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Date:   Fri, 25 Jun 2021 14:38:58 +0200
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Cc:     hemantk@codeaurora.org, bbhatt@codeaurora.org,
        linux-arm-msm@vger.kernel.org, jhugo@codeaurora.org,
        linux-kernel@vger.kernel.org, loic.poulain@linaro.org,
        kvalo@codeaurora.org, ath11k@lists.infradead.org,
        stable@vger.kernel.org, Jeffrey Hugo <quic_jhugo@quicinc.com>
Subject: Re: [PATCH 06/10] bus: mhi: core: Set BHI and BHIe pointers to NULL
 in clean-up
Message-ID: <YNXOYkj9TWZgYAG3@kroah.com>
References: <20210625123355.11578-1-manivannan.sadhasivam@linaro.org>
 <20210625123355.11578-7-manivannan.sadhasivam@linaro.org>
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On Fri, Jun 25, 2021 at 06:03:51PM +0530, Manivannan Sadhasivam wrote:
> From: Bhaumik Bhatt <bbhatt@codeaurora.org>
> 
> Set the BHI and BHIe pointers to NULL as part of clean-up. This
> makes sure that stale pointers are not accessed after powering
> MHI down.
> 
> Cc: stable@vger.kernel.org

Why is this needed for stable, but patch 5/10 is not?

And what commit does this fix?  How far back should it go?

And is this really fixing anything?

thanks,

greg k-h