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8c59fc1c90
Some embedded devices have the ability to control whether power is provided to the disks via the SATA power connector or not. ACPI power resources are usually off by default, thus making it unclear if the specific power resource will retain its state after a restart. If power resources are defined on ATA ports / devices in ACPI, we should stop the disk on SYSTEM_RESTART, to ensure the disk will not lose power while active. Add a new function, ata_acpi_dev_manage_restart(), that will be used to determine if a disk should be stopped before restarting the system. If a usable ACPI power resource has been found, it is assumed that the disk will lose power after a restart and should be stopped to avoid unclean shutdown due to power loss. Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Signed-off-by: Markus Probst <markus.probst@posteo.de> Link: https://patch.msgid.link/20251104142413.322347-4-markus.probst@posteo.de Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.