reset: renesas: Check return value of reset_control_deassert()

[ Upstream commit da18980a855edf44270f05455e0ec3f2472f64cc ]

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

Suggested-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/b2131908-0110-006b-862f-080517f3e2d8@gmail.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/reset/reset-rzg2l-usbphy-ctrl.c b/drivers/reset/reset-rzg2l-usbphy-ctrl.c
index 1e831503885066b132faafd811d43837e3b72154..a8dde46063602dcc799db1e7bac5a3eef9fdf9e7 100644 (file)
--- 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;