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dev_pm_ops.thaw() is called in following cases: * normal case: after hibernation image has been created. * error case 1: creation of a hibernation image has failed. * error case 2: restoration from a hibernation image has failed. For normal case, it is called mainly for resume storage devices for saving the hibernation image. Other devices that are not involved in the image saving do not need to resume the device. But since there's no api to know which case thaw() is called, device drivers can't conditionally resume device in thaw(). The new pm_hibernate_is_recovering() is such a api to query if thaw() is called in normal case. Signed-off-by: Samuel Zhang <guoqing.zhang@amd.com> Acked-by: Rafael J. Wysocki <rafael@kernel.org> Link: https://lore.kernel.org/r/20250710062313.3226149-5-guoqing.zhang@amd.com Signed-off-by: Mario Limonciello <mario.limonciello@amd.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.