On 25/10/19 10:23 PM, keerthy wrote:
> 
> 
> On 10/25/2019 5:35 PM, Tom Rini wrote:
>> On Tue, Aug 06, 2019 at 04:08:31PM +0530, Keerthy wrote:
>>
>>> In case of multiple eth interfaces currently eth_get_dev
>>> fetches the device based on the probe order which can be
>>> random hence try with the alias.
>>>
>>> Signed-off-by: Keerthy <[email protected]>
>>> ---
>>>   net/eth-uclass.c | 4 ++--
>>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/net/eth-uclass.c b/net/eth-uclass.c
>>> index 031d558625..f11c307b8c 100644
>>> --- a/net/eth-uclass.c
>>> +++ b/net/eth-uclass.c
>>> @@ -68,8 +68,8 @@ struct udevice *eth_get_dev(void)
>>>         uc_priv = eth_get_uclass_priv();
>>>       if (!uc_priv->current)
>>> -        eth_errno = uclass_first_device(UCLASS_ETH,
>>> -                    &uc_priv->current);
>>> +        eth_errno = uclass_get_device_by_seq(UCLASS_ETH,
>>> +                             0, &uc_priv->current);
>>>       return uc_priv->current;
>>>   }
>>
>> This breaks networking on qemu_arm / qemu_arm64 and no networking device
>> is found.
> 
> Okay. That is pretty strange. So seems like uclass_get_device_by_seq is 
> failing
> for some reason.

because not everyone populates aliases. You can do something like below:

        eth_errno = uclass_get_device_by_seq(UCLASS_ETH, 0, &uc_priv->current);
        if (eth_errno || !uc_priv->current)
                 eth_errno = uclass_first_device(UCLASS_ETH, &uc_priv->current);


Thanks and regards,
Lokesh

> 
>>
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