. */
         retval = xhci_halt(xhci);
         if (retval)
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index cfc1ad92473f..7437386a9a50 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -93,7 +93,7 @@ dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg,
 /* Does this link TRB point to the first segment in a ring,
  * or was the previous TRB the last TRB on the last segment in the ERST?
  */
-static inline bool last_trb_on_last_seg(struct xhci_hcd *xhci, struct xhci_ring *ring,
+static bool last_trb_on_last_seg(struct xhci_hcd *xhci, struct xhci_ring *ring,
                 struct xhci_segment *seg, union xhci_trb *trb)
 {
         if (ring == xhci->event_ring)
@@ -107,7 +107,7 @@ static inline bool last_trb_on_last_seg(struct xhci_hcd *xhci, struct xhci_ring
  * segment?  I.e. would the updated event TRB pointer step off the end of the
  * event seg?
  */
-static inline int last_trb(struct xhci_hcd *xhci, struct xhci_ring *ring,
+static int last_trb(struct xhci_hcd *xhci, struct xhci_ring *ring,
                 struct xhci_segment *seg, union xhci_trb *trb)
 {
         if (ring == xhci->event_ring)
@@ -116,7 +116,7 @@ static inline int last_trb(struct xhci_hcd *xhci, struct xhci_ring *ring,
                 return (trb->link.control & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK);
 }
 
-static inline int enqueue_is_link_trb(struct xhci_ring *ring)
+static int enqueue_is_link_trb(struct xhci_ring *ring)
 {
         struct xhci_link_trb *link = &ring->enqueue->link;
         return ((link->control & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK));
@@ -592,7 +592,7 @@ void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci,
         ep->ep_state |= SET_DEQ_PENDING;
 }
 
-static inline void xhci_stop_watchdog_timer_in_irq(struct xhci_hcd *xhci,
+static void xhci_stop_watchdog_timer_in_irq(struct xhci_hcd *xhci,
                 struct xhci_virt_ep *ep)
 {
         ep->ep_state &= ~EP_HALT_PENDING;
@@ -619,6 +619,13 @@ static void xhci_giveback_urb_in_irq(struct xhci_hcd *xhci,
 
         /* Only giveback urb when this is the last td in urb */
         if (urb_priv->td_cnt == urb_priv->length) {
+                if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+                        xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs--;
+                        if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs == 0) {
+                                if (xhci->quirks & XHCI_AMD_PLL_FIX)
+                                        usb_amd_quirk_pll_enable();
+                        }
+                }
                 usb_hcd_unlink_urb_from_ep(hcd, urb);
                 xhci_dbg(xhci, "Giveback %s URB %p\n", adjective, urb);
 
@@ -1209,7 +1216,7 @@ static unsigned int find_faked_portnum_from_hw_portnum(struct usb_hcd *hcd,
                  * Skip ports that don't have known speeds, or have duplicate
                  * Extended Capabilities port speed entries.
                  */
-                if (port_speed == 0 || port_speed == -1)
+                if (port_speed == 0 || port_speed == DUPLICATE_ENTRY)
                         continue;
 
                 /*
@@ -1235,6 +1242,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
         u8 major_revision;
         struct xhci_bus_state *bus_state;
         u32 __iomem **port_array;
+        bool bogus_port_status = false;
 
         /* Port status change events always have a successful completion code */
         if (GET_COMP_CODE(event->generic.field[2]) != COMP_SUCCESS) {
@@ -1247,6 +1255,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
         max_ports = HCS_MAX_PORTS(xhci->hcs_params1);
         if ((port_id <= 0) || (port_id > max_ports)) {
                 xhci_warn(xhci, "Invalid port id %d\n", port_id);
+                bogus_port_status = true;
                 goto cleanup;
         }
 
@@ -1258,12 +1267,14 @@ static void handle_port_status(struct xhci_hcd *xhci,
                 xhci_warn(xhci, "Event for port %u not in "
                                 "Extended Capabilities, ignoring.\n",
                                 port_id);
+                bogus_port_status = true;
                 goto cleanup;
         }
-        if (major_revision == (u8) -1) {
+        if (major_revision == DUPLICATE_ENTRY) {
                 xhci_warn(xhci, "Event for port %u duplicated in"
                                 "Extended Capabilities, ignoring.\n",
                                 port_id);
+                bogus_port_status = true;
                 goto cleanup;
         }
 
@@ -1335,6 +1346,13 @@ cleanup:
         /* Update event ring dequeue pointer before dropping the lock */
         inc_deq(xhci, xhci->event_ring, true);
 
+        /* Don't make the USB core poll the roothub if we got a bad port status
+         * change event.  Besides, at that point we can't tell which roothub
+         * (USB 2.0 or USB 3.0) to kick.
+         */
+        if (bogus_port_status)
+                return;
+
         spin_unlock(&xhci->lock);
         /* Pass this up to the core */
         usb_hcd_poll_rh_status(hcd);
@@ -1554,8 +1572,17 @@ td_cleanup:
 
                 urb_priv->td_cnt++;
                 /* Giveback the urb when all the tds are completed */
-                if (urb_priv->td_cnt == urb_priv->length)
+                if (urb_priv->td_cnt == urb_priv->length) {
                         ret = 1;
+                        if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+                                xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs--;
+                                if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs
+                                        == 0) {
+                                        if (xhci->quirks & XHCI_AMD_PLL_FIX)
+                                                usb_amd_quirk_pll_enable();
+                                }
+                        }
+                }
         }
 
         return ret;
@@ -1675,71 +1702,52 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
         struct urb_priv *urb_priv;
         int idx;
         int len = 0;
-        int skip_td = 0;
         union xhci_trb *cur_trb;
         struct xhci_segment *cur_seg;
+        struct usb_iso_packet_descriptor *frame;
         u32 trb_comp_code;
+        bool skip_td = false;
 
         ep_ring = xhci_dma_to_transfer_ring(ep, event->buffer);
         trb_comp_code = GET_COMP_CODE(event->transfer_len);
         urb_priv = td->urb->hcpriv;
         idx = urb_priv->td_cnt;
+        frame = &td->urb->iso_frame_desc[idx];
 
-        if (ep->skip) {
-                /* The transfer is partly done */
-                *status = -EXDEV;
-                td->urb->iso_frame_desc[idx].status = -EXDEV;
-        } else {
-                /* handle completion code */
-                switch (trb_comp_code) {
-                case COMP_SUCCESS:
-                        td->urb->iso_frame_desc[idx].status = 0;
-                        xhci_dbg(xhci, "Successful isoc transfer!\n");
-                        break;
-                case COMP_SHORT_TX:
-                        if (td->urb->transfer_flags & URB_SHORT_NOT_OK)
-                                td->urb->iso_frame_desc[idx].status =
-                                         -EREMOTEIO;
-                        else
-                                td->urb->iso_frame_desc[idx].status = 0;
-                        break;
-                case COMP_BW_OVER:
-                        td->urb->iso_frame_desc[idx].status = -ECOMM;
-                        skip_td = 1;
-                        break;
-                case COMP_BUFF_OVER:
-                case COMP_BABBLE:
-                        td->urb->iso_frame_desc[idx].status = -EOVERFLOW;
-                        skip_td = 1;
-                        break;
-                case COMP_STALL:
-                        td->urb->iso_frame_desc[idx].status = -EPROTO;
-                        skip_td = 1;
-                        break;
-                case COMP_STOP:
-                case COMP_STOP_INVAL:
-                        break;
-                default:
-                        td->urb->iso_frame_desc[idx].status = -1;
-                        break;
-                }
-        }
-
-        /* calc actual length */
-        if (ep->skip) {
-                td->urb->iso_frame_desc[idx].actual_length = 0;
-                /* Update ring dequeue pointer */
-                while (ep_ring->dequeue != td->last_trb)
-                        inc_deq(xhci, ep_ring, false);
-                inc_deq(xhci, ep_ring, false);
-                return finish_td(xhci, td, event_trb, event, ep, status, true);
+        /* handle completion code */
+        switch (trb_comp_code) {
+        case COMP_SUCCESS:
+                frame->status = 0;
+                xhci_dbg(xhci, "Successful isoc transfer!\n");
+                break;
+        case COMP_SHORT_TX:
+                frame->status = td->urb->transfer_flags & URB_SHORT_NOT_OK ?
+                                -EREMOTEIO : 0;
+                break;
+        case COMP_BW_OVER:
+                frame->status = -ECOMM;
+                skip_td = true;
+                break;
+        case COMP_BUFF_OVER:
+        case COMP_BABBLE:
+                frame->status = -EOVERFLOW;
+                skip_td = true;
+                break;
+        case COMP_STALL:
+                frame->status = -EPROTO;
+                skip_td = true;
+                break;
+        case COMP_STOP:
+        case COMP_STOP_INVAL:
+                break;
+        default:
+                frame->status = -1;
+                break;
         }
 
-        if (trb_comp_code == COMP_SUCCESS || skip_td == 1) {
-                td->urb->iso_frame_desc[idx].actual_length =
-                        td->urb->iso_frame_desc[idx].length;
-                td->urb->actual_length +=
-                        td->urb->iso_frame_desc[idx].length;
+        if (trb_comp_code == COMP_SUCCESS || skip_td) {
+                frame->actual_length = frame->length;
+                td->urb->actual_length += frame->length;
         } else {
                 for (cur_trb = ep_ring->dequeue,
                      cur_seg = ep_ring->deq_seg; cur_trb != event_trb;
@@ -1755,7 +1763,7 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
                         TRB_LEN(event->transfer_len);
 
                 if (trb_comp_code != COMP_STOP_INVAL) {
-                        td->urb->iso_frame_desc[idx].actual_length = len;
+                        frame->actual_length = len;
                         td->urb->actual_length += len;
                 }
         }
@@ -1766,6 +1774,35 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
         return finish_td(xhci, td, event_trb, event, ep, status, false);
 }
 
+static int skip_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
+                        struct xhci_transfer_event *event,
+                        struct xhci_virt_ep *ep, int *status)
+{
+        struct xhci_ring *ep_ring;
+        struct urb_priv *urb_priv;
+        struct usb_iso_packet_descriptor *frame;
+        int idx;
+
+        ep_ring = xhci_dma_to_transfer_ring(ep, event->buffer);
+        urb_priv = td->urb->hcpriv;
+        idx = urb_priv->td_cnt;
+        frame = &td->urb->iso_frame_desc[idx];
+
+        /* The transfer is partly done */
+        *status = -EXDEV;
+        frame->status = -EXDEV;
+
+        /* calc actual length */
+        frame->actual_length = 0;
+
+        /* Update ring dequeue pointer */
+        while (ep_ring->dequeue != td->last_trb)
+                inc_deq(xhci, ep_ring, false);
+        inc_deq(xhci, ep_ring, false);
+
+        return finish_td(xhci, td, NULL, event, ep, status, true);
+}
+
 /*
  * Process bulk and interrupt tds, update urb status and actual_length.
  */
@@ -2024,36 +2061,42 @@ static int handle_tx_event(struct xhci_hcd *xhci,
                 }
 
                 td = list_entry(ep_ring->td_list.next, struct xhci_td, td_list);
+
                 /* Is this a TRB in the currently executing TD? */
                 event_seg = trb_in_td(ep_ring->deq_seg, ep_ring->dequeue,
                                 td->last_trb, event_dma);
-                if (event_seg && ep->skip) {
+                if (!event_seg) {
+                        if (!ep->skip ||
+                            !usb_endpoint_xfer_isoc(&td->urb->ep->desc)) {
+                                /* HC is busted, give up! */
+                                xhci_err(xhci,
+                                        "ERROR Transfer event TRB DMA ptr not "
+                                        "part of current TD\n");
+                                return -ESHUTDOWN;
+                        }
+
+                        ret = skip_isoc_td(xhci, td, event, ep, &status);
+                        goto cleanup;
+                }
+
+                if (ep->skip) {
                         xhci_dbg(xhci, "Found td. Clear skip flag.\n");
                         ep->skip = false;
                 }
-                if (!event_seg &&
-                   (!ep->skip || !usb_endpoint_xfer_isoc(&td->urb->ep->desc))) {
-                        /* HC is busted, give up! */
-                        xhci_err(xhci, "ERROR Transfer event TRB DMA ptr not "
-                                        "part of current TD\n");
-                        return -ESHUTDOWN;
-                }
 
-                if (event_seg) {
-                        event_trb = &event_seg->trbs[(event_dma -
-                                         event_seg->dma) / sizeof(*event_trb)];
-                        /*
-                         * No-op TRB should not trigger interrupts.
-                         * If event_trb is a no-op TRB, it means the
-                         * corresponding TD has been cancelled. Just ignore
-                         * the TD.
-                         */
-                        if ((event_trb->generic.field[3] & TRB_TYPE_BITMASK)
-                                         == TRB_TYPE(TRB_TR_NOOP)) {
-                                xhci_dbg(xhci, "event_trb is a no-op TRB. "
-                                                "Skip it\n");
-                                goto cleanup;
-                        }
+                event_trb = &event_seg->trbs[(event_dma - event_seg->dma) /
+                                                sizeof(*event_trb)];
+                /*
+                 * No-op TRB should not trigger interrupts.
+                 * If event_trb is a no-op TRB, it means the
+                 * corresponding TD has been cancelled. Just ignore
+                 * the TD.
+                 */
+                if ((event_trb->generic.field[3] & TRB_TYPE_BITMASK)
+                                 == TRB_TYPE(TRB_TR_NOOP)) {
+                        xhci_dbg(xhci,
+                                 "event_trb is a no-op TRB. Skip it\n");
+                        goto cleanup;
                 }
 
                 /* Now update the urb's actual_length and give back to
@@ -3126,6 +3169,12 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
                 }
         }
 
+        if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs == 0) {
+                if (xhci->quirks & XHCI_AMD_PLL_FIX)
+                        usb_amd_quirk_pll_disable();
+        }
+        xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs++;
+
         giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id,
                         start_cycle, start_trb);
         return 0;
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 196e0181b2ed..81b976e45880 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -550,6 +550,9 @@ void xhci_stop(struct usb_hcd *hcd)
         del_timer_sync(&xhci->event_ring_timer);
 #endif
 
+        if (xhci->quirks & XHCI_AMD_PLL_FIX)
+                usb_amd_dev_put();
+
         xhci_dbg(xhci, "// Disabling event ring interrupts\n");
         temp = xhci_readl(xhci, &xhci->op_regs->status);
         xhci_writel(xhci, temp & ~STS_EINT, &xhci->op_regs->status);
@@ -771,7 +774,9 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
 
         /* If restore operation fails, re-initialize the HC during resume */
         if ((temp & STS_SRE) || hibernated) {
-                usb_root_hub_lost_power(hcd->self.root_hub);
+                /* Let the USB core know _both_ roothubs lost power. */
+                usb_root_hub_lost_power(xhci->main_hcd->self.root_hub);
+                usb_root_hub_lost_power(xhci->shared_hcd->self.root_hub);
 
                 xhci_dbg(xhci, "Stop HCD\n");
                 xhci_halt(xhci);
@@ -2386,10 +2391,18 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev)
         /* Everything but endpoint 0 is disabled, so free or cache the rings. */
         last_freed_endpoint = 1;
         for (i = 1; i < 31; ++i) {
-                if (!virt_dev->eps[i].ring)
-                        continue;
-                xhci_free_or_cache_endpoint_ring(xhci, virt_dev, i);
-                last_freed_endpoint = i;
+                struct xhci_virt_ep *ep = &virt_dev->eps[i];
+
+                if (ep->ep_state & EP_HAS_STREAMS) {
+                        xhci_free_stream_info(xhci, ep->stream_info);
+                        ep->stream_info = NULL;
+                        ep->ep_state &= ~EP_HAS_STREAMS;
+                }
+
+                if (ep->ring) {
+                        xhci_free_or_cache_endpoint_ring(xhci, virt_dev, i);
+                        last_freed_endpoint = i;
+                }
         }
         xhci_dbg(xhci, "Output context after successful reset device cmd:\n");
         xhci_dbg_ctx(xhci, virt_dev->out_ctx, last_freed_endpoint);
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 07e263063e37..ba1be6b7cc6d 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -30,6 +30,7 @@
 
 /* Code sharing between pci-quirks and xhci hcd */
 #include        "xhci-ext-caps.h"
+#include "pci-quirks.h"
 
 /* xHCI PCI Configuration Registers */
 #define XHCI_SBRN_OFFSET        (0x60)
@@ -232,7 +233,7 @@ struct xhci_op_regs {
  * notification type that matches a bit set in this bit field.
  */
 #define DEV_NOTE_MASK           (0xffff)
-#define ENABLE_DEV_NOTE(x)      (1 << x)
+#define ENABLE_DEV_NOTE(x)      (1 << (x))
 /* Most of the device notification types should only be used for debug.
  * SW does need to pay attention to function wake notifications.
  */
@@ -348,6 +349,9 @@ struct xhci_op_regs {
 /* Initiate a warm port reset - complete when PORT_WRC is '1' */
 #define PORT_WR         (1 << 31)
 
+/* We mark duplicate entries with -1 */
+#define DUPLICATE_ENTRY ((u8)(-1))
+
 /* Port Power Management Status and Control - port_power_base bitmasks */
 /* Inactivity timer value for transitions into U1, in microseconds.
  * Timeout can be up to 127us.  0xFF means an infinite timeout.
@@ -601,11 +605,11 @@ struct xhci_ep_ctx {
 #define EP_STATE_STOPPED        3
 #define EP_STATE_ERROR          4
 /* Mult - Max number of burtst within an interval, in EP companion desc. */
-#define EP_MULT(p)              ((p & 0x3) << 8)
+#define EP_MULT(p)              (((p) & 0x3) << 8)
 /* bits 10:14 are Max Primary Streams */
 /* bit 15 is Linear Stream Array */
 /* Interval - period between requests to an endpoint - 125u increments. */
-#define EP_INTERVAL(p)          ((p & 0xff) << 16)
+#define EP_INTERVAL(p)          (((p) & 0xff) << 16)
 #define EP_INTERVAL_TO_UFRAMES(p)               (1 << (((p) >> 16) & 0xff))
 #define EP_MAXPSTREAMS_MASK     (0x1f << 10)
 #define EP_MAXPSTREAMS(p)       (((p) << 10) & EP_MAXPSTREAMS_MASK)
@@ -1276,6 +1280,7 @@ struct xhci_hcd {
 #define XHCI_LINK_TRB_QUIRK     (1 << 0)
 #define XHCI_RESET_EP_QUIRK     (1 << 1)
 #define XHCI_NEC_HOST           (1 << 2)
+#define XHCI_AMD_PLL_FIX        (1 << 3)
         /* There are two roothubs to keep track of bus suspend info for */
         struct xhci_bus_state   bus_state[2];
         /* Is each xHCI roothub port a USB 3.0, USB 2.0, or USB 1.1 port? */