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authorFelix Fietkau <nbd@openwrt.org>2016-01-01 18:57:29 +0000
committerFelix Fietkau <nbd@openwrt.org>2016-01-01 18:57:29 +0000
commit46519964ffdd8d917271496c9bd54a1d884fe5f2 (patch)
tree0364a4a6a1236ef89c22d5bfd76087afec8f8c32 /target/linux/generic/patches-4.4
parent22693a9086e57c758cc9ef73499c3e4b274b7d01 (diff)
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kernel: fold of_get_mac_address_mtd into of_get_mac_address
This makes it easier to keep drivers in sync with upstream Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 48026
Diffstat (limited to 'target/linux/generic/patches-4.4')
-rw-r--r--target/linux/generic/patches-4.4/681-NET-add-of_get_mac_address_mtd.patch85
1 files changed, 56 insertions, 29 deletions
diff --git a/target/linux/generic/patches-4.4/681-NET-add-of_get_mac_address_mtd.patch b/target/linux/generic/patches-4.4/681-NET-add-of_get_mac_address_mtd.patch
index 688cf6e44a..0026f12c9e 100644
--- a/target/linux/generic/patches-4.4/681-NET-add-of_get_mac_address_mtd.patch
+++ b/target/linux/generic/patches-4.4/681-NET-add-of_get_mac_address_mtd.patch
@@ -1,6 +1,6 @@
From: John Crispin <blogic@openwrt.org>
Date: Sun, 27 Jul 2014 09:40:01 +0100
-Subject: NET: add of_get_mac_address_mtd()
+Subject: NET: add mtd-mac-address support to of_get_mac_address()
Many embedded devices have information such as mac addresses stored inside mtd
devices. This patch allows us to add a property inside a node describing a
@@ -8,6 +8,7 @@ network interface. The new property points at a mtd partition with an offset
where the mac address can be found.
Signed-off-by: John Crispin <blogic@openwrt.org>
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
drivers/of/of_net.c | 37 +++++++++++++++++++++++++++++++++++++
include/linux/of_net.h | 1 +
@@ -23,15 +24,15 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
/**
* of_get_phy_mode - Get phy mode for given device_node
-@@ -80,3 +81,45 @@ const void *of_get_mac_address(struct de
- return of_get_mac_addr(np, "address");
+@@ -47,6 +48,66 @@ static const void *of_get_mac_addr(struc
+ return NULL;
}
- EXPORT_SYMBOL(of_get_mac_address);
-+
-+#ifdef CONFIG_MTD
-+int of_get_mac_address_mtd(struct device_node *np, unsigned char *mac)
+
++static const void *of_get_mac_address_mtd(struct device_node *np)
+{
++#ifdef CONFIG_MTD
+ struct device_node *mtd_np = NULL;
++ struct property *prop;
+ size_t retlen;
+ int size, ret;
+ struct mtd_info *mtd;
@@ -39,17 +40,18 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ const __be32 *list;
+ phandle phandle;
+ u32 mac_inc = 0;
++ u8 mac[ETH_ALEN];
+
+ list = of_get_property(np, "mtd-mac-address", &size);
+ if (!list || (size != (2 * sizeof(*list))))
-+ return -ENOENT;
++ return NULL;
+
+ phandle = be32_to_cpup(list++);
+ if (phandle)
+ mtd_np = of_find_node_by_phandle(phandle);
+
+ if (!mtd_np)
-+ return -ENOENT;
++ return NULL;
+
+ part = of_get_property(mtd_np, "label", NULL);
+ if (!part)
@@ -57,7 +59,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+
+ mtd = get_mtd_device_nm(part);
+ if (IS_ERR(mtd))
-+ return PTR_ERR(mtd);
++ return NULL;
+
+ ret = mtd_read(mtd, be32_to_cpup(list), 6, &retlen, mac);
+ put_mtd_device(mtd);
@@ -65,24 +67,49 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ if (!of_property_read_u32(np, "mtd-mac-address-increment", &mac_inc))
+ mac[5] += mac_inc;
+
-+ return ret;
-+}
-+EXPORT_SYMBOL_GPL(of_get_mac_address_mtd);
++ if (!is_valid_ether_addr(mac))
++ return NULL;
++
++ prop = kzalloc(sizeof(*prop), GFP_KERNEL);
++ if (!prop)
++ return NULL;
++
++ prop->name = "mac-address";
++ prop->length = ETH_ALEN;
++ prop->value = kmemdup(mac, ETH_ALEN, GFP_KERNEL);
++ if (!prop->value || of_add_property(np, prop))
++ goto free;
++
++ return prop->value;
++free:
++ kfree(prop->value);
++ kfree(prop);
+#endif
---- a/include/linux/of_net.h
-+++ b/include/linux/of_net.h
-@@ -13,6 +13,14 @@
- struct net_device;
- extern int of_get_phy_mode(struct device_node *np);
- extern const void *of_get_mac_address(struct device_node *np);
-+#ifdef CONFIG_MTD
-+extern int of_get_mac_address_mtd(struct device_node *np, unsigned char *mac);
-+#else
-+static inline int of_get_mac_address_mtd(struct device_node *np, unsigned char *mac)
-+{
-+ return -ENOENT;
++ return NULL;
+}
-+#endif
- extern struct net_device *of_find_net_device_by_node(struct device_node *np);
- #else
- static inline int of_get_phy_mode(struct device_node *np)
++
+ /**
+ * Search the device tree for the best MAC address to use. 'mac-address' is
+ * checked first, because that is supposed to contain to "most recent" MAC
+@@ -64,6 +125,9 @@ static const void *of_get_mac_addr(struc
+ * addresses. Some older U-Boots only initialized 'local-mac-address'. In
+ * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists
+ * but is all zeros.
++ *
++ * If a mtd-mac-address property exists, try to fetch the MAC address from the
++ * specified mtd device, and store it as a 'mac-address' property
+ */
+ const void *of_get_mac_address(struct device_node *np)
+ {
+@@ -77,6 +141,10 @@ const void *of_get_mac_address(struct de
+ if (addr)
+ return addr;
+
+- return of_get_mac_addr(np, "address");
++ addr = of_get_mac_addr(np, "address");
++ if (addr)
++ return addr;
++
++ return of_get_mac_address_mtd(np);
+ }
+ EXPORT_SYMBOL(of_get_mac_address);