[BUG] 3com/3c59x: two possible sleep-in-atomic bugs

[Jia-Ju Bai]

According to drivers/net/ethernet/3com/3c59x.c, the kernel module may 
sleep in the interrupt handler.
The function call paths are:
boomerang_interrupt (interrupt handler)
  vortex_error
    vortex_up
      pci_set_power_state --> may sleep
      pci_enable_device --> may sleep

vortex_interrupt (interrupt handler)
  vortex_error
    vortex_up
      pci_set_power_state --> may sleep
      pci_enable_device --> may sleep

I do not find a good way to fix them, so I only report.
These possible bugs are found by my static analysis tool (DSAC) and 
checked by my code review.


Thanks,
Jia-Ju Bai