Re: [PATCH v2] usb: typec: qcom: check regulator enable status before disabling it

From: Bryan O'Donoghue
Date: Thu Aug 24 2023 - 04:37:41 EST


On 24/08/2023 03:32, Hui Liu via B4 Relay wrote:
From: Hui Liu <quic_huliu@xxxxxxxxxxx>

Check regulator enable status before disabling it to avoid
unbalanced regulator disable warnings.

Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Fixes: a4422ff22142 ("usb: typec: qcom: Add Qualcomm PMIC Type-C driver")
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
Signed-off-by: Hui Liu <quic_huliu@xxxxxxxxxxx>
---
Changes in v2:
- Add Fixes tag
- Link to v1: https://lore.kernel.org/r/20230823-qcom-tcpc-v1-1-fa81a09ca056@xxxxxxxxxxx
---
drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c
index bb0b8479d80f..ca616b17b5b6 100644
--- a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c
+++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_pdphy.c
@@ -422,7 +422,8 @@ static int qcom_pmic_typec_pdphy_disable(struct pmic_typec_pdphy *pmic_typec_pdp
ret = regmap_write(pmic_typec_pdphy->regmap,
pmic_typec_pdphy->base + USB_PDPHY_EN_CONTROL_REG, 0);
- regulator_disable(pmic_typec_pdphy->vdd_pdphy);
+ if (regulator_is_enabled(pmic_typec_pdphy->vdd_pdphy))
+ regulator_disable(pmic_typec_pdphy->vdd_pdphy);
return ret;
}

---
base-commit: bbb9e06d2c6435af9c62074ad7048910eeb2e7bc
change-id: 20230822-qcom-tcpc-d41954ac65fa

Best regards,
Acked-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>