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| author | David S. Miller <davem@davemloft.net> | 2021-04-13 14:35:02 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-04-13 14:35:02 -0700 |
| commit | affb05d9109cbde23862691f7c8f0db4f8015c4e (patch) | |
| tree | f557abaef6b3106f623c47cdf0285fb87acaeb8d /include/linux | |
| parent | 40b5d2f15c091fa9c854acde91ad2acb504027d7 (diff) | |
| parent | f10843e04a075202dbb39dfcee047e3a2fdf5a8d (diff) | |
| download | cachepc-linux-affb05d9109cbde23862691f7c8f0db4f8015c4e.tar.gz cachepc-linux-affb05d9109cbde23862691f7c8f0db4f8015c4e.zip | |
Merge branch 'non-platform-devices-of_get_mac_address'
Michael Walle says:
====================
of: net: support non-platform devices in of_get_mac_address()
of_get_mac_address() is commonly used to fetch the MAC address
from the device tree. It also supports reading it from a NVMEM
provider. But the latter is only possible for platform devices,
because only platform devices are searched for a matching device
node.
Add a second method to fetch the NVMEM cell by a device tree node
instead of a "struct device".
Moreover, the NVMEM subsystem will return dynamically allocated
data which has to be freed after use. Currently, this is handled
by allocating a device resource manged buffer to store the MAC
address. of_get_mac_address() then returns a pointer to this
buffer. Without a device, this trick is not possible anymore.
Thus, change the of_get_mac_address() API to have the caller
supply a buffer.
It was considered to use the network device to attach the buffer
to, but then the order matters and netdev_register() has to be
called before of_get_mac_address(). No driver does it this way.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/of_net.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/of_net.h b/include/linux/of_net.h index 71bbfcf3adcd..daef3b0d9270 100644 --- a/include/linux/of_net.h +++ b/include/linux/of_net.h @@ -13,7 +13,7 @@ struct net_device; extern int of_get_phy_mode(struct device_node *np, phy_interface_t *interface); -extern const void *of_get_mac_address(struct device_node *np); +extern int of_get_mac_address(struct device_node *np, u8 *mac); 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, @@ -22,9 +22,9 @@ static inline int of_get_phy_mode(struct device_node *np, return -ENODEV; } -static inline const void *of_get_mac_address(struct device_node *np) +static inline int of_get_mac_address(struct device_node *np, u8 *mac) { - return ERR_PTR(-ENODEV); + return -ENODEV; } static inline struct net_device *of_find_net_device_by_node(struct device_node *np) |