1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/usb/host/xhci-hcd.c b/drivers/usb/host/xhci-hcd.c
index c6b921994b28..59ee61d2a198 100644
--- a/drivers/usb/host/xhci-hcd.c
+++ b/drivers/usb/host/xhci-hcd.c
@@ -1243,6 +1243,25 @@ static int __init xhci_hcd_init(void)
                 return retval;
         }
 #endif
+        /*
+         * Check the compiler generated sizes of structures that must be laid
+         * out in specific ways for hardware access.
+         */
+        BUILD_BUG_ON(sizeof(struct xhci_doorbell_array) != 256*32/8);
+        BUILD_BUG_ON(sizeof(struct xhci_slot_ctx) != 8*32/8);
+        BUILD_BUG_ON(sizeof(struct xhci_ep_ctx) != 8*32/8);
+        /* xhci_device_control has eight fields, and also
+         * embeds one xhci_slot_ctx and 31 xhci_ep_ctx
+         */
+        BUILD_BUG_ON(sizeof(struct xhci_device_control) != (8+8+8*31)*32/8);
+        BUILD_BUG_ON(sizeof(struct xhci_stream_ctx) != 4*32/8);
+        BUILD_BUG_ON(sizeof(union xhci_trb) != 4*32/8);
+        BUILD_BUG_ON(sizeof(struct xhci_erst_entry) != 4*32/8);
+        BUILD_BUG_ON(sizeof(struct xhci_cap_regs) != 7*32/8);
+        BUILD_BUG_ON(sizeof(struct xhci_intr_reg) != 8*32/8);
+        /* xhci_run_regs has eight fields and embeds 128 xhci_intr_regs */
+        BUILD_BUG_ON(sizeof(struct xhci_run_regs) != (8+8*128)*32/8);
+        BUILD_BUG_ON(sizeof(struct xhci_doorbell_array) != 256*32/8);
         return 0;
 }
 module_init(xhci_hcd_init);