netdev - [PATCH 7/7] usb: host: ohci-exynos: Convert to devm_of_phy_optional

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Date:   Wed, 18 Jan 2023 11:15:20 +0100
From:   Geert Uytterhoeven <geert+renesas@...der.be>
To:     Madalin Bucur <madalin.bucur@....com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Horatiu Vultur <horatiu.vultur@...rochip.com>,
        UNGLinuxDriver@...rochip.com,
        Thierry Reding <thierry.reding@...il.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Siddharth Vadapalli <s-vadapalli@...com>,
        Russell King <linux@...linux.org.uk>
Cc:     netdev@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-pci@...r.kernel.org, linux-phy@...ts.infradead.org,
        linux-usb@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH 7/7] usb: host: ohci-exynos: Convert to devm_of_phy_optional_get()

Use the new devm_of_phy_optional_get() helper instead of open-coding the
same operation.

This lets us drop several checks for IS_ERR(), as phy_power_{on,off}()
handle NULL parameters fine.

Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
 drivers/usb/host/ohci-exynos.c | 24 +++++++-----------------
 1 file changed, 7 insertions(+), 17 deletions(-)

diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c
index 8d7977fd5d3bd502..8dd9c3b2411c383f 100644
--- a/drivers/usb/host/ohci-exynos.c
+++ b/drivers/usb/host/ohci-exynos.c
@@ -69,19 +69,12 @@ static int exynos_ohci_get_phy(struct device *dev,
 			return -EINVAL;
 		}
 
-		phy = devm_of_phy_get(dev, child, NULL);
+		phy = devm_of_phy_optional_get(dev, child, NULL);
 		exynos_ohci->phy[phy_number] = phy;
 		if (IS_ERR(phy)) {
-			ret = PTR_ERR(phy);
-			if (ret == -EPROBE_DEFER) {
-				of_node_put(child);
-				return ret;
-			} else if (ret != -ENOSYS && ret != -ENODEV) {
-				dev_err(dev,
-					"Error retrieving usb2 phy: %d\n", ret);
-				of_node_put(child);
-				return ret;
-			}
+			of_node_put(child);
+			return dev_err_probe(dev, PTR_ERR(phy),
+					     "Error retrieving usb2 phy\n");
 		}
 	}
 
@@ -97,12 +90,10 @@ static int exynos_ohci_phy_enable(struct device *dev)
 	int ret = 0;
 
 	for (i = 0; ret == 0 && i < PHY_NUMBER; i++)
-		if (!IS_ERR(exynos_ohci->phy[i]))
-			ret = phy_power_on(exynos_ohci->phy[i]);
+		ret = phy_power_on(exynos_ohci->phy[i]);
 	if (ret)
 		for (i--; i >= 0; i--)
-			if (!IS_ERR(exynos_ohci->phy[i]))
-				phy_power_off(exynos_ohci->phy[i]);
+			phy_power_off(exynos_ohci->phy[i]);
 
 	return ret;
 }
@@ -114,8 +105,7 @@ static void exynos_ohci_phy_disable(struct device *dev)
 	int i;
 
 	for (i = 0; i < PHY_NUMBER; i++)
-		if (!IS_ERR(exynos_ohci->phy[i]))
-			phy_power_off(exynos_ohci->phy[i]);
+		phy_power_off(exynos_ohci->phy[i]);
 }
 
 static int exynos_ohci_probe(struct platform_device *pdev)
-- 
2.34.1