John Que wrote:
>  I had noticed that the zd1211 driver does call request_irq() in 
> zd1205_open(),
> file zd1205.c; 

Look at it in context:

#ifndef HOST_IF_USB     
        if ((rc = request_irq(dev->irq, &zd1205_intr, SA_SHIRQ, dev->name, 
dev)) != 0) {
                printk(KERN_ERR "zd1205: failed to request_irq\n");     

The ZD1211 vendor driver appears to be an adapted version of another 
ZyDAS driver which supports a PCI wifi chip, presumably there are some 
similarities. There are many such headaches when trying to read through 
this driver...

request_irq never happens because HOST_IF_USB gets defined.

Daniel



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