diff options
author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2024-02-26 19:40:52 +0300 |
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committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2024-02-27 19:54:59 +0300 |
commit | 1b4f02a34f095b96de36fa16755f5598ba380939 (patch) | |
tree | 72733ca7c3c494c0a93f3b905c03174ed4665466 /drivers/acpi/scan.c | |
parent | 514bcabc05387369ee491b8359f34fcd45f25f55 (diff) | |
download | linux-1b4f02a34f095b96de36fa16755f5598ba380939.tar.xz |
ACPI: scan: Make acpi_processor_add() check the device enabled bit
Modify acpi_processor_add() return an error if _STA returns the enabled
bit clear for the given processor device, so as to avoid using processors
that don't decode their resources, as per the ACPI specification. [1]
Link: https://uefi.org/specs/ACPI/6.5/06_Device_Configuration.html#sta-device-status # [1]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/acpi/scan.c')
-rw-r--r-- | drivers/acpi/scan.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index e641a7c87358..fddcb1691fd3 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1945,6 +1945,11 @@ bool acpi_device_is_present(const struct acpi_device *adev) return adev->status.present || adev->status.functional; } +bool acpi_device_is_enabled(const struct acpi_device *adev) +{ + return adev->status.present && adev->status.enabled; +} + static bool acpi_scan_handler_matching(struct acpi_scan_handler *handler, const char *idstr, const struct acpi_device_id **matchid) |