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-rw-r--r--drivers/usb/host/xhci.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index f647d918a886..fcc5821a27f3 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -1888,6 +1888,12 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
1888 ctrl_ctx->add_flags |= cpu_to_le32(SLOT_FLAG); 1888 ctrl_ctx->add_flags |= cpu_to_le32(SLOT_FLAG);
1889 ctrl_ctx->add_flags &= cpu_to_le32(~EP0_FLAG); 1889 ctrl_ctx->add_flags &= cpu_to_le32(~EP0_FLAG);
1890 ctrl_ctx->drop_flags &= cpu_to_le32(~(SLOT_FLAG | EP0_FLAG)); 1890 ctrl_ctx->drop_flags &= cpu_to_le32(~(SLOT_FLAG | EP0_FLAG));
1891
1892 /* Don't issue the command if there's no endpoints to update. */
1893 if (ctrl_ctx->add_flags == cpu_to_le32(SLOT_FLAG) &&
1894 ctrl_ctx->drop_flags == 0)
1895 return 0;
1896
1891 xhci_dbg(xhci, "New Input Control Context:\n"); 1897 xhci_dbg(xhci, "New Input Control Context:\n");
1892 slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->in_ctx); 1898 slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->in_ctx);
1893 xhci_dbg_ctx(xhci, virt_dev->in_ctx, 1899 xhci_dbg_ctx(xhci, virt_dev->in_ctx,