linux-kernel - Re: [PATCH v6 0/3] Support power resources defined in acpi on ata

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Message-ID: <aQ2zI9tIb5asD16k@ryzen>
Date: Fri, 7 Nov 2025 09:51:47 +0100
From: Niklas Cassel <cassel@...nel.org>
To: Markus Probst <markus.probst@...teo.de>
Cc: Damien Le Moal <dlemoal@...nel.org>,
	"James E.J. Bottomley" <James.Bottomley@...senpartnership.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	linux-ide@...r.kernel.org, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 0/3] Support power resources defined in acpi on ata

On Tue, Nov 04, 2025 at 02:24:31PM +0000, Markus Probst wrote:
> This series adds support for power resources defined in acpi on ata
> ports/devices. A device can define a power resource in an ata port/device,
> which then gets powered on right before the port is probed. This can be
> useful for devices, which have sata power connectors that are:
>   a: powered down by default
>   b: can be individually powered on
> like in some synology nas devices. If thats the case it will be assumed,
> that the power resource won't survive reboots and therefore the disk will
> be stopped.

(snip)

> Markus Probst (3):
>   scsi: sd: Add manage_restart device attribute to scsi_disk
>   ata: Use ACPI methods to power on disks
>   ata: stop disk on restart if ACPI power resources are found
> 
>  drivers/ata/libata-acpi.c  | 67 ++++++++++++++++++++++++++++++++++++++
>  drivers/ata/libata-core.c  |  2 ++
>  drivers/ata/libata-scsi.c  |  1 +
>  drivers/ata/libata.h       |  4 +++
>  drivers/scsi/sd.c          | 34 ++++++++++++++++++-
>  include/scsi/scsi_device.h |  6 ++++
>  6 files changed, 113 insertions(+), 1 deletion(-)

Martin, James,

Please have a look.

If you have no comments, is it okay to take this via the libata tree,
or do you prefer to merge the series via the scsi tree?


Kind regards,
Niklas