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Date:   Sat, 14 Jan 2023 12:44:36 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To:     andersson@kernel.org, bp@alien8.de, mchehab@kernel.org
Cc:     james.morse@arm.com, rric@kernel.org,
        linux-arm-msm@vger.kernel.org, linux-edac@vger.kernel.org,
        linux-kernel@vger.kernel.org, quic_saipraka@quicinc.com
Subject: Re: [PATCH v5 0/3] Fix crash when using Qcom LLCC/EDAC drivers
Message-ID: <20230114071436.GC6992@thinkpad>
References: <20221129071201.30024-1-manivannan.sadhasivam@linaro.org>
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On Tue, Nov 29, 2022 at 12:41:58PM +0530, Manivannan Sadhasivam wrote:
> Hello,
> 
> This series fixes the crash seen on the Qualcomm SM8450 chipset with the
> LLCC/EDAC drivers. The problem was due to the Qcom EDAC driver using the
> fixed LLCC register offsets for detecting the LLCC errors.
> 
> This seems to have worked for SoCs till SM8450. But in SM8450, the LLCC
> register offsets were changed. So accessing the fixed offsets causes the
> crash on this platform.
> 
> So for fixing this issue, and also to make it work on future SoCs, let's
> pass the LLCC offsets from the Qcom LLCC driver based on the individual
> SoCs and let the EDAC driver make use of them.
> 
> This series has been tested on SM8450 based dev board.
> 

Ping! Since there is another LLCC/EDAC series under review, it would be good to
merge both into a single tree (which is qcom one I believe).

Thanks,
Mani

> Thanks,
> Mani
> 
> Changes in v5:
> 
> * Added fixes tag and CCed stable mentioning the dependency
> * Added a patch to fix the build error with COMPILE_TEST
> 
> Changes in v4:
> 
> * Dropped the patches that were already applied
> * Rebased on top of v6.1-rc5
> 
> Changes in v3:
> 
> * Instead of using SoC specific register offset naming convention, used
>   LLCC version based as suggested by Sai
> * Fixed the existing reg_offset naming convention to clearly represent
>   the LLCC version from which the offsets were changed
> * Added Sai's Acked-by to MAINTAINERS patch
> * Added a new patch that removes an extra error no assignment
> 
> Changes in v2:
> 
> * Volunteered myself as a maintainer for the EDAC driver since the current
>   maintainers have left Qualcomm and I couldn't get hold of them.
> 
> Manivannan Sadhasivam (3):
>   soc: qcom: Select REMAP_MMIO for LLCC driver
>   EDAC/qcom: Remove extra error no assignment in qcom_llcc_core_setup()
>   EDAC/qcom: Get rid of hardcoded register offsets
> 
>  drivers/edac/qcom_edac.c           | 119 ++++++++++++++---------------
>  drivers/soc/qcom/Kconfig           |   1 +
>  include/linux/soc/qcom/llcc-qcom.h |   6 --
>  3 files changed, 60 insertions(+), 66 deletions(-)
> 
> -- 
> 2.25.1
> 

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