Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757087Ab0ANPJW (ORCPT ); Thu, 14 Jan 2010 10:09:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757106Ab0ANPJS (ORCPT ); Thu, 14 Jan 2010 10:09:18 -0500 Received: from mail.windriver.com ([147.11.1.11]:47617 "EHLO mail.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756625Ab0ANPAx (ORCPT ); Thu, 14 Jan 2010 10:00:53 -0500 From: Jason Wessel To: linux-kernel@vger.kernel.org Cc: kgdb-bugreport@lists.sourceforge.net, mingo@elte.hu, Jason Wessel Subject: [PATCH 13/40] sh,sh-sci: Use NO_POLL_CHAR in the SCIF polled console code Date: Thu, 14 Jan 2010 08:59:09 -0600 Message-Id: <1263481176-1897-14-git-send-email-jason.wessel@windriver.com> X-Mailer: git-send-email 1.6.3.1.9.g95405b In-Reply-To: <1263481176-1897-1-git-send-email-jason.wessel@windriver.com> References: <1263481176-1897-1-git-send-email-jason.wessel@windriver.com> X-OriginalArrivalTime: 14 Jan 2010 15:00:30.0006 (UTC) FILETIME=[50316560:01CA952A] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1111 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. Signed-off-by: Jason Wessel Acked-by: Paul Mundt --- 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 37f0de9..d29b3fe 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); -- 1.6.3.1.9.g95405b -- 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/