From patchwork Mon Nov 11 17:48:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam via B4 Relay X-Patchwork-Id: 842629 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CD78D1A9B37; Mon, 11 Nov 2024 17:48:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731347318; cv=none; b=f2e5eSHKQIX78+mWn608UJs156vQKp75EU1MMqGxnFSjCMk/7OamtqJC/x1O64ohp663QqyO6go3IjxMLknrwBshtezdHWODQ9tjYD0xgaQd+x6NPUFOdw1HSWWOCes6ohffwT3m/PUB1tF6VYP0h0s5KHQrvIE0v7WcEVUIVJA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731347318; c=relaxed/simple; bh=oDE7Z60Sda7MtMa9I9XNVVTr3fEGh1yrGGrVYaCcTKc=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=kOmVPAFFbY/K9gPzjv005UEZZWdhMr5AX0Zj/iWzENLSS08cqAuWav/8fdMZeNv66K+XmUheYMdRwoaOdy5n0HPer+jDNMP5pBOkHsiGZxk1c5vKVWkyZtx5LDl/oulKeqz8M5D0I67KFuq7G5ULc032X3sOsmzlnZRhpSuZhPk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RhG6k+Ow; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="RhG6k+Ow" Received: by smtp.kernel.org (Postfix) with ESMTPS id 643CFC4CEDB; Mon, 11 Nov 2024 17:48:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1731347318; bh=oDE7Z60Sda7MtMa9I9XNVVTr3fEGh1yrGGrVYaCcTKc=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=RhG6k+OwUJC1t04TSz4zO7clZcsLk+DpR5jn7nvioxg06YPsK4iWc7sahrq8Nojv7 9ntUEWatyace+HXfuyaax4YvyNZ7h26d07FlcWa+DuJBYdBMV5fOjmcMFzUIcfFkN4 u25OJptbScTaVk0T7nIhXlm30rgVGG0UA1Oud0msyhRqH5oGHO3HsRJROFL/QCMFMo TJfRzl5Q8PtablDqvQiRMYA+L2C76O3PejEgJ1wn/1E/5ReqM23pkiLSolPd/IVopK nUcSl2xQMwNDRmcuIwOKAln0H2gkXy5k2Oa090ie7n7n1n0v5Fkv/CYL3IkMujzT2E cv1i0UIsWz9og== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 56F31D3ABD8; Mon, 11 Nov 2024 17:48:38 +0000 (UTC) From: Manivannan Sadhasivam via B4 Relay Date: Mon, 11 Nov 2024 23:18:33 +0530 Subject: [PATCH 4/5] scsi: ufs: pltfrm: Drop PM runtime reference count after ufshcd_remove() Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241111-ufs_bug_fix-v1-4-45ad8b62f02e@linaro.org> References: <20241111-ufs_bug_fix-v1-0-45ad8b62f02e@linaro.org> In-Reply-To: <20241111-ufs_bug_fix-v1-0-45ad8b62f02e@linaro.org> To: Alim Akhtar , Avri Altman , Bart Van Assche , "James E.J. Bottomley" , "Martin K. Petersen" , Mike Bi , Bean Huo , =?utf-8?q?Thom?= =?utf-8?q?as_Wei=C3=9Fschuh?= , Luca Porzio , Asutosh Das , Can Guo , Pedro Sousa , Krzysztof Kozlowski , Peter Wang , Stanley Jhu , Yoshihiro Shimoda , Orson Zhai , Baolin Wang , Chunyan Zhang , Matthias Brugger , AngeloGioacchino Del Regno , Santosh Y , Namjae Jeon Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-renesas-soc@vger.kernel.org, Manivannan Sadhasivam , stable@vger.kernel.org X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=3829; i=manivannan.sadhasivam@linaro.org; h=from:subject:message-id; bh=A6udAVAOGCzcxAfO6FoxgGhhFbo2oCHyG4WxttE28E8=; b=owEBbQGS/pANAwAKAVWfEeb+kc71AcsmYgBnMkNzOShxk1jlTg40JZj4jvQfsj5GfK53lnNIi ZOY7wXm8qWJATMEAAEKAB0WIQRnpUMqgUjL2KRYJ5dVnxHm/pHO9QUCZzJDcwAKCRBVnxHm/pHO 9T/OB/4sbcr9eWAA6RiaVVP/+LULxj5QJg3KHy4v2BNhRXeZOONM48cElO2R0XYZjzS27ZonXgh kgHDoLaBxehlHMSnxjlYr62Qlmu2LuKcjRD+O23Eo6yxjhvXyggQK6ed9XJkMPNabDFJwbQ69Kq OW+2NT539Mc6iR4H8uKZx1oTvEdgHjMxeDwWLOl17vpqLu1Ox88OILTTHeEl4KGqDLnUmddrV79 Zzya0F92nny+pVesqZD3ro8KyzXMco+GIc+k2YTwQmPgn9CvLInsQzVKjGW94stZ8bRWcOYUmUu uZUBJLAza5JxTRgweA1wVS23jdCS6EdWIApaMfCASCOl+LTJ X-Developer-Key: i=manivannan.sadhasivam@linaro.org; a=openpgp; fpr=C668AEC3C3188E4C611465E7488550E901166008 X-Endpoint-Received: by B4 Relay for manivannan.sadhasivam@linaro.org/default with auth_id=185 X-Original-From: Manivannan Sadhasivam Reply-To: manivannan.sadhasivam@linaro.org From: Manivannan Sadhasivam During the remove stage of glue drivers, some of them are incrementing the reference count using pm_runtime_get_sync(), before removing the ufshcd using ufshcd_remove(). But they are not dropping that reference count after ufshcd_remove() to balance the refcount. So drop the reference count by calling pm_runtime_put_noidle() after ufshcd_remove(). Since the behavior is applicable to all glue drivers, move the PM handling to ufshcd_pltfrm_remove(). Cc: stable@vger.kernel.org # 3.12 Fixes: 62694735ca95 ("[SCSI] ufs: Add runtime PM support for UFS host controller driver") Signed-off-by: Manivannan Sadhasivam Reviewed-by: Peter Wang --- drivers/ufs/host/tc-dwc-g210-pltfrm.c | 1 - drivers/ufs/host/ufs-exynos.c | 1 - drivers/ufs/host/ufs-mediatek.c | 1 - drivers/ufs/host/ufs-qcom.c | 1 - drivers/ufs/host/ufs-sprd.c | 1 - drivers/ufs/host/ufshcd-pltfrm.c | 2 ++ 6 files changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/ufs/host/tc-dwc-g210-pltfrm.c b/drivers/ufs/host/tc-dwc-g210-pltfrm.c index 113e0ef7b2cf..c6f8565ede21 100644 --- a/drivers/ufs/host/tc-dwc-g210-pltfrm.c +++ b/drivers/ufs/host/tc-dwc-g210-pltfrm.c @@ -76,7 +76,6 @@ static int tc_dwc_g210_pltfm_probe(struct platform_device *pdev) */ static void tc_dwc_g210_pltfm_remove(struct platform_device *pdev) { - pm_runtime_get_sync(&(pdev)->dev); ufshcd_pltfrm_remove(pdev); } diff --git a/drivers/ufs/host/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c index 953103b69e2c..6dedcc8b22b4 100644 --- a/drivers/ufs/host/ufs-exynos.c +++ b/drivers/ufs/host/ufs-exynos.c @@ -1960,7 +1960,6 @@ static void exynos_ufs_remove(struct platform_device *pdev) struct ufs_hba *hba = platform_get_drvdata(pdev); struct exynos_ufs *ufs = ufshcd_get_variant(hba); - pm_runtime_get_sync(&(pdev)->dev); ufshcd_pltfrm_remove(pdev); phy_power_off(ufs->phy); diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index 512b4e43787c..c834d38921b6 100644 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -1869,7 +1869,6 @@ static int ufs_mtk_probe(struct platform_device *pdev) */ static void ufs_mtk_remove(struct platform_device *pdev) { - pm_runtime_get_sync(&(pdev)->dev); ufshcd_pltfrm_remove(pdev); } diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 38732dd48331..91127fb17186 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -1845,7 +1845,6 @@ static void ufs_qcom_remove(struct platform_device *pdev) struct ufs_hba *hba = platform_get_drvdata(pdev); struct ufs_qcom_host *host = ufshcd_get_variant(hba); - pm_runtime_get_sync(&(pdev)->dev); ufshcd_pltfrm_remove(pdev); if (host->esi_enabled) platform_device_msi_free_irqs_all(hba->dev); diff --git a/drivers/ufs/host/ufs-sprd.c b/drivers/ufs/host/ufs-sprd.c index e455890cf7d4..d220978c2d8c 100644 --- a/drivers/ufs/host/ufs-sprd.c +++ b/drivers/ufs/host/ufs-sprd.c @@ -427,7 +427,6 @@ static int ufs_sprd_probe(struct platform_device *pdev) static void ufs_sprd_remove(struct platform_device *pdev) { - pm_runtime_get_sync(&(pdev)->dev); ufshcd_pltfrm_remove(pdev); } diff --git a/drivers/ufs/host/ufshcd-pltfrm.c b/drivers/ufs/host/ufshcd-pltfrm.c index bad5b1303eb6..b8dadd0a2f4c 100644 --- a/drivers/ufs/host/ufshcd-pltfrm.c +++ b/drivers/ufs/host/ufshcd-pltfrm.c @@ -532,8 +532,10 @@ void ufshcd_pltfrm_remove(struct platform_device *pdev) { struct ufs_hba *hba = platform_get_drvdata(pdev); + pm_runtime_get_sync(&pdev->dev); ufshcd_remove(hba); pm_runtime_disable(&pdev->dev); + pm_runtime_put_noidle(&pdev->dev); } EXPORT_SYMBOL_GPL(ufshcd_pltfrm_remove);