smc911x Driver Disables Receiving After FIFO Overrun

Hi,
  The problem is with smc911x.c driver from 2.6.18.2 kernel running on
arm9 having a smsc 9117/9115 device.
   At high xfer rates, when there is rx overrun the driver just disables
rx(using SMC_SET_MAC_CR), it doesn't reenable it, and the driver stops
working.
   I have tried to fix this problem by reenable rx, but I don't know
where exactly to do it. 
   If anyone has worked on smsc, please suggest.
  
Thanks
Syed

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