linux-kernel - Re: Patch breaks suspend

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Date:	Tue, 05 May 2015 11:38:50 +0300
From:	Marian Marinov <mm-l@...u.biz>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
CC:	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	Aaron Lu <aaron.lu@...el.com>
Subject: Re: Patch breaks suspend

On 05/05/2015 02:37 AM, Rafael J. Wysocki wrote:
> On Saturday, May 02, 2015 11:27:32 PM Marian Marinov wrote:
>> Hi guys,
>> I have Lenovo T520 with one SSD and one SATA drive.
>>
>> I tried to upgrade to Linux 4.0 and found that after suspend and resume I can't access the second (SATA) drive.
>> Both drives have bios encryption enabled.
>>
>> I did a bisect and found that the following patch causes the issue:
>> commit 5d5132059a1f652de9dc2d62a8ff15561e648d11
>> Author: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
>> Date:   Sat Feb 22 00:48:31 2014 +0100
>>
>>     ACPI / ATA: Add hotplug contexts to ACPI companions of SATA devices
>>    
>>     Modify the SATA subsystem to add hotplug contexts to ACPI companions
>>     of SATA devices and ports instead of registering special ACPI dock
>>     operations using register_hotplug_dock_device().
>>    
>>     That change will allow the entire code handling those special ACPI
>>     dock operations to be dropped in the next commit.
>>    
>>     Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
>>     Reviewed-by: Aaron Lu <aaron.lu@...el.com>
>>     Acked-by: Tejun Heo <tj@...nel.org>
>>
>> Unfortunately I do not understand this part of the code and have no idea what I can do.
>> Any pointers would be very appreciated.
> Well, not right from the top of my head, but this looks really suspicious to me.
>
> Can you please file a bug entry for this at bugzilla.kernel.org (in the ACPI/BIOS
> category), assign it to me and CC Aaron?
BUG created: https://bugzilla.kernel.org/show_bug.cgi?id=97731

Added you and Aaron to the CC list.

What additional info can I provide you? Would you like any debug info from the kernel it self?
Dmesg output?

Marian
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