| Message ID | 20241111-ufs_bug_fix-v1-3-45ad8b62f02e@linaro.org (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | scsi: ufs: Bug fixes for ufs core and platform drivers | expand |
On Mon, 2024-11-11 at 23:18 +0530, Manivannan Sadhasivam via B4 Relay wrote: > External email : Please do not click links or open attachments until > you have verified the sender or the content. > > > From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> > > 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 < > manivannan.sadhasivam@linaro.org> > --- > 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(-) > > Reviewed-by: Peter Wang <peter.wang@mediatek.com>
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 <santosh.sy@samsung.com>"); MODULE_AUTHOR("Vinayak Holikatti <h.vinayak@samsung.com>"); 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);