mirror of
https://github.com/hardkernel/linux.git
synced 2026-06-04 02:02:28 +09:00
6d27975851
The dep_unmet field in struct acpi_device is used to store the number of unresolved _DEP dependencies (that is, operation region dependencies for which there are no drivers present) for the ACPI device object represented by it. That field is initialized to 1 for all ACPI device objects in acpi_add_single_object(), via acpi_init_device_object(), so as to avoid evaluating _STA prematurely for battery device objects in acpi_scan_init_status(), and it is "fixed up" in acpi_bus_check_add() after the acpi_add_single_object() called by it has returned. This is not particularly straightforward and causes dep_unmet to remain 1 for device objects without dependencies created by invoking acpi_add_single_object() directly, outside acpi_bus_check_add(). For this reason, rearrange acpi_add_single_object() to initialize dep_unmet completely before calling acpi_scan_init_status(), which requires passing one extra bool argument to it, and update all of its callers accordingly. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com>
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 Restructured Text 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.