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 24892C433E0 for ; Thu, 18 Jun 2020 01:30:39 +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 EE23122243 for ; Thu, 18 Jun 2020 01:30:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="qVrqy9cu"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="cQ7Fm1k+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EE23122243 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-arm-kernel-bounces+infradead-linux-arm-kernel=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:References:In-Reply-To: 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: List-Owner; bh=74+zw9bfM1oCCK2J5J3mOqRsoqR68DufLiDgy2+KBQk=; b=qVrqy9cuD8QJU7 QVmgiJGYbQFbUYIOO6kLxyY/9sP7g8W6y9jC/WnaDasqVgj7FD+RmCFPxGM0xQZHWcsu+ucxDBZf6 GXBMYQQx26oMZatU6nCa7EzLMCsJ8CyP1WDX/PXm9xyZP1QZTF3FWQFIWQqrGFpaBSiFPQrXz/36S rkXQLEpMjUmlJk+N9dRqGf7SBVHAKGUKgFHfHHs2JcdjfjqwQBLl4sSriFTpCRcfArOUVkLLls+Ht +ybDEzP/Q86Zv6osj6YYjfB73IrVV7NgRwPhjEXjJhRF5Xx66qnBuG40ukcI4+OCSIMVHRgKId4Ic z57J+dIzgLK1RNPqXGAA==; 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 1jljNs-0000WQ-SV; Thu, 18 Jun 2020 01:30:28 +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 1jlj7y-0003KJ-Uo for linux-arm-kernel@lists.infradead.org; Thu, 18 Jun 2020 01:14:04 +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 9459C21D7B; Thu, 18 Jun 2020 01:14:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592442842; bh=Jiv2L8x1UrhUVZJ3+GJukZ7OLVFFYw+CmLuVM0LVPtU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cQ7Fm1k+AKPzjqzKsfXRA7cfcueEbtCEuK59uPtZ+4l/30P8eveuEXf+IDSqKoKPM x2QxmAGh1Q/MI95W/El+oEvZF4U17/A9AOyfO1vX96v/W2Ppo0+NOK5rBybYzq0uVr PEa6sXK8pFEq549B50Yyq9ru9Y0WN/3IoHyA1rUA= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 5.7 275/388] mfd: stmfx: Disable IRQ in suspend to avoid spurious interrupt Date: Wed, 17 Jun 2020 21:06:12 -0400 Message-Id: <20200618010805.600873-275-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200618010805.600873-1-sashal@kernel.org> References: <20200618010805.600873-1-sashal@kernel.org> 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-20200617_181403_119749_381A0180 X-CRM114-Status: GOOD ( 11.60 ) X-BeenThere: linux-arm-kernel@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 , Amelie Delaunay , Lee Jones , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Amelie Delaunay [ Upstream commit 97eda5dcc2cde5dcc778bef7a9344db3b6bf8ef5 ] When STMFX supply is stopped, spurious interrupt can occur. To avoid that, disable the interrupt in suspend before disabling the regulator and re-enable it at the end of resume. Fixes: 06252ade9156 ("mfd: Add ST Multi-Function eXpander (STMFX) core driver") Signed-off-by: Amelie Delaunay Signed-off-by: Lee Jones Signed-off-by: Sasha Levin --- drivers/mfd/stmfx.c | 6 ++++++ include/linux/mfd/stmfx.h | 1 + 2 files changed, 7 insertions(+) diff --git a/drivers/mfd/stmfx.c b/drivers/mfd/stmfx.c index 1977fe95f876..711979afd90a 100644 --- a/drivers/mfd/stmfx.c +++ b/drivers/mfd/stmfx.c @@ -296,6 +296,8 @@ static int stmfx_irq_init(struct i2c_client *client) if (ret) goto irq_exit; + stmfx->irq = client->irq; + return 0; irq_exit: @@ -486,6 +488,8 @@ static int stmfx_suspend(struct device *dev) if (ret) return ret; + disable_irq(stmfx->irq); + if (stmfx->vdd) return regulator_disable(stmfx->vdd); @@ -529,6 +533,8 @@ static int stmfx_resume(struct device *dev) if (ret) return ret; + enable_irq(stmfx->irq); + return 0; } #endif diff --git a/include/linux/mfd/stmfx.h b/include/linux/mfd/stmfx.h index 3c67983678ec..744dce63946e 100644 --- a/include/linux/mfd/stmfx.h +++ b/include/linux/mfd/stmfx.h @@ -109,6 +109,7 @@ struct stmfx { struct device *dev; struct regmap *map; struct regulator *vdd; + int irq; struct irq_domain *irq_domain; struct mutex lock; /* IRQ bus lock */ u8 irq_src; -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel