iwn crashes in current (r282269)

Sat May 2 07:02:47 UTC 2015

May  2 01:01:34 critter kernel: iwn0: device timeout
May  2 01:01:34 critter kernel: firmware: 'iwn6000g2afw' version 0: 677296 bytes loaded at 0xffffffff81f880c0
May  2 01:01:34 critter kernel: iwn0: iwn_read_firmware: ucode rev=0x12a80601
May  2 01:01:40 critter kernel: iwn0: iwn_tx_data: m=0xfffff80236fe8500: seqno (9550) (78) != ring index (0) !
May  2 01:01:40 critter kernel: iwn0: iwn_intr: fatal firmware error
May  2 01:01:40 critter kernel: iwn0: iwn_panicked: controller panicked, iv_state = 5; resetting...
May  2 01:01:40 critter kernel: firmware: 'iwn6000g2afw' version 0: 677296 bytes loaded at 0xffffffff81f880c0
May  2 01:01:40 critter kernel: iwn0: iwn_read_firmware: ucode rev=0x12a80601

And then the machine hung.

No further details, as the screen-blanker was on.

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