usb: ohci-hcd: annotate switch/case fallthrough

The USB OCHI code uses an implicit switch/case fallthrough after checking
for valid descriptor IDs.

Add our "fallthrough;" statement-like macro before the default branch in
the OHCI code, to avoid a warning when GCC's -Wimplicit-fallthrough
warning option is enabled.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>

diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index c020d13..234a6f3 100644 (file)
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1361,7 +1361,8 @@ pkt_print(ohci, NULL, dev, pipe, buffer, transfer_len,
                                                wLength));
                                databuf = root_hub_str_index1;
                                OK(len);
-               }
+                       }
+                       fallthrough;
                default:
                        stat = USB_ST_STALLED;
                }