From patchwork Sat Mar 5 15:29:19 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nishanth Menon X-Patchwork-Id: 612461 X-Patchwork-Delegate: khilman@deeprootsystems.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p25FW3F3025197 for ; Sat, 5 Mar 2011 15:32:11 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752518Ab1CEPcK (ORCPT ); Sat, 5 Mar 2011 10:32:10 -0500 Received: from na3sys009aog105.obsmtp.com ([74.125.149.75]:42500 "EHLO na3sys009aog105.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751466Ab1CEPcJ (ORCPT ); Sat, 5 Mar 2011 10:32:09 -0500 Received: from source ([74.125.83.44]) (using TLSv1) by na3sys009aob105.postini.com ([74.125.148.12]) with SMTP ID DSNKTXJXeYM7GgjK3wZjLl/BlhekDoyeqfcJ@postini.com; Sat, 05 Mar 2011 07:32:09 PST Received: by gwaa18 with SMTP id a18so1349827gwa.3 for ; Sat, 05 Mar 2011 07:32:08 -0800 (PST) Received: by 10.101.97.12 with SMTP id z12mr377854anl.250.1299339128593; Sat, 05 Mar 2011 07:32:08 -0800 (PST) Received: from localhost (dragon.ti.com [192.94.94.33]) by mx.google.com with ESMTPS id d15sm882273ana.15.2011.03.05.07.32.04 (version=TLSv1/SSLv3 cipher=OTHER); Sat, 05 Mar 2011 07:32:07 -0800 (PST) From: Nishanth Menon To: linux-omap Cc: linux-arm , Kevin Hilman , Tony , Paul , Nishanth Menon Subject: [PATCH V3 16/19] OMAP3+: SR: disable spamming interrupts Date: Sat, 5 Mar 2011 20:59:19 +0530 Message-Id: <1299338962-5602-17-git-send-email-nm@ti.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1299338962-5602-1-git-send-email-nm@ti.com> References: <1299338962-5602-1-git-send-email-nm@ti.com> Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Sat, 05 Mar 2011 15:32:11 +0000 (UTC) diff --git a/arch/arm/mach-omap2/smartreflex.c b/arch/arm/mach-omap2/smartreflex.c index f6e44a1..b1a7cfe 100644 --- a/arch/arm/mach-omap2/smartreflex.c +++ b/arch/arm/mach-omap2/smartreflex.c @@ -209,8 +209,16 @@ static irqreturn_t sr_interrupt(int irq, void *data) value = irqstat_to_notifier_v2(status); } - if (sr_class->notify) - sr_class->notify(sr_info->voltdm, value); + /* Attempt some resemblance of recovery! */ + if (!value) { + dev_err(&sr_info->pdev->dev, "%s: Spurious interrupt!" + "status = 0x%08x. Disabling to prevent spamming!!\n", + __func__, status); + disable_irq_nosync(sr_info->irq); + } else { + if (sr_class->notify) + sr_class->notify(sr_info->voltdm, value); + } return IRQ_HANDLED; }