5 files changed, 34 insertions, 11 deletions

diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index e113fd73aeae..f9a332775c47 100644
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -1581,6 +1581,10 @@ iso_stream_schedule (
 	else
 		next = (now + 2 + 7) & ~0x07;	/* full frame cache */
 
+	/* If needed, initialize last_iso_frame so that this URB will be seen */
+	if (ehci->isoc_count == 0)
+		ehci->last_iso_frame = now >> 3;
+
 	/*
 	 * Use ehci->last_iso_frame as the base.  There can't be any
 	 * TDs scheduled for earlier than that.
@@ -1600,11 +1604,11 @@ iso_stream_schedule (
 	 */
 	now2 = (now - base) & (mod - 1);
 
-	/* Is the schedule already full? */
+	/* Is the schedule about to wrap around? */
 	if (unlikely(!empty && start < period)) {
-		ehci_dbg(ehci, "iso sched full %p (%u-%u < %u mod %u)\n",
+		ehci_dbg(ehci, "request %p would overflow (%u-%u < %u mod %u)\n",
 				urb, stream->next_uframe, base, period, mod);
-		status = -ENOSPC;
+		status = -EFBIG;
 		goto fail;
 	}
 
@@ -1671,10 +1675,6 @@ iso_stream_schedule (
 	urb->start_frame = start & (mod - 1);
 	if (!stream->highspeed)
 		urb->start_frame >>= 3;
-
-	/* Make sure scan_isoc() sees these */
-	if (ehci->isoc_count == 0)
-		ehci->last_iso_frame = now >> 3;
 	return status;
 
  fail:
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index 19a9af1b4d74..ff9af29b4e9f 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -451,7 +451,7 @@ static int tegra_ehci_probe(struct platform_device *pdev)
 
 	u_phy = devm_usb_get_phy_by_phandle(&pdev->dev, "nvidia,phy", 0);
 	if (IS_ERR(u_phy)) {
-		err = PTR_ERR(u_phy);
+		err = -EPROBE_DEFER;
 		goto cleanup_clk_en;
 	}
 	hcd->usb_phy = u_phy;
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index dd483c13565b..ce636466edb7 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -567,7 +567,8 @@ static void quirk_usb_handoff_ohci(struct pci_dev *pdev)
 {
 	void __iomem *base;
 	u32 control;
-	u32 fminterval;
+	u32 fminterval = 0;
+	bool no_fminterval = false;
 	int cnt;
 
 	if (!mmio_resource_enabled(pdev, 0))
@@ -577,6 +578,13 @@ static void quirk_usb_handoff_ohci(struct pci_dev *pdev)
 	if (base == NULL)
 		return;
 
+	/*
+	 * ULi M5237 OHCI controller locks the whole system when accessing
+	 * the OHCI_FMINTERVAL offset.
+	 */
+	if (pdev->vendor == PCI_VENDOR_ID_AL && pdev->device == 0x5237)
+		no_fminterval = true;
+
 	control = readl(base + OHCI_CONTROL);
 
 /* On PA-RISC, PDC can leave IR set incorrectly; ignore it there. */
@@ -615,7 +623,9 @@ static void quirk_usb_handoff_ohci(struct pci_dev *pdev)
 	}
 
 	/* software reset of the controller, preserving HcFmInterval */
-	fminterval = readl(base + OHCI_FMINTERVAL);
+	if (!no_fminterval)
+		fminterval = readl(base + OHCI_FMINTERVAL);
+
 	writel(OHCI_HCR, base + OHCI_CMDSTATUS);
 
 	/* reset requires max 10 us delay */
@@ -624,7 +634,9 @@ static void quirk_usb_handoff_ohci(struct pci_dev *pdev)
 			break;
 		udelay(1);
 	}
-	writel(fminterval, base + OHCI_FMINTERVAL);
+
+	if (!no_fminterval)
+		writel(fminterval, base + OHCI_FMINTERVAL);
 
 	/* Now the controller is safely in SUSPEND and nothing can wake it up */
 	iounmap(base);
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 142b601f9563..7f76c8a12f89 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -82,6 +82,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
 				"must be suspended extra slowly",
 				pdev->revision);
 		}
+		if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK)
+			xhci->quirks |= XHCI_BROKEN_STREAMS;
 		/* Fresco Logic confirms: all revisions of this chip do not
 		 * support MSI, even though some of them claim to in their PCI
 		 * capabilities.
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 01fcbb5eb06e..c50d8d202618 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -3803,6 +3803,15 @@ static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev,
 		return -EINVAL;
 	}
 
+	if (setup == SETUP_CONTEXT_ONLY) {
+		slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->out_ctx);
+		if (GET_SLOT_STATE(le32_to_cpu(slot_ctx->dev_state)) ==
+		    SLOT_STATE_DEFAULT) {
+			xhci_dbg(xhci, "Slot already in default state\n");
+			return 0;
+		}
+	}
+
 	command = xhci_alloc_command(xhci, false, false, GFP_KERNEL);
 	if (!command)
 		return -ENOMEM;