aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/bcm63xx/patches-4.14/001-4.15-11-bcm63xx_enet-use-managed-functions-for-clock-ioremap.patch
blob: cf0971c911fbdca3aa063200556e64cbd290d728 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
From 179a445ae4ef36ec44f4aea18e5f42d21334d186 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jonas.gorski@gmail.com>
Date: Sat, 25 Feb 2017 12:39:25 +0100
Subject: [PATCH 4/6] bcm63xx_enet: use managed functions for clock/ioremap

Use managed functions where possible to reduce the amount of resource
handling on error and remove paths.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
 drivers/net/ethernet/broadcom/bcm63xx_enet.c | 54 +++++++---------------------
 1 file changed, 12 insertions(+), 42 deletions(-)

--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
@@ -1768,14 +1768,14 @@ static int bcm_enet_probe(struct platfor
 		clk_name = "enet1";
 	}
 
-	priv->mac_clk = clk_get(&pdev->dev, clk_name);
+	priv->mac_clk = devm_clk_get(&pdev->dev, clk_name);
 	if (IS_ERR(priv->mac_clk)) {
 		ret = PTR_ERR(priv->mac_clk);
 		goto out;
 	}
 	ret = clk_prepare_enable(priv->mac_clk);
 	if (ret)
-		goto out_put_clk_mac;
+		goto out;
 
 	/* initialize default and fetch platform data */
 	priv->rx_ring_size = BCMENET_DEF_RX_DESC;
@@ -1803,7 +1803,7 @@ static int bcm_enet_probe(struct platfor
 
 	if (priv->mac_id == 0 && priv->has_phy && !priv->use_external_mii) {
 		/* using internal PHY, enable clock */
-		priv->phy_clk = clk_get(&pdev->dev, "ephy");
+		priv->phy_clk = devm_clk_get(&pdev->dev, "ephy");
 		if (IS_ERR(priv->phy_clk)) {
 			ret = PTR_ERR(priv->phy_clk);
 			priv->phy_clk = NULL;
@@ -1811,7 +1811,7 @@ static int bcm_enet_probe(struct platfor
 		}
 		ret = clk_prepare_enable(priv->phy_clk);
 		if (ret)
-			goto out_put_clk_phy;
+			goto out_disable_clk_mac;
 	}
 
 	/* do minimal hardware init to be able to probe mii bus */
@@ -1908,14 +1908,8 @@ out_uninit_hw:
 	if (priv->phy_clk)
 		clk_disable_unprepare(priv->phy_clk);
 
-out_put_clk_phy:
-	if (priv->phy_clk)
-		clk_put(priv->phy_clk);
-
 out_disable_clk_mac:
 	clk_disable_unprepare(priv->mac_clk);
-out_put_clk_mac:
-	clk_put(priv->mac_clk);
 out:
 	free_netdev(dev);
 	return ret;
@@ -1951,12 +1945,10 @@ static int bcm_enet_remove(struct platfo
 	}
 
 	/* disable hw block clocks */
-	if (priv->phy_clk) {
+	if (priv->phy_clk)
 		clk_disable_unprepare(priv->phy_clk);
-		clk_put(priv->phy_clk);
-	}
+
 	clk_disable_unprepare(priv->mac_clk);
-	clk_put(priv->mac_clk);
 
 	free_netdev(dev);
 	return 0;
@@ -2739,26 +2731,20 @@ static int bcm_enetsw_probe(struct platf
 	if (ret)
 		goto out;
 
-	if (!request_mem_region(res_mem->start, resource_size(res_mem),
-				"bcm63xx_enetsw")) {
-		ret = -EBUSY;
+	priv->base = devm_ioremap_resource(&pdev->dev, res_mem);
+	if (IS_ERR(priv->base)) {
+		ret = PTR_ERR(priv->base);
 		goto out;
 	}
 
-	priv->base = ioremap(res_mem->start, resource_size(res_mem));
-	if (priv->base == NULL) {
-		ret = -ENOMEM;
-		goto out_release_mem;
-	}
-
-	priv->mac_clk = clk_get(&pdev->dev, "enetsw");
+	priv->mac_clk = devm_clk_get(&pdev->dev, "enetsw");
 	if (IS_ERR(priv->mac_clk)) {
 		ret = PTR_ERR(priv->mac_clk);
-		goto out_unmap;
+		goto out;
 	}
 	ret = clk_prepare_enable(priv->mac_clk);
 	if (ret)
-		goto out_put_clk;
+		goto out;
 
 	priv->rx_chan = 0;
 	priv->tx_chan = 1;
@@ -2790,15 +2776,6 @@ static int bcm_enetsw_probe(struct platf
 
 out_disable_clk:
 	clk_disable_unprepare(priv->mac_clk);
-
-out_put_clk:
-	clk_put(priv->mac_clk);
-
-out_unmap:
-	iounmap(priv->base);
-
-out_release_mem:
-	release_mem_region(res_mem->start, resource_size(res_mem));
 out:
 	free_netdev(dev);
 	return ret;
@@ -2810,20 +2787,13 @@ static int bcm_enetsw_remove(struct plat
 {
 	struct bcm_enet_priv *priv;
 	struct net_device *dev;
-	struct resource *res;
 
 	/* stop netdevice */
 	dev = platform_get_drvdata(pdev);
 	priv = netdev_priv(dev);
 	unregister_netdev(dev);
 
-	/* release device resources */
-	iounmap(priv->base);
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	release_mem_region(res->start, resource_size(res));
-
 	clk_disable_unprepare(priv->mac_clk);
-	clk_put(priv->mac_clk);
 
 	free_netdev(dev);
 	return 0;