From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001 From: James <> Date: Wed, 4 Nov 2015 11:49:21 +0000 Subject: trunk-47381 --- .../681-NET-add-of_get_mac_address_mtd.patch | 88 ++++++++++++++++++++++ 1 file changed, 88 insertions(+) create mode 100644 target/linux/generic/patches-4.3/681-NET-add-of_get_mac_address_mtd.patch (limited to 'target/linux/generic/patches-4.3/681-NET-add-of_get_mac_address_mtd.patch') diff --git a/target/linux/generic/patches-4.3/681-NET-add-of_get_mac_address_mtd.patch b/target/linux/generic/patches-4.3/681-NET-add-of_get_mac_address_mtd.patch new file mode 100644 index 0000000..688cf6e --- /dev/null +++ b/target/linux/generic/patches-4.3/681-NET-add-of_get_mac_address_mtd.patch @@ -0,0 +1,88 @@ +From: John Crispin +Date: Sun, 27 Jul 2014 09:40:01 +0100 +Subject: NET: add of_get_mac_address_mtd() + +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 +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 +--- + drivers/of/of_net.c | 37 +++++++++++++++++++++++++++++++++++++ + include/linux/of_net.h | 1 + + 2 files changed, 38 insertions(+) + +--- a/drivers/of/of_net.c ++++ b/drivers/of/of_net.c +@@ -10,6 +10,7 @@ + #include + #include + #include ++#include + + /** + * 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"); + } + EXPORT_SYMBOL(of_get_mac_address); ++ ++#ifdef CONFIG_MTD ++int of_get_mac_address_mtd(struct device_node *np, unsigned char *mac) ++{ ++ struct device_node *mtd_np = NULL; ++ size_t retlen; ++ int size, ret; ++ struct mtd_info *mtd; ++ const char *part; ++ const __be32 *list; ++ phandle phandle; ++ u32 mac_inc = 0; ++ ++ list = of_get_property(np, "mtd-mac-address", &size); ++ if (!list || (size != (2 * sizeof(*list)))) ++ return -ENOENT; ++ ++ phandle = be32_to_cpup(list++); ++ if (phandle) ++ mtd_np = of_find_node_by_phandle(phandle); ++ ++ if (!mtd_np) ++ return -ENOENT; ++ ++ part = of_get_property(mtd_np, "label", NULL); ++ if (!part) ++ part = mtd_np->name; ++ ++ mtd = get_mtd_device_nm(part); ++ if (IS_ERR(mtd)) ++ return PTR_ERR(mtd); ++ ++ ret = mtd_read(mtd, be32_to_cpup(list), 6, &retlen, mac); ++ put_mtd_device(mtd); ++ ++ 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); ++#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; ++} ++#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) -- cgit v1.2.3