Received-SPF: pass (google.com: domain of linux-wireless-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Subject: Re: 5.14 rc6 broken for QCA6390 on Dell XPS 13 9310
To:     Kalle Valo <kvalo@codeaurora.org>,
        Wren Turkal <wt@penguintechs.org>
Cc:     ath11k@lists.infradead.org, linux-wireless@vger.kernel.org,
        regressions@lists.linux.dev,
        Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>,
        Hemant Kumar <hemantk@codeaurora.org>,
        Loic Poulain <loic.poulain@linaro.org>
References: <a8cddf24-ecfc-088e-27f4-98cbbb5fb67c@penguintechs.org>
 <87y28sqq4l.fsf@codeaurora.org>
From:   Nicolas Schichan <nschichan@freebox.fr>
Message-ID: <843e7689-fa1e-441b-c49a-ed7291046d5f@freebox.fr>
Date:   Mon, 23 Aug 2021 18:02:33 +0200
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101
 Thunderbird/78.11.0
MIME-Version: 1.0
In-Reply-To: <87y28sqq4l.fsf@codeaurora.org>
Content-Type: text/plain; charset=utf-8
Content-Language: en-US
Content-Transfer-Encoding: 8bit
Precedence: bulk

On 23/08/2021 14:53, Kalle Valo wrote:
> (adding linux-wireless, regressions and some mhi folks)
> 
> Wren Turkal <wt@penguintechs.org> writes:
> 
>> I have no device for the wifi on my computer. 5.13 worked pretty well.
>> I also found others reporting similar issues:
>> https://forum.manjaro.org/t/kernel5-14-rc6-ath11k-on-qca6390-regression-mhi-probe-failure/79362
>>
>> Here's info about the hardware on my laptop:
>> ➜  ~ sudo dmidecode -s system-product-name
>> XPS 13 9310
>>
>> ➜  ~ sudo dmidecode -s bios-version
>> 3.0.4
> 
> Do you get the same mhi error as in the forum post?
> 
> qcom_mhi_qrtr: probe of mhi0_IPCR failed with error -22
> 
> MHI folks, any ideas? I have XPS 13 9310 myself but I'm not able to test
> v5.14-rc6 kernel right now.

Hello,

I have hit the same issue on Linux 5.14-rc7:

[   14.780566] qcom_mhi_qrtr: probe of mhi0_IPCR failed with error -22

This looks to be caused by commit:

ce78ffa3ef16 net: really fix the build...

Reverting this commit results in ath11k being able to load without errors.

Regards,

-- 
Nicolas Schichan