Re: Patch breaks suspend

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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@xxxxxxxxx>
> 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@xxxxxxxxx>
>     Reviewed-by: Aaron Lu <aaron.lu@xxxxxxxxx>
>     Acked-by: Tejun Heo <tj@xxxxxxxxxx>
> 
> 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?


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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