On Wed, Jul 18, 2018 at 06:10:35PM +0200, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>
>
> MTD doesn't support nvmem yet. Some platforms use MTD to read the MAC
> address from SPI flash. If we want this function to generalize reading
> the MAC address, we need to separately try to use MTD.
>
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>
> ---
> net/ethernet/eth.c | 20 ++++++++++++++++++++
> 1 file changed, 20 insertions(+)
>
> diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c
> index adf5bd03851f..f7dbd2cff7f9 100644
> --- a/net/ethernet/eth.c
> +++ b/net/ethernet/eth.c
> @@ -55,6 +55,7 @@
> #include <linux/of_net.h>
> #include <linux/pci.h>
> #include <linux/nvmem-consumer.h>
> +#include <linux/mtd/mtd.h>
> #include <net/dst.h>
> #include <net/arp.h>
> #include <net/sock.h>
> @@ -573,6 +574,25 @@ int eth_platform_get_mac_address(struct device *dev, u8 *mac_addr)
> }
> }
>
> +#ifdef CONFIG_MTD
> + /* NOTE: this should go away as soon as MTD gets nvmem support. */
> + if (!addr) {
> + struct mtd_info *mtd;
> + int rv;
> +
> + mtd = get_mtd_device_nm("MAC-Address");
In order for this to go away, you need to keep backwards
compatibility. When using nvmem, you look for a cell called
"mac-address". Here you are looking for "MAC-Address". That is going
to make backwards compatibility harder. How do you plan to do it?
Andrew
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