[src/trunk]: src/sys/dev/ic Broadcom AUX UART doesn't seem to set LSR RXRDY b...

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/8c0a7fa091c1
branches:  trunk
changeset: 355511:8c0a7fa091c1
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Mon Jul 31 23:53:25 2017 +0000

description:
Broadcom AUX UART doesn't seem to set LSR RXRDY bit when data is available
in the RX FIFO.

diffstat:

 sys/dev/ic/com.c |  7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diffs (28 lines):

diff -r 31d1be1fcf60 -r 8c0a7fa091c1 sys/dev/ic/com.c
--- a/sys/dev/ic/com.c  Mon Jul 31 19:29:19 2017 +0000
+++ b/sys/dev/ic/com.c  Mon Jul 31 23:53:25 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: com.c,v 1.340 2017/07/31 09:25:14 jmcneill Exp $ */
+/* $NetBSD: com.c,v 1.341 2017/07/31 23:53:25 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 1998, 1999, 2004, 2008 The NetBSD Foundation, Inc.
@@ -66,7 +66,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: com.c,v 1.340 2017/07/31 09:25:14 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: com.c,v 1.341 2017/07/31 23:53:25 jmcneill Exp $");
 
 #include "opt_com.h"
 #include "opt_ddb.h"
@@ -2116,6 +2116,9 @@
 #endif
                }
 
+               if (sc->sc_type == COM_TYPE_BCMAUXUART && ISSET(iir, IIR_RXRDY))
+                       lsr |= LSR_RXRDY;
+
                if (ISSET(lsr, LSR_RCV_MASK) &&
                    !ISSET(sc->sc_rx_flags, RX_IBUF_OVERFLOWED)) {
                        while (cc > 0) {