From patchwork Mon Nov 11 17:48:32 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: 13871106 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 40769D3ABDA for ; Mon, 11 Nov 2024 17:59:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Reply-To:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To: References:Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version: Subject:Date:From:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=6VuqMGEjorW3U0VSuEH2udcD/yIeKObZ0VvADteNWSM=; b=pD0UlBPfYaIivQtJBGvQGX6SfL tqqzI3YHrrMA0EdttLxJvErI+gCGzFzHMz4KeneRxWxC20SMC5q6C54VoZjpXyPkr9NoxUFI5G2aV T1j6ctXu0L3EEK4Oi6H2y30EKfglxhh9Cyv+v3itZqGWt/5h/5UIqMOrdBfOCu37DUAPAiJ5LXV8Z +vAv6gtd6GnvrnWMT8wDBVvSV9aRFwM+sCgawoKzHekmFX2xPVTTrO7JoEErmVUtk9T1r83rAZEcK sRcftctdvWTGQ6JLa3fUIevMbnry2O4LZRrqV4o33V5PRw5OjhuiZ3VMfMEkcnN8+vnZcnugPzUyC 3BGg9qDA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tAYhK-00000000oDX-1bbc; Mon, 11 Nov 2024 17:59:34 +0000 Received: from nyc.source.kernel.org ([147.75.193.91]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tAYWp-00000000mGe-0PTo; Mon, 11 Nov 2024 17:48:46 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 64F7FA417D1; Mon, 11 Nov 2024 17:46:44 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 4A457C4CED8; 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=SOb/svMnfBE70UmgHVHZ83yrAm9N4yanjEVLe7239+w=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=M5CWUkTPz6OCGVKJrWrNKk807OEF7xTW55Hzjum0MoXapsNyhMtWBgyfaQAM9zbia Pc85xmSY+LdvIsx4joB7hU0G9CHWpjFrblQUw3B10SC2lKsuxjt3AgyMkgh+ZRa3I5 ZRCXOfupZIW9ImxPU7fv+k2ILaZtquhUWx0RH3zzUbogxMq5qLtrvHZqr0KQg99HOp h8un79+lAFofx6e5DGK8p5XlNJCJL0AnIZsxegWSB4WR41cZUud+99s2UuH71DZMc9 YFNhuYvtpnv2M8bWe07UCV9L9FhqbcaZuvadMykzp0Ygu+uhinSxok0VOQBHywANcq 3x3//wvZfh2Jg== 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 3F521D3ABDC; Mon, 11 Nov 2024 17:48:38 +0000 (UTC) From: Manivannan Sadhasivam via B4 Relay Date: Mon, 11 Nov 2024 23:18:32 +0530 Subject: [PATCH 3/5] scsi: ufs: pltfrm: Disable runtime PM during removal of glue drivers MIME-Version: 1.0 Message-Id: <20241111-ufs_bug_fix-v1-3-45ad8b62f02e@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=6985; i=manivannan.sadhasivam@linaro.org; h=from:subject:message-id; bh=Sy95crq9tnc13krDmPxLc+XJOqVK0Wt1rbOYDput31Q=; b=owEBbQGS/pANAwAKAVWfEeb+kc71AcsmYgBnMkNzB9iz8QMXyNpVEgtQ5ZelZO076jLLXfkRg asZo5G3GWeJATMEAAEKAB0WIQRnpUMqgUjL2KRYJ5dVnxHm/pHO9QUCZzJDcwAKCRBVnxHm/pHO 9RINB/4kKYhPEGlh+z0oVskBAUcdG9Do5O49lzzdpQb16Q/tr4H5kvW/5giR5D8w2zt3YsvXW/x p5impfVanaunnhCfFnIqm6yQJFWS0xmUbA67bZU7f60uMmSBnU8pRYH7w1gagJ7KygOGopeOrDL JsCxxoWOy6rJWkYDOw0syS0hs/GhzQa3wptkQ6aarRLAfHwVNq7yzOt09V/GXcgBxCz3BXjE9mG hI8H7Vsz3A3z6iqmNYp+H9Jngpy5EJUk7fccNVJqA1lUegiCAow+2pKXjCEjgKXv41S5pbHFUlT wRSw+JWjdzoHJ2DETem066mlrMXITAspkAfuXdcDbcyF9JgO 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241111_094843_412861_DBBD2F87 X-CRM114-Status: GOOD ( 16.54 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: manivannan.sadhasivam@linaro.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Manivannan Sadhasivam When the UFSHCD platform glue drivers are removed, runtime PM should be disabled using pm_runtime_disable() to balance the enablement done in ufshcd_pltfrm_init(). This is also reported by PM core when the glue driver is removed and inserted again: ufshcd-qcom 1d84000.ufshc: Unbalanced pm_runtime_enable! So disable runtime PM using a new helper API ufshcd_pltfrm_remove(), that also takes care of removing ufshcd. This helper should be called during the remove() stage of glue drivers. 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/cdns-pltfrm.c | 4 +--- drivers/ufs/host/tc-dwc-g210-pltfrm.c | 4 +--- drivers/ufs/host/ufs-exynos.c | 2 +- drivers/ufs/host/ufs-hisi.c | 4 +--- drivers/ufs/host/ufs-mediatek.c | 4 +--- drivers/ufs/host/ufs-qcom.c | 2 +- drivers/ufs/host/ufs-renesas.c | 4 +--- drivers/ufs/host/ufs-sprd.c | 4 +--- drivers/ufs/host/ufshcd-pltfrm.c | 13 +++++++++++++ drivers/ufs/host/ufshcd-pltfrm.h | 1 + 10 files changed, 22 insertions(+), 20 deletions(-) diff --git a/drivers/ufs/host/cdns-pltfrm.c b/drivers/ufs/host/cdns-pltfrm.c index 66811d8d1929..b31aa8411151 100644 --- a/drivers/ufs/host/cdns-pltfrm.c +++ b/drivers/ufs/host/cdns-pltfrm.c @@ -307,9 +307,7 @@ static int cdns_ufs_pltfrm_probe(struct platform_device *pdev) */ static void cdns_ufs_pltfrm_remove(struct platform_device *pdev) { - struct ufs_hba *hba = platform_get_drvdata(pdev); - - ufshcd_remove(hba); + ufshcd_pltfrm_remove(pdev); } static const struct dev_pm_ops cdns_ufs_dev_pm_ops = { diff --git a/drivers/ufs/host/tc-dwc-g210-pltfrm.c b/drivers/ufs/host/tc-dwc-g210-pltfrm.c index a3877592604d..113e0ef7b2cf 100644 --- a/drivers/ufs/host/tc-dwc-g210-pltfrm.c +++ b/drivers/ufs/host/tc-dwc-g210-pltfrm.c @@ -76,10 +76,8 @@ static int tc_dwc_g210_pltfm_probe(struct platform_device *pdev) */ static void tc_dwc_g210_pltfm_remove(struct platform_device *pdev) { - struct ufs_hba *hba = platform_get_drvdata(pdev); - pm_runtime_get_sync(&(pdev)->dev); - ufshcd_remove(hba); + ufshcd_pltfrm_remove(pdev); } static const struct dev_pm_ops tc_dwc_g210_pltfm_pm_ops = { diff --git a/drivers/ufs/host/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c index 5867e6338562..953103b69e2c 100644 --- a/drivers/ufs/host/ufs-exynos.c +++ b/drivers/ufs/host/ufs-exynos.c @@ -1961,7 +1961,7 @@ static void exynos_ufs_remove(struct platform_device *pdev) struct exynos_ufs *ufs = ufshcd_get_variant(hba); pm_runtime_get_sync(&(pdev)->dev); - ufshcd_remove(hba); + ufshcd_pltfrm_remove(pdev); phy_power_off(ufs->phy); phy_exit(ufs->phy); diff --git a/drivers/ufs/host/ufs-hisi.c b/drivers/ufs/host/ufs-hisi.c index 5ee73ff05251..501609521b26 100644 --- a/drivers/ufs/host/ufs-hisi.c +++ b/drivers/ufs/host/ufs-hisi.c @@ -576,9 +576,7 @@ static int ufs_hisi_probe(struct platform_device *pdev) static void ufs_hisi_remove(struct platform_device *pdev) { - struct ufs_hba *hba = platform_get_drvdata(pdev); - - ufshcd_remove(hba); + ufshcd_pltfrm_remove(pdev); } static const struct dev_pm_ops ufs_hisi_pm_ops = { diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index 9a5919434c4e..512b4e43787c 100644 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -1869,10 +1869,8 @@ static int ufs_mtk_probe(struct platform_device *pdev) */ static void ufs_mtk_remove(struct platform_device *pdev) { - struct ufs_hba *hba = platform_get_drvdata(pdev); - pm_runtime_get_sync(&(pdev)->dev); - ufshcd_remove(hba); + ufshcd_pltfrm_remove(pdev); } #ifdef CONFIG_PM_SLEEP diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 1bcc538ef8af..38732dd48331 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -1846,7 +1846,7 @@ static void ufs_qcom_remove(struct platform_device *pdev) struct ufs_qcom_host *host = ufshcd_get_variant(hba); pm_runtime_get_sync(&(pdev)->dev); - ufshcd_remove(hba); + ufshcd_pltfrm_remove(pdev); if (host->esi_enabled) platform_device_msi_free_irqs_all(hba->dev); } diff --git a/drivers/ufs/host/ufs-renesas.c b/drivers/ufs/host/ufs-renesas.c index 8711e5cbc968..b3a5fc2d44e7 100644 --- a/drivers/ufs/host/ufs-renesas.c +++ b/drivers/ufs/host/ufs-renesas.c @@ -390,9 +390,7 @@ static int ufs_renesas_probe(struct platform_device *pdev) static void ufs_renesas_remove(struct platform_device *pdev) { - struct ufs_hba *hba = platform_get_drvdata(pdev); - - ufshcd_remove(hba); + ufshcd_pltfrm_remove(pdev); } static struct platform_driver ufs_renesas_platform = { diff --git a/drivers/ufs/host/ufs-sprd.c b/drivers/ufs/host/ufs-sprd.c index d8b165908809..e455890cf7d4 100644 --- a/drivers/ufs/host/ufs-sprd.c +++ b/drivers/ufs/host/ufs-sprd.c @@ -427,10 +427,8 @@ static int ufs_sprd_probe(struct platform_device *pdev) static void ufs_sprd_remove(struct platform_device *pdev) { - struct ufs_hba *hba = platform_get_drvdata(pdev); - pm_runtime_get_sync(&(pdev)->dev); - ufshcd_remove(hba); + ufshcd_pltfrm_remove(pdev); } static const struct dev_pm_ops ufs_sprd_pm_ops = { diff --git a/drivers/ufs/host/ufshcd-pltfrm.c b/drivers/ufs/host/ufshcd-pltfrm.c index 1f4f30d6cb42..bad5b1303eb6 100644 --- a/drivers/ufs/host/ufshcd-pltfrm.c +++ b/drivers/ufs/host/ufshcd-pltfrm.c @@ -524,6 +524,19 @@ int ufshcd_pltfrm_init(struct platform_device *pdev, } EXPORT_SYMBOL_GPL(ufshcd_pltfrm_init); +/** + * ufshcd_pltfrm_remove - Remove ufshcd platform + * @pdev: pointer to Platform device handle + */ +void ufshcd_pltfrm_remove(struct platform_device *pdev) +{ + struct ufs_hba *hba = platform_get_drvdata(pdev); + + ufshcd_remove(hba); + pm_runtime_disable(&pdev->dev); +} +EXPORT_SYMBOL_GPL(ufshcd_pltfrm_remove); + MODULE_AUTHOR("Santosh Yaragnavi "); MODULE_AUTHOR("Vinayak Holikatti "); MODULE_DESCRIPTION("UFS host controller Platform bus based glue driver"); diff --git a/drivers/ufs/host/ufshcd-pltfrm.h b/drivers/ufs/host/ufshcd-pltfrm.h index df387be5216b..3017f8e8f93c 100644 --- a/drivers/ufs/host/ufshcd-pltfrm.h +++ b/drivers/ufs/host/ufshcd-pltfrm.h @@ -31,6 +31,7 @@ int ufshcd_negotiate_pwr_params(const struct ufs_host_params *host_params, void ufshcd_init_host_params(struct ufs_host_params *host_params); int ufshcd_pltfrm_init(struct platform_device *pdev, const struct ufs_hba_variant_ops *vops); +void ufshcd_pltfrm_remove(struct platform_device *pdev); int ufshcd_populate_vreg(struct device *dev, const char *name, struct ufs_vreg **out_vreg, bool skip_current);