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,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 8EEE8C10F29 for ; Mon, 16 Mar 2020 02:36:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5D38F206E9 for ; Mon, 16 Mar 2020 02:36:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1584326201; bh=6Pe8o5i5K3qDvVX/UzNEoLD4bmR+7YYriviwdr0EBk8=; h=From:To:Cc:Subject:Date:List-ID:From; b=lJ+WmJyynDRSSRgFIxwgKRJqj/HqyH79zenby4eMzVP67A4hceRi/pmoKeDHfJ1RT JJ6VVqi3y0MP20KutlMiYQbgiaa9bz9s1Ix026lzSJUKpasSy9IFDTuvh5FsyyS0MK HbKQ0Em5BQKDd53eCVppfrPGHZLs4lfBoBjTJ9B8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730227AbgCPCfl (ORCPT ); Sun, 15 Mar 2020 22:35:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:40316 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730224AbgCPCfk (ORCPT ); Sun, 15 Mar 2020 22:35:40 -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 54076206BE; Mon, 16 Mar 2020 02:35:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1584326140; bh=6Pe8o5i5K3qDvVX/UzNEoLD4bmR+7YYriviwdr0EBk8=; h=From:To:Cc:Subject:Date:From; b=uSizxwEdL8NkUeyqTOGZ3TV8iFEna6+OifOwsQ2BN2O+lmu1Wdjl/NFInBeB1LQGg QiMnqx+fc69thie2mPpBpTsQGOPhkbuBAiG7if0VWFssLyTkxPrFwPtAGYSvWHyev6 7mavtjEKg/zvQnH/WcBc/6XJ1uu0tz46KqRUAVcQ= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yuji Sasaki , Vinod Koul , Mark Brown , Sasha Levin , linux-arm-msm@vger.kernel.org, linux-spi@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 1/7] spi: qup: call spi_qup_pm_resume_runtime before suspending Date: Sun, 15 Mar 2020 22:35:32 -0400 Message-Id: <20200316023538.2232-1-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: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Yuji Sasaki [ Upstream commit 136b5cd2e2f97581ae560cff0db2a3b5369112da ] spi_qup_suspend() will cause synchronous external abort when runtime suspend is enabled and applied, as it tries to access SPI controller register while clock is already disabled in spi_qup_pm_suspend_runtime(). Signed-off-by: Yuji sasaki Signed-off-by: Vinod Koul Link: https://lore.kernel.org/r/20200214074340.2286170-1-vkoul@kernel.org Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- drivers/spi/spi-qup.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c index 1bfa889b8427a..88b108e1c85fe 100644 --- a/drivers/spi/spi-qup.c +++ b/drivers/spi/spi-qup.c @@ -974,6 +974,11 @@ static int spi_qup_suspend(struct device *device) struct spi_qup *controller = spi_master_get_devdata(master); int ret; + if (pm_runtime_suspended(device)) { + ret = spi_qup_pm_resume_runtime(device); + if (ret) + return ret; + } ret = spi_master_suspend(master); if (ret) return ret; @@ -982,10 +987,8 @@ static int spi_qup_suspend(struct device *device) if (ret) return ret; - if (!pm_runtime_suspended(device)) { - clk_disable_unprepare(controller->cclk); - clk_disable_unprepare(controller->iclk); - } + clk_disable_unprepare(controller->cclk); + clk_disable_unprepare(controller->iclk); return 0; } -- 2.20.1