Kernel Version is 2.6.15

At ep0_irq routine,the line 1543:

if(irq_src & UDC_EP0_RX){

................


L1543:if(!req || (stat=read_fifo(eq0,req))<0)

But i find the return value of read_fifo only would be 0 and 1.
then the latter condition is always wrong







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