linux-kernel - [PATCH v1 3/3] usb: ohci-platform: Use devm_of_phy_get_by

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Message-ID: <1427921349-18173-4-git-send-email-arun.ramamurthy@broadcom.com>
Date:	Wed, 1 Apr 2015 13:49:09 -0700
From:	Arun Ramamurthy <arun.ramamurthy@...adcom.com>
To:	Kishon Vijay Abraham I <kishon@...com>,
	Tony Prisk <linux@...sktech.co.nz>,
	Alan Stern <stern@...land.harvard.edu>,
	"Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
	Arnd Bergmann <arnd@...db.de>
CC:	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-usb@...r.kernel.org>, Dmitry Torokhov <dtor@...gle.com>,
	"Anatol Pomazau" <anatol@...gle.com>,
	Jonathan Richardson <jonathar@...adcom.com>,
	Scott Branden <sbranden@...adcom.com>,
	Ray Jui <rjui@...adcom.com>,
	<bcm-kernel-feedback-list@...adcom.com>,
	Arun Ramamurthy <arun.ramamurthy@...adcom.com>
Subject: [PATCH v1 3/3] usb: ohci-platform: Use devm_of_phy_get_by_index

Getting phys by index instead of phy names so that we do
not have to create a naming scheme when multiple phys are present

Signed-off-by: Arun Ramamurthy <arun.ramamurthy@...adcom.com>
Reviewed-by: Ray Jui <rjui@...adcom.com>
Reviewed-by: Scott Branden <sbranden@...adcom.com>
---
 drivers/usb/host/ohci-platform.c | 70 ++++++++++++++--------------------------
 1 file changed, 25 insertions(+), 45 deletions(-)

diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c
index 185ceee..0f8edf6 100644
--- a/drivers/usb/host/ohci-platform.c
+++ b/drivers/usb/host/ohci-platform.c
@@ -57,15 +57,13 @@ static int ohci_platform_power_on(struct platform_device *dev)
 	}
 
 	for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
-		if (priv->phys[phy_num]) {
-			ret = phy_init(priv->phys[phy_num]);
-			if (ret)
-				goto err_exit_phy;
-			ret = phy_power_on(priv->phys[phy_num]);
-			if (ret) {
-				phy_exit(priv->phys[phy_num]);
-				goto err_exit_phy;
-			}
+		ret = phy_init(priv->phys[phy_num]);
+		if (ret)
+			goto err_exit_phy;
+		ret = phy_power_on(priv->phys[phy_num]);
+		if (ret) {
+			phy_exit(priv->phys[phy_num]);
+			goto err_exit_phy;
 		}
 	}
 
@@ -73,10 +71,8 @@ static int ohci_platform_power_on(struct platform_device *dev)
 
 err_exit_phy:
 	while (--phy_num >= 0) {
-		if (priv->phys[phy_num]) {
-			phy_power_off(priv->phys[phy_num]);
-			phy_exit(priv->phys[phy_num]);
-		}
+		phy_power_off(priv->phys[phy_num]);
+		phy_exit(priv->phys[phy_num]);
 	}
 err_disable_clks:
 	while (--clk >= 0)
@@ -92,10 +88,8 @@ static void ohci_platform_power_off(struct platform_device *dev)
 	int clk, phy_num;
 
 	for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
-		if (priv->phys[phy_num]) {
-			phy_power_off(priv->phys[phy_num]);
-			phy_exit(priv->phys[phy_num]);
-		}
+		phy_power_off(priv->phys[phy_num]);
+		phy_exit(priv->phys[phy_num]);
 	}
 
 	for (clk = OHCI_MAX_CLKS - 1; clk >= 0; clk--)
@@ -123,7 +117,6 @@ static int ohci_platform_probe(struct platform_device *dev)
 	struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
 	struct ohci_platform_priv *priv;
 	struct ohci_hcd *ohci;
-	const char *phy_name;
 	int err, irq, phy_num, clk = 0;
 
 	if (usb_disabled())
@@ -174,36 +167,23 @@ static int ohci_platform_probe(struct platform_device *dev)
 
 		priv->num_phys = of_count_phandle_with_args(dev->dev.of_node,
 				"phys", "#phy-cells");
-		priv->num_phys = priv->num_phys > 0 ? priv->num_phys : 1;
 
-		priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
-				sizeof(struct phy *), GFP_KERNEL);
-		if (!priv->phys)
-			return -ENOMEM;
+		if (priv->num_phys > 0) {
+			priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
+					    sizeof(struct phy *), GFP_KERNEL);
+			if (!priv->phys)
+				return -ENOMEM;
+		} else
+			priv->num_phys = 0;
 
 		for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
-				err = of_property_read_string_index(
-						dev->dev.of_node,
-						"phy-names", phy_num,
-						&phy_name);
-
-				if (err < 0) {
-					if (priv->num_phys > 1) {
-						dev_err(&dev->dev, "phy-names not provided");
-						goto err_put_hcd;
-					} else
-						phy_name = "usb";
-				}
-
-				priv->phys[phy_num] = devm_phy_get(&dev->dev,
-						phy_name);
-				if (IS_ERR(priv->phys[phy_num])) {
-					err = PTR_ERR(priv->phys[phy_num]);
-					if ((priv->num_phys > 1) ||
-					    (err == -EPROBE_DEFER))
-						goto err_put_hcd;
-					priv->phys[phy_num] = NULL;
-				}
+			priv->phys[phy_num] = devm_of_phy_get_by_index(&dev->dev
+						, dev->dev.of_node
+						, phy_num);
+			if (IS_ERR(priv->phys[phy_num])) {
+				err = PTR_ERR(priv->phys[phy_num]);
+				goto err_put_hcd;
+			}
 		}
 
 		for (clk = 0; clk < OHCI_MAX_CLKS; clk++) {
-- 
2.3.4

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