I found 2 bugs in several network drivers:

* dev->mem_start: NULL means "not command line configuration" 0xffffffff
means "default".
several drivers only check for NULL, not for 0xffffffff.

* incorrect bounds checks for phy_idx: 2 entries in the structure, but
up to 4 are initialized.

* something is wrong in the vortex initialization: I don't have such a
card, but the driver didn't return an error message on insmod. I'm not
sure if
my fix is correct.

Patch attached, against 2.4.1-ac12.

--
	Manfred