ath5k grep

[   32.663149] ath5k 0000:00:06.0: enabling device (0000 -> 0002)
[   32.663196] ath5k 0000:00:06.0: can't find IRQ for PCI INT A; please try using pci=biosirq
[   32.667369] ath5k 0000:00:06.0: registered as 'phy0'
[   32.667380] ath5k phy0: request_irq failed
[   32.667419] ath5k: probe of 0000:00:06.0 failed with error -16