linux-kernel - 回复: Bug: After a 'warm' reboot the disk is missing (not detected by the bios) on a HP t640

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Message-ID:
 <BL3PR16MB45707B929A4AF86D392297DC99702@BL3PR16MB4570.namprd16.prod.outlook.com>
Date: Fri, 19 Jan 2024 08:40:05 +0000
From: "Fred Ai(WH)" <fred.ai@...hubtech.com>
To: Ben Mesman | Spark Narrowcasting <ben@...rknarrowcasting.nl>, Sean
 Christopherson <seanjc@...gle.com>
CC: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>,
	"x86@...nel.org" <x86@...nel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, Ulf Hansson <ulf.hansson@...aro.org>, Adrian
 Hunter <adrian.hunter@...el.com>, "Chevron Li (WH)"
	<chevron.li@...hubtech.com>, "Shaper Liu (WH)" <shaper.liu@...hubtech.com>
Subject:
 回复: Bug: After a 'warm' reboot the disk is missing (not detected by the bios) on a HP t640

Hi Ben Mesman,
I changed the code by using "set_power" to recover clock source when power off card and provide the attachment code try to fix this issue, but I didn't test this path code. You can test attachment patch code and give the feedback to me.

BR,
Fred 
-----邮件原件-----
发件人: Ben Mesman | Spark Narrowcasting <ben@...rknarrowcasting.nl> 
发送时间: 2024年1月9日 20:26
收件人: Fred Ai(WH) <fred.ai@...hubtech.com>; Sean Christopherson <seanjc@...gle.com>
抄送: Thomas Gleixner <tglx@...utronix.de>; Ingo Molnar <mingo@...hat.com>; Borislav Petkov <bp@...en8.de>; Dave Hansen <dave.hansen@...ux.intel.com>; x86@...nel.org; linux-kernel@...r.kernel.org; Ulf Hansson <ulf.hansson@...aro.org>; Adrian Hunter <adrian.hunter@...el.com>; Chevron Li (WH) <chevron.li@...hubtech.com>; Shaper Liu (WH) <shaper.liu@...hubtech.com>
主题: Re: Bug: After a 'warm' reboot the disk is missing (not detected by the bios) on a HP t640

Hi Fred,

> Hi Ben Mesman,
> 
> > I tried the patch, but it didn't solve the issue, sorry.
> 
> > Do you need any extra info? Any other help I can give to solve this problem?
> 
> Please make sure you compile in a way that allows our patch to take effect, or you can add debugging information to ensure that our patch works.

I did a checkout (v6.1.70) and a compile (with the .config from debian) to check for the 'bad' situation. Then I did a 'make clean', patched the tree and did a new compile. I think that should have activated the patch.

Maybe the extra .remove_slot function is not executed (or only applicable for a newer kernel version?), but I don't know how to add debugging info, sorry.

Thanks,
Ben Mesman.

View attachment "sdhci-pci-o2micro.c" of type "text/plain" (27357 bytes)