Merge 3.0-rc2 into usb-linus as it's needed by some USB patches

[deliverable/linux.git] / drivers / usb / host / xhci.c

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 743cf80debb1b3a53d2087a1fbda38b742e785da..d0a65401670b4ae1dd087a917f96adfd429acaf3 100644 (file)
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -430,12 +430,19 @@ int xhci_run(struct usb_hcd *hcd)
                free_irq(hcd->irq, hcd);
        hcd->irq = -1;
 
+       /* Some Fresco Logic host controllers advertise MSI, but fail to
+        * generate interrupts.  Don't even try to enable MSI.
+        */
+       if (xhci->quirks & XHCI_BROKEN_MSI)
+               goto legacy_irq;
+
        ret = xhci_setup_msix(xhci);
        if (ret)
                /* fall back to msi*/
                ret = xhci_setup_msi(xhci);
 
        if (ret) {
+legacy_irq:
                /* fall back to legacy interrupt*/
                ret = request_irq(pdev->irq, &usb_hcd_irq, IRQF_SHARED,
                                        hcd->irq_descr, hcd);
@@ -1848,8 +1855,8 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
 
        /* Free any rings that were dropped, but not changed. */
        for (i = 1; i < 31; ++i) {
-               if ((ctrl_ctx->drop_flags & (1 << (i + 1))) &&
-                               !(ctrl_ctx->add_flags & (1 << (i + 1))))
+               if ((le32_to_cpu(ctrl_ctx->drop_flags) & (1 << (i + 1))) &&
+                   !(le32_to_cpu(ctrl_ctx->add_flags) & (1 << (i + 1))))
                        xhci_free_or_cache_endpoint_ring(xhci, virt_dev, i);
        }
        xhci_zero_in_ctx(xhci, virt_dev);
@@ -2466,6 +2473,7 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev)
        struct xhci_command *reset_device_cmd;
        int timeleft;
        int last_freed_endpoint;
+       struct xhci_slot_ctx *slot_ctx;
 
        ret = xhci_check_args(hcd, udev, NULL, 0, false, __func__);
        if (ret <= 0)
@@ -2498,6 +2506,12 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev)
                        return -EINVAL;
        }
 
+       /* If device is not setup, there is no point in resetting it */
+       slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->out_ctx);
+       if (GET_SLOT_STATE(le32_to_cpu(slot_ctx->dev_state)) ==
+                                               SLOT_STATE_DISABLED)
+               return 0;
+
        xhci_dbg(xhci, "Resetting device with slot ID %u\n", slot_id);
        /* Allocate the command structure that holds the struct completion.
         * Assume we're in process context, since the normal device reset