Io error

Adrian Chadd adrian at
Mon Aug 5 12:35:32 EDT 2013

Is this a QCA9880 v1 or v2?


On 5 August 2013 09:28, Qiu Siyu <ppqq2356 at> wrote:
> Dear Ms/Mr,
> I am now trying to flash the ath10k driver and its firmware into a wireless
> card on PC. The wireless card is removed from TP-Link Archer c7. However,
> the wifi does not work.
> When I type lspci -vv
> Informations about Network controller shows !!! Unknown type 7f. Of cause
> the version of my wireless card is v2(003c).
> Then I study the source code. Something unusual happens in
> ath10k_pci_diag_read_access(pci.c): in the first if statement which
> comparing address with DRAM_BASE_ADDRESS, I print out those two. They are
> 4008f8 and 400000, meaning that a temporary bounce buffer needs allocating
> to hold caller's data to be DMA'ed from Target. Though ath10k_ce_send
> succeeds, the next function- ath10k_ce_completed_send_next fails. I notice
> that this function will call ath10k_ce_completed_send_next_nolock and go on
> calling ath10k_cesrc_ting_read_index_get. Here error occurs. The returning
> from ath10k_cesrc_ting_read_index_get, which is the read_index is exactly
> 0xffffffff yielding an EBusy return. I find it is caused by ioread32, which
> return the 0xffffffff.
> Do you know why those things happen? Could you please help me fix them?
> Many thanks!
> regards,
> Siyu
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