| Message ID | 20241111-ufs_bug_fix-v1-4-45ad8b62f02e@linaro.org |
|---|---|
| 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> > > 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 < > manivannan.sadhasivam@linaro.org> > --- > 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(-) > > Reviewed-by: Peter Wang <peter.wang@mediatek.com>
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);