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patch "usb: dwc3: meson-g12a: Disable the regulator in the error handling" added to usb-linus

PATCH [email protected] 1 participant 1 message Jun 4, 2021

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This is a note to let you know that I've just added the patch titled

usb: dwc3: meson-g12a: Disable the regulator in the error handling

to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 1d0d3d818eafe1963ec1eaf302175cd14938188e Mon Sep 17 00:00:00 2001
From: Christophe JAILLET <[email protected]>
Date: Fri, 21 May 2021 18:55:50 +0200
Subject: usb: dwc3: meson-g12a: Disable the regulator in the error handling
path of the probe

If an error occurs after a successful 'regulator_enable()' call, 'regulator_disable()' must be called.

Fix the error handling path of the probe accordingly.

The remove function doesn't need to be fixed, because the 'regulator_disable()' call is already hidden in 'dwc3_meson_g12a_suspend()' which is called via 'pm_runtime_set_suspended()' in the remove function.

---
 drivers/usb/dwc3/dwc3-meson-g12a.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
drivers/usb/dwc3/dwc3-meson-g12a.c +6 -2
index bdf1f98dfad8..804957525130 100644
@@ -772,13 +772,13 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev)
 
 	ret = priv->drvdata->usb_init(priv);
 	if (ret)
-		goto err_disable_clks;
+		goto err_disable_regulator;
 
 	/* Init PHYs */
 	for (i = 0 ; i < PHY_COUNT ; ++i) {
 		ret = phy_init(priv->phys[i]);
 		if (ret)
-			goto err_disable_clks;
+			goto err_disable_regulator;
 	}
 
 	/* Set PHY Power */
@@ -816,6 +816,10 @@ static int dwc3_meson_g12a_probe(struct platform_device *pdev)
 	for (i = 0 ; i < PHY_COUNT ; ++i)
 		phy_exit(priv->phys[i]);
 
+err_disable_regulator:
+	if (priv->vbus)
+		regulator_disable(priv->vbus);
+
 err_disable_clks:
 	clk_bulk_disable_unprepare(priv->drvdata->num_clks,
 				   priv->drvdata->clks);
Signature · 1 line
2.31.1