em loses link after IPMI reset

[Andrey Zonov]

Hi,

I have a few boxes with Intel 82574L NIC that run under 8.2-STABLE.  
After execution `ipmitool mc reset cold' NIC loses link and after 
negotiation it sets 100TX media type (normal is 1000T).  Under Linux on 
the same box this problem doesn't occur, after BMC reset driver doesn't 
lose link.

It seems that em driver sets (or doesn't set) some IPMI relied 
registers.  In Linux there is some magic about 82574/82583 chips and 
IPMI [1].  What do you think this is a solution for my problem or this 
is about something else?


[1] 
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=blob;f=drivers/net/ethernet/intel/e1000e/netdev.c;h=3911401ed65d59ceafe9b28080a6630f4adf6371;hb=HEAD#l2696

-- 
Andrey Zonov