ath11k/mhi backtraces on shutdown with linux-next

[Dmitry Baryshkov]

Hello,

On Sat, 12 Dec 2020 at 08:11, Kalle Valo <kvalo at codeaurora.org> wrote:
>
> Dmitry Baryshkov <dmitry.baryshkov at linaro.org> writes:
>
> > Hello,
> >
> > I've noticed the following backtrace during shutdown stage when
> > rebooting RB5 board,
> > using linux-next/master:
> >
> > [   31.060483] ath11k_pci 0000:01:00.0: shutdown
> > [   31.067844] ------------[ cut here ]------------
> > [   31.073111] WARNING: CPU: 4 PID: 101 at
> > drivers/iommu/io-pgtable-arm.c:583 __arm_lpae_unmap+0x39c/0x550
>
> Do you have CONFIG_DMA_API_DEBUG disabled? There is one commit fixing a
> DMA API debug warning but that should be in linux-next already:
>
> cd6181ff7e93 ath11k: dp_rx: fix monitor status dma unmap direction

I have enabled CONFIG_DMA_API_DEBUG (and _SG too). Got no additional
traces during boot and the same trace during reboot.

-- 
With best wishes
Dmitry