netdev - Re: [PATCH v4 2/8] clk: qcom: ipq5332: enable few nssnoc clocks in driver probe

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Sat, 17 Feb 2024 21:14:55 +0530
From: Kathiravan Thirumoorthy <quic_kathirav@...cinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
CC: Andrew Lunn <andrew@...n.ch>, Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Michael Turquette
	<mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, Rob Herring
	<robh+dt@...nel.org>,
        Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Richard Cochran <richardcochran@...il.com>,
        Catalin Marinas
	<catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-clk@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v4 2/8] clk: qcom: ipq5332: enable few nssnoc clocks in
 driver probe


<snip>

>> Reason being, to access the NSSCC clocks, these GCC clocks
>> (gcc_snoc_nssnoc_clk, gcc_snoc_nssnoc_1_clk, gcc_nssnoc_nsscc_clk)
>> should be turned ON. But CCF disables these clocks as well due to the
>> lack of consumer.
> 
> This means that NSSCC is also a consumer of those clocks. Please fix
> both DT and nsscc driver to handle NSSNOC clocks.


Thanks Dmitry. I shall include these clocks in the NSSCC DT node and 
enable the same in the NSSCC driver probe.

> 
>>> Once you have actual drivers, this should solve itself, the drivers
>>> will consume the clocks.
>>
>>
>> Given that, NSSCC is being built as module, there is no issue in booting
>> the kernel. But if you do insmod of the nsscc-ipq5332.ko, system will
>> reset.
>>
>> Without the networking drivers, there is no need to install this module.
>> And as you stated, once the drivers are available, there will be no issues.
>>
>> So can I explain the shortcomings of installing this module without the
>> networking drivers in cover letter and drop this patch all together?
> 
> No. Using allyesconfig or allmodconfig and installing the full modules
> set should work.
> 


Okay, Got it. Thanks for the information.

<snip>