6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
commit d3326e6a3f9bf1e075be2201fb704c2fdf19e2b7 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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(-)
--- 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
*/
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 = {
--- 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(struc
*/
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 = {
--- a/drivers/ufs/host/ufs-exynos.c
+++ b/drivers/ufs/host/ufs-exynos.c
@@ -1964,7 +1964,7 @@ static void exynos_ufs_remove(struct pla
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);
--- a/drivers/ufs/host/ufs-hisi.c
+++ b/drivers/ufs/host/ufs-hisi.c
@@ -576,9 +576,7 @@ static int ufs_hisi_probe(struct platfor
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 = {
--- a/drivers/ufs/host/ufs-mediatek.c
+++ b/drivers/ufs/host/ufs-mediatek.c
@@ -1869,10 +1869,8 @@ out:
*/
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
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -1846,7 +1846,7 @@ static void ufs_qcom_remove(struct platf
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);
}
--- a/drivers/ufs/host/ufs-renesas.c
+++ b/drivers/ufs/host/ufs-renesas.c
@@ -390,9 +390,7 @@ static int ufs_renesas_probe(struct plat
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 = {
--- a/drivers/ufs/host/ufs-sprd.c
+++ b/drivers/ufs/host/ufs-sprd.c
@@ -427,10 +427,8 @@ static int ufs_sprd_probe(struct platfor
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 = {
--- a/drivers/ufs/host/ufshcd-pltfrm.c
+++ b/drivers/ufs/host/ufshcd-pltfrm.c
@@ -524,6 +524,19 @@ out:
}
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");
--- a/drivers/ufs/host/ufshcd-pltfrm.h
+++ b/drivers/ufs/host/ufshcd-pltfrm.h
@@ -31,6 +31,7 @@ int ufshcd_negotiate_pwr_params(const st
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);
