Sure! I should have check it before sending v2 :( My bad, sorry. I see
now, that there is possible calltrace which can hit NULL defer.
I should be the one apologizing here. Sorry for the confusion.
One thing I am wondering about is why in some code parts there are
validation checks for es58x_dev->netdev[i] and in others they are missing.
There is a validation when it is accessed in a for loop.
It is not guarded in es58x_send_msg() because this function
expects the channel_idx to be a valid index.
Does this answer your wonders?