From patchwork Mon Jul 3 12:47:38 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gustavo A. R. Silva" X-Patchwork-Id: 9822683 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id DAD21602F0 for ; Mon, 3 Jul 2017 13:10:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C2F672817F for ; Mon, 3 Jul 2017 13:10:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B6C602823E; Mon, 3 Jul 2017 13:10:03 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 06AC12817F for ; Mon, 3 Jul 2017 13:10:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754417AbdGCNKA (ORCPT ); Mon, 3 Jul 2017 09:10:00 -0400 Received: from gateway22.websitewelcome.com ([192.185.46.131]:40124 "EHLO gateway22.websitewelcome.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754381AbdGCNJ7 (ORCPT ); Mon, 3 Jul 2017 09:09:59 -0400 X-Greylist: delayed 1335 seconds by postgrey-1.27 at vger.kernel.org; Mon, 03 Jul 2017 09:09:59 EDT Received: from cm14.websitewelcome.com (cm14.websitewelcome.com [100.42.49.7]) by gateway22.websitewelcome.com (Postfix) with ESMTP id ECA5228282 for ; Mon, 3 Jul 2017 07:47:41 -0500 (CDT) Received: from gator4166.hostgator.com ([108.167.133.22]) by cmsmtp with SMTP id S0l6dICrFUy7vS0l7dM315; Mon, 03 Jul 2017 07:47:21 -0500 Received: from [189.152.164.199] (port=44964 helo=embeddedgus) by gator4166.hostgator.com with esmtpa (Exim 4.87) (envelope-from ) id 1dS0lQ-001FP2-NM; Mon, 03 Jul 2017 07:47:40 -0500 Date: Mon, 3 Jul 2017 07:47:38 -0500 From: "Gustavo A. R. Silva" To: Jonathan Hunter , MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Thierry Reding Cc: linux-pm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" Subject: [PATCH v2] devfreq: tegra: fix error return code in tegra_devfreq_probe() Message-ID: <20170703124738.GA3947@embeddedgus> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator4166.hostgator.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 189.152.164.199 X-Exim-ID: 1dS0lQ-001FP2-NM X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: (embeddedgus) [189.152.164.199]:44964 X-Source-Auth: garsilva@embeddedor.com X-Email-Count: 6 X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP platform_get_irq() returns an error code, but the tegra-devfreq driver ignores it and always returns -ENODEV. This is not correct, and prevents -EPROBE_DEFER from being propagated properly. Notice that platform_get_irq() no longer returns 0 on error: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e330b9a6bb35dc7097a4f02cb1ae7b6f96df92af Print and propagate the return value of platform_get_irq on failure. Reviewed-by: Chanwoo Choi Acked-by: MyungJoo Ham Signed-off-by: Gustavo A. R. Silva Acked-by: Jon Hunter --- Changes in v2: Rewrite commit message. drivers/devfreq/tegra-devfreq.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/devfreq/tegra-devfreq.c b/drivers/devfreq/tegra-devfreq.c index 214fff9..ae71215 100644 --- a/drivers/devfreq/tegra-devfreq.c +++ b/drivers/devfreq/tegra-devfreq.c @@ -688,9 +688,9 @@ static int tegra_devfreq_probe(struct platform_device *pdev) } irq = platform_get_irq(pdev, 0); - if (irq <= 0) { - dev_err(&pdev->dev, "Failed to get IRQ\n"); - return -ENODEV; + if (irq < 0) { + dev_err(&pdev->dev, "Failed to get IRQ: %d\n", irq); + return irq; } platform_set_drvdata(pdev, tegra);