[U-Boot] smc911x: problem with if there is ethernet traffic

[Raffaele Recalcati]

I've customized the commit f67066b6b0740b826ed862615c5ab022aaf4779a
for my pxa255/smx911x (lan9118) board.
tftp works nice, also through a switch, but only if I'm not connected
to the LAN.

=> tftp a2000000 uImage
smc911x: detected LAN9118 controller
smc911x: phy initialized .. BSR=0x782D
smc911x: phy initialized .. PHY special control status=0x1058
smc911x: MAC 00:03:50:00:a7:c5
Using smc911x-0 device
TFTP from server 10.39.10.114; our IP address is 10.39.10.183
Filename 'uImage'.
Load address: 0xa2000000
Loading: #################################################################
         #################################################################
         #################################################################
         ##################################
done
Bytes transferred = 1170516 (11dc54 hex)

If I'm connected to the LAN of my company I have many timeout problems.

=> tftp a2000000 uImage
smc911x: detected LAN9118 controller
smc911x: phy initialized .. BSR=0x782D
smc911x: phy initialized .. PHY special control status=0x1058
smc911x: MAC 00:03:50:00:a7:c5
Using smc911x-0 device
TFTP from server 10.39.10.114; our IP address is 10.39.10.183
Filename 'uImage'.
Load address: 0xa2000000
Loading: #####################################T ############################
         ##############################T #T ##################################
         ###invalid RARP header
T ##T ###T ############################################T #############
         ##################################
done
Bytes transferred = 1170516 (11dc54 hex)

No IP duplication, I have verified it!