Re: [PATCH net-next v2 0/4] of_get_mac_address ERR_PTR fixes

[Leonard Crestez <leonard.crestez@nxp.com>]

On 07.05.2019 00:25, Petr Štetiar wrote:
> Hi,
> 
> this patch series is an attempt to fix the mess, I've somehow managed to
> introduce.
> 
> First patch in this series is defacto v5 of the previous 05/10 patch in the
> series, but since the v4 of this 05/10 patch wasn't picked up by the
> patchwork for some unknown reason, this patch wasn't applied with the other
> 9 patches in the series, so I'm resending it as a separate patch of this
> fixup series again.
> 
> Second patch is a result of this rebase against net-next tree, where I was
> checking again all current users of of_get_mac_address and found out, that
> there's new one in DSA, so I've converted this user to the new ERR_PTR
> encoded error value as well.
> 
> Third patch which was sent as v5 wasn't considered for merge, but I still
> think, that we need to check for possible NULL value, thus current IS_ERR
> check isn't sufficient and we need to use IS_ERR_OR_NULL instead.
> 
> Fourth patch fixes warning reported by kbuild test robot.
> 
> Cheers,
> 
> Petr
> 
> Petr Štetiar (4):
>    net: ethernet: support of_get_mac_address new ERR_PTR error
>    net: dsa: support of_get_mac_address new ERR_PTR error
>    staging: octeon-ethernet: Fix of_get_mac_address ERR_PTR check
>    net: usb: smsc: fix warning reported by kbuild test robot

>   drivers/net/ethernet/freescale/fec_main.c             | 2 +-

This fixes netboot on imx (probably all of them).

Tested-by: Leonard Crestez <leonard.crestez@nxp.com>

But shouldn't "support of_get_mac_address new ERR_PTR error" somehow be 
reordered so that it's done before allowing non-null errors from 
of_get_mac_address?

Otherwise it will break bisect for many people.

--
Regards,
Leonard