[PATCH] net: stmmac: manage errors returned by of_get_mac_address()

David Miller davem at davemloft.net
Mon Jul 29 10:57:31 PDT 2019


From: Martin Blumenstingl <martin.blumenstingl at googlemail.com>
Date: Sat, 27 Jul 2019 21:21:37 +0200

> Commit d01f449c008a ("of_net: add NVMEM support to of_get_mac_address")
> added support for reading the MAC address from an nvmem-cell. This
> required changing the logic to return an error pointer upon failure.
> 
> If stmmac is loaded before the nvmem provider driver then
> of_get_mac_address() return an error pointer with -EPROBE_DEFER.
> 
> Propagate this error so the stmmac driver will be probed again after the
> nvmem provider driver is loaded.
> Default to a random generated MAC address in case of any other error,
> instead of using the error pointer as MAC address.
> 
> Fixes: d01f449c008a ("of_net: add NVMEM support to of_get_mac_address")
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl at googlemail.com>

Applied, thanks.



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