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

From: Bryan O'Donoghue
Date: Wed Aug 23 2023 - 05:59:01 EST


On 23/08/2023 10:15, 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.

Signed-off-by: Hui Liu <quic_huliu@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,

Is this a fix for a real bug you've seen or a hypothetical use-case fix ?

---
bod