netdev - [PATCH] net: dsa: bcm_sf2: simplify optional reset handling

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Message-Id: <20210305091448.19748-1-p.zabel@pengutronix.de>
Date:   Fri,  5 Mar 2021 10:14:48 +0100
From:   Philipp Zabel <p.zabel@...gutronix.de>
To:     netdev@...r.kernel.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>
Subject: [PATCH] net: dsa: bcm_sf2: simplify optional reset handling

As of commit bb475230b8e5 ("reset: make optional functions really
optional"), the reset framework API calls use NULL pointers to describe
optional, non-present reset controls.

This allows to unconditionally return errors from
devm_reset_control_get_optional_exclusive.

Signed-off-by: Philipp Zabel <p.zabel@...gutronix.de>
---
 drivers/net/dsa/bcm_sf2.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index 5ee8103b8e9c..f277df922fcd 100644
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -406,7 +406,7 @@ static int bcm_sf2_sw_rst(struct bcm_sf2_priv *priv)
 	/* The watchdog reset does not work on 7278, we need to hit the
 	 * "external" reset line through the reset controller.
 	 */
-	if (priv->type == BCM7278_DEVICE_ID && !IS_ERR(priv->rcdev)) {
+	if (priv->type == BCM7278_DEVICE_ID) {
 		ret = reset_control_assert(priv->rcdev);
 		if (ret)
 			return ret;
@@ -1265,7 +1265,7 @@ static int bcm_sf2_sw_probe(struct platform_device *pdev)
 
 	priv->rcdev = devm_reset_control_get_optional_exclusive(&pdev->dev,
 								"switch");
-	if (PTR_ERR(priv->rcdev) == -EPROBE_DEFER)
+	if (IS_ERR(priv->rcdev))
 		return PTR_ERR(priv->rcdev);
 
 	/* Auto-detection using standard registers will not work, so
@@ -1426,7 +1426,7 @@ static int bcm_sf2_sw_remove(struct platform_device *pdev)
 	bcm_sf2_mdio_unregister(priv);
 	clk_disable_unprepare(priv->clk_mdiv);
 	clk_disable_unprepare(priv->clk);
-	if (priv->type == BCM7278_DEVICE_ID && !IS_ERR(priv->rcdev))
+	if (priv->type == BCM7278_DEVICE_ID)
 		reset_control_assert(priv->rcdev);
 
 	return 0;
-- 
2.29.2