From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 726B2C46475 for ; Thu, 25 Oct 2018 14:18:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2D12320883 for ; Thu, 25 Oct 2018 14:18:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="SMeocKYb" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2D12320883 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730087AbeJYWvV (ORCPT ); Thu, 25 Oct 2018 18:51:21 -0400 Received: from mail.kernel.org ([198.145.29.99]:33056 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730045AbeJYWvU (ORCPT ); Thu, 25 Oct 2018 18:51:20 -0400 Received: from sasha-vm.mshome.net (unknown [167.98.65.38]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7453D2085A; Thu, 25 Oct 2018 14:18:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1540477103; bh=hf0tFpz6ycOfYkvCWxO7gptv2cGxYCqTGyA7ayyQkEE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SMeocKYbkiIvAYF5X//AFDirhjSjK7NWsbq4B6QPRaS5U1qwm9gvfxOL4H/VcYQZv FzqehYph99tiZPZ82bmZVH9eG90CK6pIhTkXzL+qhX9rxOlhx35qMhdlTcI6nOyduR u+aNaB3MqScYfpJLcmlxCWRtZ/okcuCQVbIx2bAI= From: Sasha Levin To: stable@vger.kernel.org, linux-kernel@vger.kernel.org Cc: "Gustavo A. R. Silva" , Thierry Reding , Sasha Levin Subject: [PATCH AUTOSEL 4.4 49/65] gpu: host1x: fix error return code in host1x_probe() Date: Thu, 25 Oct 2018 10:16:49 -0400 Message-Id: <20181025141705.213937-49-sashal@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181025141705.213937-1-sashal@kernel.org> References: <20181025141705.213937-1-sashal@kernel.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Gustavo A. R. Silva" [ Upstream commit 7b2c63de20080c18d0de35b292ad61fc9bc8328e ] platform_get_irq() returns an error code, but the host1x driver ignores it and always returns -ENXIO. 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. This issue was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva Signed-off-by: Thierry Reding Signed-off-by: Sasha Levin --- drivers/gpu/host1x/dev.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c index 53d3d1d45b48..ce1b10a2ae85 100644 --- a/drivers/gpu/host1x/dev.c +++ b/drivers/gpu/host1x/dev.c @@ -116,8 +116,8 @@ static int host1x_probe(struct platform_device *pdev) syncpt_irq = platform_get_irq(pdev, 0); if (syncpt_irq < 0) { - dev_err(&pdev->dev, "failed to get IRQ\n"); - return -ENXIO; + dev_err(&pdev->dev, "failed to get IRQ: %d\n", syncpt_irq); + return syncpt_irq; } host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL); -- 2.17.1