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@xxxxxxxxxxxxxxx # 3.12
Fixes: 62694735ca95 ("[SCSI] ufs: Add runtime PM support for UFS host controller driver")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20241111-ufs_bug_fix-v1-3-45ad8b62f02e@xxxxxxxxxx
Reviewed-by: Peter Wang <peter.wang@xxxxxxxxxxxx>
Reviewed-by: Bean Huo <beanhuo@xxxxxxxxxx>
Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
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 91827b3e582b..b20f6526777a 100644
--- a/drivers/ufs/host/ufs-exynos.c
+++ b/drivers/ufs/host/ufs-exynos.c
@@ -1993,7 +1993,7 @@ 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 06ab1e5e8b6f..b444146419de 100644
--- a/drivers/ufs/host/ufs-mediatek.c
+++ b/drivers/ufs/host/ufs-mediatek.c
@@ -1879,10 +1879,8 @@ 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 5220ec78021d..3762337d7576 100644
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -1864,7 +1864,7 @@ 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 3ff97112e1f6..21a64b34397d 100644
--- a/drivers/ufs/host/ufs-renesas.c
+++ b/drivers/ufs/host/ufs-renesas.c
@@ -397,9 +397,7 @@ 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@xxxxxxxxxxx>");
MODULE_AUTHOR("Vinayak Holikatti <h.vinayak@xxxxxxxxxxx>");
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);
