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=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, 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 38E79CA9EA9 for ; Fri, 18 Oct 2019 22:03:39 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 08C2D20679 for ; Fri, 18 Oct 2019 22:03:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="CgeT5s7S"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="osYUVrOR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 08C2D20679 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-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=rFmedyV7+7n8ZPnkV+nWhc3Jr+dLncOjklFsWf4/3Yk=; b=CgeT5s7SYLTdBr P5o5l4pBStidoPihN13pSmQujigrrSmITnA4xlgZGB46tcjidn9WiKV13vl/8opgGLt7Vv5anEjEV JmeYDUgvsna33vyCvKEYrwCqaVr7KjpnIF6TSSHBZTNOxzfLG45aqNFqdo3MWq59+yPhftxKcIbwq up0CUYKe662RLG52qbizhr/hmH3iPoJDL0Sa5jwevRbskOjPgqkYJsE0OT3BROyLX7XG7NBaW8Yy8 FxaY+GJ6Z3XCQjNTcBroWrI+7yPi5T6lPsadA/SmWgfi0eF84umBpaQPVD0PBMJ8xRXYGWt4LQ95w HkgACdSinwM83BowIQug==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iLaLL-00016R-KQ; Fri, 18 Oct 2019 22:03:31 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iLaLI-00014v-PT for linux-amlogic@lists.infradead.org; Fri, 18 Oct 2019 22:03:30 +0000 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (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 8278C20679; Fri, 18 Oct 2019 22:03:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1571436206; bh=gQfdSseJIHTjOoyUiK2pAFA1G+4rHT3VQvtfGLrK9No=; h=From:To:Cc:Subject:Date:From; b=osYUVrORP+k5gDMxBmlK1vvXSVvjXxUAK1m0Y9NxhnPUvTH4ci8xX4pVO4lM6nPx3 UBHPxnPmcVegVJ0glBC3W7CZ5rqGP4PUD79i9hZl5+KJ8s5MEC6WrHhR2ac8K00thB PzG2fe0nuibXssy0CxOrzKKcJjzedTyCr/vqEu+c= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 5.3 01/89] iio: adc: meson_saradc: Fix memory allocation order Date: Fri, 18 Oct 2019 18:01:56 -0400 Message-Id: <20191018220324.8165-1-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191018_150328_845078_5EADA735 X-CRM114-Status: GOOD ( 11.27 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sasha Levin , Elie Roudninski , Kevin Hilman , linux-iio@vger.kernel.org, Martin Blumenstingl , Remi Pommarel , Jonathan Cameron , linux-amlogic@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org From: Remi Pommarel [ Upstream commit de10ac47597e7a3596b27631d0d5ce5f48d2c099 ] meson_saradc's irq handler uses priv->regmap so make sure that it is allocated before the irq get enabled. This also fixes crash when CONFIG_DEBUG_SHIRQ is enabled, as device managed resources are freed in the inverted order they had been allocated, priv->regmap was freed before the spurious fake irq that CONFIG_DEBUG_SHIRQ adds called the handler. Fixes: 3af109131b7eb8 ("iio: adc: meson-saradc: switch from polling to interrupt mode") Reported-by: Elie Roudninski Signed-off-by: Remi Pommarel Reviewed-by: Martin Blumenstingl Tested-by: Elie ROUDNINSKI Reviewed-by: Kevin Hilman Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin --- drivers/iio/adc/meson_saradc.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c index 7b28d045d2719..7b27306330a35 100644 --- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -1219,6 +1219,11 @@ static int meson_sar_adc_probe(struct platform_device *pdev) if (IS_ERR(base)) return PTR_ERR(base); + priv->regmap = devm_regmap_init_mmio(&pdev->dev, base, + priv->param->regmap_config); + if (IS_ERR(priv->regmap)) + return PTR_ERR(priv->regmap); + irq = irq_of_parse_and_map(pdev->dev.of_node, 0); if (!irq) return -EINVAL; @@ -1228,11 +1233,6 @@ static int meson_sar_adc_probe(struct platform_device *pdev) if (ret) return ret; - priv->regmap = devm_regmap_init_mmio(&pdev->dev, base, - priv->param->regmap_config); - if (IS_ERR(priv->regmap)) - return PTR_ERR(priv->regmap); - priv->clkin = devm_clk_get(&pdev->dev, "clkin"); if (IS_ERR(priv->clkin)) { dev_err(&pdev->dev, "failed to get clkin\n"); -- 2.20.1 _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic 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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 256BACA9EA9 for ; Fri, 18 Oct 2019 22:03:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ED86B222C2 for ; Fri, 18 Oct 2019 22:03:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1571436208; bh=gQfdSseJIHTjOoyUiK2pAFA1G+4rHT3VQvtfGLrK9No=; h=From:To:Cc:Subject:Date:List-ID:From; b=B1wkIxJJyN187JgbDZFWEi8eQPOEc5gjxlf9kp18kDsrSsQOo9A89V0rwznXi+eFP rAV2Wt7ib5seJfvuAuxWiRrkIBS5cd8AIHKz5NTRUovgC1V6wv+uokD94Yk/mH6cqY BWCnftOS4qkxbLW858QHdykoA0uNUrBc2fqpnSwM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726641AbfJRWD1 (ORCPT ); Fri, 18 Oct 2019 18:03:27 -0400 Received: from mail.kernel.org ([198.145.29.99]:34764 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726604AbfJRWD1 (ORCPT ); Fri, 18 Oct 2019 18:03:27 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (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 8278C20679; Fri, 18 Oct 2019 22:03:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1571436206; bh=gQfdSseJIHTjOoyUiK2pAFA1G+4rHT3VQvtfGLrK9No=; h=From:To:Cc:Subject:Date:From; b=osYUVrORP+k5gDMxBmlK1vvXSVvjXxUAK1m0Y9NxhnPUvTH4ci8xX4pVO4lM6nPx3 UBHPxnPmcVegVJ0glBC3W7CZ5rqGP4PUD79i9hZl5+KJ8s5MEC6WrHhR2ac8K00thB PzG2fe0nuibXssy0CxOrzKKcJjzedTyCr/vqEu+c= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Remi Pommarel , Elie Roudninski , Martin Blumenstingl , Kevin Hilman , Jonathan Cameron , Sasha Levin , linux-iio@vger.kernel.org, linux-amlogic@lists.infradead.org Subject: [PATCH AUTOSEL 5.3 01/89] iio: adc: meson_saradc: Fix memory allocation order Date: Fri, 18 Oct 2019 18:01:56 -0400 Message-Id: <20191018220324.8165-1-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org From: Remi Pommarel [ Upstream commit de10ac47597e7a3596b27631d0d5ce5f48d2c099 ] meson_saradc's irq handler uses priv->regmap so make sure that it is allocated before the irq get enabled. This also fixes crash when CONFIG_DEBUG_SHIRQ is enabled, as device managed resources are freed in the inverted order they had been allocated, priv->regmap was freed before the spurious fake irq that CONFIG_DEBUG_SHIRQ adds called the handler. Fixes: 3af109131b7eb8 ("iio: adc: meson-saradc: switch from polling to interrupt mode") Reported-by: Elie Roudninski Signed-off-by: Remi Pommarel Reviewed-by: Martin Blumenstingl Tested-by: Elie ROUDNINSKI Reviewed-by: Kevin Hilman Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin --- drivers/iio/adc/meson_saradc.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c index 7b28d045d2719..7b27306330a35 100644 --- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -1219,6 +1219,11 @@ static int meson_sar_adc_probe(struct platform_device *pdev) if (IS_ERR(base)) return PTR_ERR(base); + priv->regmap = devm_regmap_init_mmio(&pdev->dev, base, + priv->param->regmap_config); + if (IS_ERR(priv->regmap)) + return PTR_ERR(priv->regmap); + irq = irq_of_parse_and_map(pdev->dev.of_node, 0); if (!irq) return -EINVAL; @@ -1228,11 +1233,6 @@ static int meson_sar_adc_probe(struct platform_device *pdev) if (ret) return ret; - priv->regmap = devm_regmap_init_mmio(&pdev->dev, base, - priv->param->regmap_config); - if (IS_ERR(priv->regmap)) - return PTR_ERR(priv->regmap); - priv->clkin = devm_clk_get(&pdev->dev, "clkin"); if (IS_ERR(priv->clkin)) { dev_err(&pdev->dev, "failed to get clkin\n"); -- 2.20.1