linux-kernel - [PATCH 5.15 054/124] reset: renesas: Check return value of reset_control

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Message-Id: <20220426081748.837896691@linuxfoundation.org>
Date:   Tue, 26 Apr 2022 10:20:55 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Biju Das <biju.das.jz@...renesas.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 054/124] reset: renesas: Check return value of reset_control_deassert()

From: Heiner Kallweit <hkallweit1@...il.com>

[ Upstream commit da18980a855edf44270f05455e0ec3f2472f64cc ]

Deasserting the reset is vital, therefore bail out in case of error.

Suggested-by: Biju Das <biju.das.jz@...renesas.com>
Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
Reviewed-by: Biju Das <biju.das.jz@...renesas.com>
Link: https://lore.kernel.org/r/b2131908-0110-006b-862f-080517f3e2d8@gmail.com
Signed-off-by: Philipp Zabel <p.zabel@...gutronix.de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/reset/reset-rzg2l-usbphy-ctrl.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/reset/reset-rzg2l-usbphy-ctrl.c b/drivers/reset/reset-rzg2l-usbphy-ctrl.c
index 1e8315038850..a8dde4606360 100644
--- a/drivers/reset/reset-rzg2l-usbphy-ctrl.c
+++ b/drivers/reset/reset-rzg2l-usbphy-ctrl.c
@@ -121,7 +121,9 @@ static int rzg2l_usbphy_ctrl_probe(struct platform_device *pdev)
 		return dev_err_probe(dev, PTR_ERR(priv->rstc),
 				     "failed to get reset\n");
 
-	reset_control_deassert(priv->rstc);
+	error = reset_control_deassert(priv->rstc);
+	if (error)
+		return error;
 
 	priv->rcdev.ops = &rzg2l_usbphy_ctrl_reset_ops;
 	priv->rcdev.of_reset_n_cells = 1;
-- 
2.35.1