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path: root/drivers/usb/host/xhci-ring.c
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Diffstat (limited to 'drivers/usb/host/xhci-ring.c')
-rw-r--r--drivers/usb/host/xhci-ring.c41
1 files changed, 34 insertions, 7 deletions
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index ee7bc7ecbc59..6ba841bca4a2 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -953,6 +953,17 @@ bandwidth_change:
case TRB_TYPE(TRB_RESET_EP):
handle_reset_ep_completion(xhci, event, xhci->cmd_ring->dequeue);
break;
+ case TRB_TYPE(TRB_RESET_DEV):
+ xhci_dbg(xhci, "Completed reset device command.\n");
+ slot_id = TRB_TO_SLOT_ID(
+ xhci->cmd_ring->dequeue->generic.field[3]);
+ virt_dev = xhci->devs[slot_id];
+ if (virt_dev)
+ handle_cmd_in_cmd_wait_list(xhci, virt_dev, event);
+ else
+ xhci_warn(xhci, "Reset device command completion "
+ "for disabled slot %u\n", slot_id);
+ break;
default:
/* Skip over unknown commands on the event ring */
xhci->error_bitmask |= 1 << 6;
@@ -1080,6 +1091,20 @@ static int xhci_requires_manual_halt_cleanup(struct xhci_hcd *xhci,
return 0;
}
+int xhci_is_vendor_info_code(struct xhci_hcd *xhci, unsigned int trb_comp_code)
+{
+ if (trb_comp_code >= 224 && trb_comp_code <= 255) {
+ /* Vendor defined "informational" completion code,
+ * treat as not-an-error.
+ */
+ xhci_dbg(xhci, "Vendor defined info completion code %u\n",
+ trb_comp_code);
+ xhci_dbg(xhci, "Treating code as success.\n");
+ return 1;
+ }
+ return 0;
+}
+
/*
* If this function returns an error condition, it means it got a Transfer
* event with a corrupted Slot ID, Endpoint ID, or TRB DMA address.
@@ -1196,13 +1221,7 @@ static int handle_tx_event(struct xhci_hcd *xhci,
status = -ENOSR;
break;
default:
- if (trb_comp_code >= 224 && trb_comp_code <= 255) {
- /* Vendor defined "informational" completion code,
- * treat as not-an-error.
- */
- xhci_dbg(xhci, "Vendor defined info completion code %u\n",
- trb_comp_code);
- xhci_dbg(xhci, "Treating code as success.\n");
+ if (xhci_is_vendor_info_code(xhci, trb_comp_code)) {
status = 0;
break;
}
@@ -2181,6 +2200,14 @@ int xhci_queue_address_device(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr,
false);
}
+/* Queue a reset device command TRB */
+int xhci_queue_reset_device(struct xhci_hcd *xhci, u32 slot_id)
+{
+ return queue_command(xhci, 0, 0, 0,
+ TRB_TYPE(TRB_RESET_DEV) | SLOT_ID_FOR_TRB(slot_id),
+ false);
+}
+
/* Queue a configure endpoint command TRB */
int xhci_queue_configure_endpoint(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr,
u32 slot_id, bool command_must_succeed)