From: Mathias Nyman > Sent: 23 January 2017 12:20 > If we just provide a helper to convert completion code to string, we can > combine all debugging messages into a single print. ... > diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h > index aa63e38..ebdd920 100644 > --- a/drivers/usb/host/xhci.h > +++ b/drivers/usb/host/xhci.h > @@ -1097,6 +1097,86 @@ struct xhci_transfer_event { > #define COMP_SECONDARY_BANDWIDTH_ERROR 35 > #define COMP_SPLIT_TRANSACTION_ERROR 36 > > +static inline const char *xhci_trb_comp_code_string(u8 status) > +{ > + switch (status) { > + case COMP_INVALID: > + return "Invalid"; ... > + case COMP_SPLIT_TRANSACTION_ERROR: > + return "Split Transaction Error"; > + default: > + return "Unknown!!"; > + } > +} That ought to be a real function, not a static inline. Will generate a lot of code and data if inlined. If the error codes are reasonable dense then an array is much better than the switch statement. David -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html