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Diffstat (limited to 'sys/dev/usb/usb_transfer.c')
-rw-r--r--sys/dev/usb/usb_transfer.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/dev/usb/usb_transfer.c b/sys/dev/usb/usb_transfer.c
index 67745cf49397..d41121ed3a06 100644
--- a/sys/dev/usb/usb_transfer.c
+++ b/sys/dev/usb/usb_transfer.c
@@ -1889,8 +1889,10 @@ usbd_transfer_submit(struct usb_xfer *xfer)
*/
#if USB_HAVE_BUSDMA
if (xfer->flags_int.bdma_enable) {
+ USB_BUS_LOCK(bus);
/* insert the USB transfer last in the BUS-DMA queue */
usb_command_wrapper(&xfer->xroot->dma_q, xfer);
+ USB_BUS_UNLOCK(bus);
return;
}
#endif