Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756722AbZLWVVs (ORCPT ); Wed, 23 Dec 2009 16:21:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756793AbZLWVVo (ORCPT ); Wed, 23 Dec 2009 16:21:44 -0500 Received: from mail.windriver.com ([147.11.1.11]:45294 "EHLO mail.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756779AbZLWVVl (ORCPT ); Wed, 23 Dec 2009 16:21:41 -0500 From: Jason Wessel To: linux-kernel@vger.kernel.org Cc: kgdb-bugreport@lists.sourceforge.net, kdb@oss.sgi.com, mingo@elte.hu, Jason Wessel , Paul Mundt Subject: [PATCH 14/37] sh,sh-sci: Use NO_POLL_CHAR in the SCIF polled console code Date: Wed, 23 Dec 2009 15:19:27 -0600 Message-Id: <1261603190-5036-15-git-send-email-jason.wessel@windriver.com> X-Mailer: git-send-email 1.6.4.rc1 In-Reply-To: <1261603190-5036-14-git-send-email-jason.wessel@windriver.com> References: <1261603190-5036-1-git-send-email-jason.wessel@windriver.com> <1261603190-5036-2-git-send-email-jason.wessel@windriver.com> <1261603190-5036-3-git-send-email-jason.wessel@windriver.com> <1261603190-5036-4-git-send-email-jason.wessel@windriver.com> <1261603190-5036-5-git-send-email-jason.wessel@windriver.com> <1261603190-5036-6-git-send-email-jason.wessel@windriver.com> <1261603190-5036-7-git-send-email-jason.wessel@windriver.com> <1261603190-5036-8-git-send-email-jason.wessel@windriver.com> <1261603190-5036-9-git-send-email-jason.wessel@windriver.com> <1261603190-5036-10-git-send-email-jason.wessel@windriver.com> <1261603190-5036-11-git-send-email-jason.wessel@windriver.com> <1261603190-5036-12-git-send-email-jason.wessel@windriver.com> <1261603190-5036-13-git-send-email-jason.wessel@windriver.com> <1261603190-5036-14-git-send-email-jason.wessel@windriver.com> X-OriginalArrivalTime: 23 Dec 2009 21:20:13.0895 (UTC) FILETIME=[B75C7570:01CA8415] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1097 Lines: 38 The sci_poll_get_char() needs to return immediately if there is no input from the chip to process, and must return a value of NO_POLL_CHAR. This allows kgdboc to process multiple polled devices while kgdb is active. CC: Paul Mundt Signed-off-by: Jason Wessel --- drivers/serial/sh-sci.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-) diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c index 68c7f6c..ab020eb 100644 --- a/drivers/serial/sh-sci.c +++ b/drivers/serial/sh-sci.c @@ -126,7 +126,11 @@ static int sci_poll_get_char(struct uart_port *port) handle_error(port); continue; } - } while (!(status & SCxSR_RDxF(port))); + break; + } while (1); + + if (!(status & SCxSR_RDxF(port))) + return NO_POLL_CHAR; c = sci_in(port, SCxRDR); -- 1.6.4.rc1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/