[ath9k-devel] Atheros 9390 and AR_INTR_SYNC_HOST1_PERR

[Uwe Wojak <uwe.wojak@gmx.de>]

Am 07.12.2011 13:44, schrieb Mohammed Shafi:
> On Wed, Dec 7, 2011 at 5:29 PM, Mohammed Shafi<shafi.wireless@gmail.com>  wrote:
>> On Wed, Dec 7, 2011 at 5:14 PM, Mohammed Shafi<shafi.wireless@gmail.com>  wrote:
>>> On Wed, Dec 7, 2011 at 4:36 PM, Uwe Wojak<uwe.wojak@gmx.de>  wrote:
>>>> Hallo,
>>>>
>>>> we use a mini PCIe card (9390) with a miniPCe to PCIe adapter on a X86
>>>> system and a system with a Xilinix Microblaze CPU.
>>>> As the performance on the Microblaze is bad (ping times up to 10 sec),
>>>> we examined the interrupt service routine.
>>>>
>>>> On Microblaze *and* on X86 we see about 10 "spurious" interrupts per
>>>> second.
>>>> In this cases in ar9003_hw_get_isr (ar9003_mac.c) the sync_cause bit
>>>> "AR_INTR_SYNC_HOST1_PERR" is set.
>>>> The driver ignores this.
> please try with the attached patch in latest compat wireless and see if it helps
>
>
Hallo Mohammed,

thank you for your patch. After applying it the chip is reset when the error occurs (i added debug output),
but the error still appears about 10 times a second.

Do you know what "AR_INTR_SYNC_HOST1_PERR" means ?
I feel that there is something wrong with our miniPCIe Adapters or with the network card
(but i see the effect on two different ones from different vendors).

May there be some chip setup missing for 9390 ?

Thank you for your help
Uwe