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From: Loic Poulain <loic.poulain@linaro.org>
To: Peter.Chen@nxp.com
Cc: linux-usb@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	david.brown@linaro.org, robh+dt@kernel.org,
	bjorn.andersson@linaro.org, andy.gross@linaro.org,
	andy.shevchenko@gmail.com, Loic Poulain <loic.poulain@linaro.org>
Subject: [v3,5/6] phy: qcom-usb-hs: Fix unbalanced notifier registration
Date: Tue,  4 Sep 2018 17:18:59 +0200	[thread overview]
Message-ID: <1536074340-14840-5-git-send-email-loic.poulain@linaro.org> (raw)

Phy power on/off cycle can happen several times during device life.
We then need to balance the extcon notifier registration accordingly.

Fixes: f0b5c2c96370 ("phy: qcom-usb-hs: Replace the extcon API")
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
---
 v2: don't use devres version (power-on always followed by power-off)
 v3: no change

 drivers/phy/qualcomm/phy-qcom-usb-hs.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-usb-hs.c b/drivers/phy/qualcomm/phy-qcom-usb-hs.c
index abbbe75..7153dde 100644
--- a/drivers/phy/qualcomm/phy-qcom-usb-hs.c
+++ b/drivers/phy/qualcomm/phy-qcom-usb-hs.c
@@ -160,8 +160,8 @@ static int qcom_usb_hs_phy_power_on(struct phy *phy)
 		/* setup initial state */
 		qcom_usb_hs_phy_vbus_notifier(&uphy->vbus_notify, state,
 					      uphy->vbus_edev);
-		ret = devm_extcon_register_notifier(&ulpi->dev, uphy->vbus_edev,
-				EXTCON_USB, &uphy->vbus_notify);
+		ret = extcon_register_notifier(uphy->vbus_edev, EXTCON_USB,
+					       &uphy->vbus_notify);
 		if (ret)
 			goto err_ulpi;
 	}
@@ -182,6 +182,11 @@ static int qcom_usb_hs_phy_power_off(struct phy *phy)
 {
 	struct qcom_usb_hs_phy *uphy = phy_get_drvdata(phy);
 
+	if (uphy->vbus_edev) {
+		extcon_unregister_notifier(uphy->vbus_edev, EXTCON_USB,
+					   &uphy->vbus_notify);
+	}
+
 	regulator_disable(uphy->v3p3);
 	regulator_disable(uphy->v1p8);
 	clk_disable_unprepare(uphy->sleep_clk);

                 reply	other threads:[~2018-09-04 15:18 UTC|newest]

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