linux-kernel - [PATCH 4/4] usb: dwc2: fix error path with missing dwc2_drd

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Date:   Fri, 24 Jul 2020 14:37:48 +0200
From:   Amelie Delaunay <amelie.delaunay@...com>
To:     Minas Harutyunyan <hminas@...opsys.com>,
        Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>
CC:     <linux-usb@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        Fabrice Gasnier <fabrice.gasnier@...com>,
        Amelie Delaunay <amelie.delaunay@...com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: [PATCH 4/4] usb: dwc2: fix error path with missing dwc2_drd_exit

In case of failure, role switch has to be unregistered. It is done by
dwc2_drd_exit.

Fixes: bc0f0d4a5853 ("usb: dwc2: override PHY input signals with usb role switch support")
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Amelie Delaunay <amelie.delaunay@...com>
---
 drivers/usb/dwc2/platform.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c
index 68b56b43a45e..f4a0371c3e89 100644
--- a/drivers/usb/dwc2/platform.c
+++ b/drivers/usb/dwc2/platform.c
@@ -600,6 +600,8 @@ static int dwc2_driver_probe(struct platform_device *dev)
 	return 0;
 
 error_init:
+	dwc2_drd_exit(hsotg);
+
 	if (hsotg->params.activate_stm_id_vb_detection)
 		regulator_disable(hsotg->usb33d);
 error:
-- 
2.17.1