linux-kernel - Re: [PATCH] i2c: i2c-qcom-geni: Serve transfer during early resume stage

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]

Message-ID: <85b156c8-aef5-4080-bc4d-e1bb8a4f0977@quicinc.com>
Date: Fri, 27 Sep 2024 17:49:17 +0530
From: Mukesh Kumar Savaliya <quic_msavaliy@...cinc.com>
To: Andi Shyti <andi.shyti@...nel.org>
CC: <konrad.dybcio@...aro.org>, <andersson@...nel.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-i2c@...r.kernel.org>, <quic_vdadhani@...cinc.com>,
        <vkoul@...nel.org>
Subject: Re: [PATCH] i2c: i2c-qcom-geni: Serve transfer during early resume
 stage

Hi Andi, sorry. Yes this is active. let me push V2 addressing comments 
for V1. i was completely away earlier hence restarting now.

On 9/12/2024 3:32 PM, Andi Shyti wrote:
> Hi Mukesh,
> 
> Is this patch still needed? Can anyone active in the Qualcomm
> drivers take a look?
> 
> On Tue, Apr 02, 2024 at 03:57:41PM GMT, Mukesh Kumar Savaliya wrote:
>> pm_runtime_get_sync() function fails during PM early resume and returning
>> -EACCES because runtime PM for the device is disabled at the early stage
>> causing i2c transfer to fail. Make changes to serve transfer with force
>> resume.
>>
>> 1. Register interrupt with IRQF_EARLY_RESUME and IRQF_NO_SUSPEND flags
>>     to avoid timeout of transfer when IRQ is not enabled during early stage.
>> 2. Do force resume if pm_runtime_get_sync() is failing after system
>>     suspend when runtime PM is not enabled.
>> 3. Increment power usage count after forced resume to balance
>>     it against regular runtime suspend.
>>
>> Co-developed-by: Viken Dadhaniya <quic_vdadhani@...cinc.com>
>> Signed-off-by: Viken Dadhaniya <quic_vdadhani@...cinc.com>
>> Signed-off-by: Mukesh Kumar Savaliya <quic_msavaliy@...cinc.com>
> 
> Should this be considered a fix?
> 
> Thanks,
> Andi