netdev - Re: [PATCH wireless-drivers 0/2] fix mt76x2e hangs on U7612E mini-pcie

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Date:   Thu, 24 Oct 2019 08:19:06 +0200
From:   Oleksandr Natalenko <oleksandr@...alenko.name>
To:     Lorenzo Bianconi <lorenzo@...nel.org>
Cc:     kvalo@...eaurora.org, linux-wireless@...r.kernel.org, nbd@....name,
        sgruszka@...hat.com, lorenzo.bianconi@...hat.com,
        netdev@...r.kernel.org
Subject: Re: [PATCH wireless-drivers 0/2] fix mt76x2e hangs on U7612E
 mini-pcie

Hi.

On 24.10.2019 00:23, Lorenzo Bianconi wrote:
> Various mt76x2e issues have been reported on U7612E mini-pcie card [1].
> On U7612E-H1 PCIE_ASPM causes continuous mcu hangs and instability and
> so patch 1/2 disable it by default.
> Moreover mt76 does not properly unmap dma buffers for non-linear skbs.
> This issue may result in hw hangs if the system relies on IOMMU.
> Patch 2/2 fix the problem properly unmapping data fragments on
> non-linear skbs.
> 
> [1]:
> https://lore.kernel.org/netdev/deaafa7a3e9ea2111ebb5106430849c6@natalenko.name/
> 
> Lorenzo Bianconi (2):
>   mt76: mt76x2e: disable pcie_aspm by default
>   mt76: dma: fix buffer unmap with non-linear skbs
> 
>  drivers/net/wireless/mediatek/mt76/dma.c      | 10 ++--
>  drivers/net/wireless/mediatek/mt76/mmio.c     | 47 +++++++++++++++++++
>  drivers/net/wireless/mediatek/mt76/mt76.h     |  1 +
>  .../net/wireless/mediatek/mt76/mt76x2/pci.c   |  2 +
>  4 files changed, 57 insertions(+), 3 deletions(-)

Feel free to add my

Reported-by: Oleksandr Natalenko <oleksandr@...alenko.name>
Tested-by: Oleksandr Natalenko <oleksandr@...alenko.name>

and thanks for the submission.

-- 
   Oleksandr Natalenko (post-factum)