From patchwork Fri Aug 21 18:02:36 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 7053131 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: X-Original-To: patchwork-linux-sh@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id D767A9F344 for ; Fri, 21 Aug 2015 18:03:34 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EFE1520380 for ; Fri, 21 Aug 2015 18:03:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A5ABE203AA for ; Fri, 21 Aug 2015 18:03:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752573AbbHUSD0 (ORCPT ); Fri, 21 Aug 2015 14:03:26 -0400 Received: from michel.telenet-ops.be ([195.130.137.88]:35554 "EHLO michel.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751934AbbHUSDX (ORCPT ); Fri, 21 Aug 2015 14:03:23 -0400 Received: from ayla.of.borg ([84.193.93.87]) by michel.telenet-ops.be with bizsmtp id 7W3H1r00V1t5w8s06W3Jtt; Fri, 21 Aug 2015 20:03:22 +0200 Received: from ramsan.of.borg ([192.168.97.29] helo=ramsan) by ayla.of.borg with esmtp (Exim 4.82) (envelope-from ) id 1ZSqer-0007nx-Iz; Fri, 21 Aug 2015 20:03:17 +0200 Received: from geert by ramsan with local (Exim 4.82) (envelope-from ) id 1ZSqet-0001pr-Ci; Fri, 21 Aug 2015 20:03:19 +0200 From: Geert Uytterhoeven To: Greg Kroah-Hartman , Jiri Slaby Cc: Magnus Damm , Yoshihiro Shimoda , Laurent Pinchart , Nobuhiro Iwamatsu , Yoshihiro Kaneko , Kazuya Mizuguchi , Koji Matsuoka , Wolfram Sang , Guennadi Liakhovetski , linux-serial@vger.kernel.org, linux-sh@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH v3 12/33] serial: sh-sci: Return IRQ_HANDLED when overrun if detected Date: Fri, 21 Aug 2015 20:02:36 +0200 Message-Id: <1440180177-6924-13-git-send-email-geert+renesas@glider.be> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1440180177-6924-1-git-send-email-geert+renesas@glider.be> References: <1440180177-6924-1-git-send-email-geert+renesas@glider.be> Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org X-Spam-Status: No, score=-7.7 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Yoshihiro Shimoda This patch fix an issue that the driver may cause "nobody cared" IRQ when this driver detects the overrun flag only. Signed-off-by: Yoshihiro Shimoda Signed-off-by: Geert Uytterhoeven --- v3: - Assimilated into my series. --- drivers/tty/serial/sh-sci.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index 017b33cf5587e809..c4cb7a5a2b110753 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1078,8 +1078,10 @@ static irqreturn_t sci_mpxed_interrupt(int irq, void *ptr) ret = sci_br_interrupt(irq, ptr); /* Overrun Interrupt */ - if (orer_status & s->overrun_mask) + if (orer_status & s->overrun_mask) { sci_handle_fifo_overrun(port); + ret = IRQ_HANDLED; + } return ret; }