linux-kernel - Re: [PATCH 2/2] Power on ata ports defined in ACPI before probing ports

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Message-ID: <aOPbLlvbfFadVQsV@ryzen>
Date: Mon, 6 Oct 2025 17:07:26 +0200
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 2/2] Power on ata ports defined in ACPI before probing
 ports

On Sun, Oct 05, 2025 at 07:06:07PM +0000, Markus Probst wrote:
> some devices (for example every synology nas with "deep sleep" support)

Some devices?
I assume you mean the HBA and not the devices connected to the HBA.

> have the ability to power on and off each ata port individually. This
> turns the specific port on, if power manageable in acpi, before probing
> it.
> 
> This can later be extended to power down the ata ports (removing power
> from a disk) while the disk is spin down.

Spun down?

Overall this commit message needs some serious improvement.

I have no idea what Synology NAS with "deep sleep" support is.

We don't add support for vendor specific features.

Please reference the proper ATA ACS / AHCI / SATA / ACPI specification,
including the version of said specification and which section in that
specification.

Kind regards,
Niklas