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path: root/drivers/usb/host
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Diffstat (limited to 'drivers/usb/host')
-rw-r--r--drivers/usb/host/ehci-orion.c3
-rw-r--r--drivers/usb/host/xhci-pci.c1
-rw-r--r--drivers/usb/host/xhci-ring.c20
-rw-r--r--drivers/usb/host/xhci.c10
4 files changed, 28 insertions, 6 deletions
diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c
index bfcbb9aa8816..ee8d5faa0194 100644
--- a/drivers/usb/host/ehci-orion.c
+++ b/drivers/usb/host/ehci-orion.c
@@ -224,7 +224,8 @@ static int ehci_orion_drv_probe(struct platform_device *pdev)
priv->phy = devm_phy_optional_get(&pdev->dev, "usb");
if (IS_ERR(priv->phy)) {
err = PTR_ERR(priv->phy);
- goto err_phy_get;
+ if (err != -ENOSYS)
+ goto err_phy_get;
} else {
err = phy_init(priv->phy);
if (err)
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 2af32e26fafc..7e5c90eebb9c 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -135,6 +135,7 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI) {
xhci->quirks |= XHCI_SPURIOUS_REBOOT;
+ xhci->quirks |= XHCI_SPURIOUS_WAKEUP;
}
if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
(pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI ||
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index ad975a2975ca..41d7a05f8af4 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -2239,6 +2239,7 @@ static int handle_tx_event(struct xhci_hcd *xhci,
u32 trb_comp_code;
int ret = 0;
int td_num = 0;
+ bool handling_skipped_tds = false;
slot_id = TRB_TO_SLOT_ID(le32_to_cpu(event->flags));
xdev = xhci->devs[slot_id];
@@ -2372,6 +2373,10 @@ static int handle_tx_event(struct xhci_hcd *xhci,
ep->skip = true;
xhci_dbg(xhci, "Miss service interval error, set skip flag\n");
goto cleanup;
+ case COMP_PING_ERR:
+ ep->skip = true;
+ xhci_dbg(xhci, "No Ping response error, Skip one Isoc TD\n");
+ goto cleanup;
default:
if (xhci_is_vendor_info_code(xhci, trb_comp_code)) {
status = 0;
@@ -2508,13 +2513,18 @@ static int handle_tx_event(struct xhci_hcd *xhci,
ep, &status);
cleanup:
+
+
+ handling_skipped_tds = ep->skip &&
+ trb_comp_code != COMP_MISSED_INT &&
+ trb_comp_code != COMP_PING_ERR;
+
/*
- * Do not update event ring dequeue pointer if ep->skip is set.
- * Will roll back to continue process missed tds.
+ * Do not update event ring dequeue pointer if we're in a loop
+ * processing missed tds.
*/
- if (trb_comp_code == COMP_MISSED_INT || !ep->skip) {
+ if (!handling_skipped_tds)
inc_deq(xhci, xhci->event_ring);
- }
if (ret) {
urb = td->urb;
@@ -2549,7 +2559,7 @@ cleanup:
* Process them as short transfer until reach the td pointed by
* the event.
*/
- } while (ep->skip && trb_comp_code != COMP_MISSED_INT);
+ } while (handling_skipped_tds);
return 0;
}
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 26f62b2b33f8..1e6d7579709e 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -175,6 +175,16 @@ int xhci_reset(struct xhci_hcd *xhci)
command |= CMD_RESET;
writel(command, &xhci->op_regs->command);
+ /* Existing Intel xHCI controllers require a delay of 1 mS,
+ * after setting the CMD_RESET bit, and before accessing any
+ * HC registers. This allows the HC to complete the
+ * reset operation and be ready for HC register access.
+ * Without this delay, the subsequent HC register access,
+ * may result in a system hang very rarely.
+ */
+ if (xhci->quirks & XHCI_INTEL_HOST)
+ udelay(1000);
+
ret = xhci_handshake(&xhci->op_regs->command,
CMD_RESET, 0, 10 * 1000 * 1000);
if (ret)