[LEDE-DEV] ath9k crashes

[Felix Fietkau]

On 2017-01-30 14:50, Koen Vandeputte wrote:
> Hi Felix,
> 
> Since the latest ath9k fixes you've submitted I've seen a few NULL 
> derefs on my cns3xxx boards the past few days.
> 
> I'm not sure if these are really the cause but .. any idea?
> 
> [   42.570000] [<c0013528>] (_raw_spin_unlock_irqrestore) from [<bf4748b8>] (ath9k_iowrite32+0x5c/0x7c [ath9k])
> [   42.570000] [<bf47485c>] (ath9k_iowrite32 [ath9k]) from [<bf41757c>] (ath9k_hw_kill_interrupts+0x1a8/0x218 [ath9k_hw])
> [   42.570000]  r9:00000000 r8:00000000 r7:bf47485c r6:00000002 r5:00023f60 r4:ce878010
> [   42.570000] [<bf4174a0>] (ath9k_hw_kill_interrupts [ath9k_hw]) from [<bf417fdc>] (ath9k_hw_resume_interrupts+0x84/0x88 [ath9k_hw])
> [   42.570000]  r7:00000001 r6:00000001 r5:ce878010 r4:ce895540
> [   42.570000] [<bf417f90>] (ath9k_hw_resume_interrupts [ath9k_hw]) from [<bf418000>] (ath9k_hw_enable_interrupts+0x20/0x24 [ath9k_hw])
> [   42.570000] [<bf417fe0>] (ath9k_hw_enable_interrupts [ath9k_hw]) from [<bf477b04>] (ath9k_calculate_summary_state+0x3e8/0x5dc [ath9k])
> [   42.570000] [<bf4779d4>] (ath9k_calculate_summary_state [ath9k]) from [<bf477c90>] (ath9k_calculate_summary_state+0x574/0x5dc [ath9k])
> [   42.570000]  r7:ce895ef0 r6:ce895edc r5:ce895ee8 r4:ce895540
> [   42.570000] [<bf477b14>] (ath9k_calculate_summary_state [ath9k]) from [<bf477d74>] (ath_reset_work+0x28/0x34 [ath9k])
> 
> 
> Full log:
> 
> http://pastebin.com/raw/7s5tqy88
This does not look like a bug in ath9k to me. Seems that the cns3xxx
GPIO IRQ handler/setup code might be broken.

- Felix