From patchwork Thu Jan 23 20:39:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Rostedt X-Patchwork-Id: 213592 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4B82AC2D0DB for ; Thu, 23 Jan 2020 20:41:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1C848246B1 for ; Thu, 23 Jan 2020 20:41:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729427AbgAWUlr (ORCPT ); Thu, 23 Jan 2020 15:41:47 -0500 Received: from mail.kernel.org ([198.145.29.99]:45678 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729012AbgAWUjo (ORCPT ); Thu, 23 Jan 2020 15:39:44 -0500 Received: from gandalf.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A42B421D7D; Thu, 23 Jan 2020 20:39:43 +0000 (UTC) Received: from rostedt by gandalf.local.home with local (Exim 4.93) (envelope-from ) id 1iujGQ-000mUV-Io; Thu, 23 Jan 2020 15:39:42 -0500 Message-Id: <20200123203942.460742840@goodmis.org> User-Agent: quilt/0.65 Date: Thu, 23 Jan 2020 15:39:31 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org, linux-rt-users Cc: Thomas Gleixner , Carsten Emde , Sebastian Andrzej Siewior , John Kacur , Julia Cartwright , Daniel Wagner , Tom Zanussi , Benjamin Rouxel , Kukjin Kim , Krzysztof Kozlowski , linux-samsung-soc@vger.kernel.org Subject: [PATCH RT 01/30] i2c: exynos5: Remove IRQF_ONESHOT References: <20200123203930.646725253@goodmis.org> MIME-Version: 1.0 Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org 4.19.94-rt39-rc2 stable review patch. If anyone has any objections, please let me know. ------------------ From: Sebastian Andrzej Siewior [ Upstream commit 4b217df0ab3f7910c96e42091cc7d9f221d05f01 ] The drivers sets IRQF_ONESHOT and passes only a primary handler. The IRQ is masked while the primary is handler is invoked independently of IRQF_ONESHOT. With IRQF_ONESHOT the core code will not force-thread the interrupt and this is probably not intended. I *assume* that the original author copied the IRQ registration from another driver which passed a primary and secondary handler and removed the secondary handler but keeping the ONESHOT flag. Remove IRQF_ONESHOT. Reported-by: Benjamin Rouxel Tested-by: Benjamin Rouxel Cc: Kukjin Kim Cc: Krzysztof Kozlowski Cc: linux-samsung-soc@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Steven Rostedt (VMware) --- drivers/i2c/busses/i2c-exynos5.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/i2c/busses/i2c-exynos5.c b/drivers/i2c/busses/i2c-exynos5.c index c1ce2299a76e..5c57ecf4b79e 100644 --- a/drivers/i2c/busses/i2c-exynos5.c +++ b/drivers/i2c/busses/i2c-exynos5.c @@ -800,9 +800,7 @@ static int exynos5_i2c_probe(struct platform_device *pdev) } ret = devm_request_irq(&pdev->dev, i2c->irq, exynos5_i2c_irq, - IRQF_NO_SUSPEND | IRQF_ONESHOT, - dev_name(&pdev->dev), i2c); - + IRQF_NO_SUSPEND, dev_name(&pdev->dev), i2c); if (ret != 0) { dev_err(&pdev->dev, "cannot request HS-I2C IRQ %d\n", i2c->irq); goto err_clk;