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Commit 549f4604 authored by Bob Moore's avatar Bob Moore Committed by Len Brown
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ACPICA: Fixed a problem with AcpiGetDevices where the search of a branch of... 


ACPICA: Fixed a problem with AcpiGetDevices where the search of a branch of the device tree could be terminated prematurely

In accordance with the ACPI specification, the search is terminated
if a device is both not present and not functional (instead of
just not present.) Yakui Zhao.

Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
Signed-off-by: default avatarAlexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 8a2e71a8

drivers/acpi/namespace/nsxfeval.c

+8 −5
Original line number Original line Diff line number Diff line
@@ -467,10 +467,13 @@ acpi_ns_get_device_callback(acpi_handle obj_handle, 
		return (AE_CTRL_DEPTH);

		return (AE_CTRL_DEPTH);

	}

	}





	if (!(flags & ACPI_STA_DEVICE_PRESENT)) {

	if (!(flags & ACPI_STA_DEVICE_PRESENT) &&



	    !(flags & ACPI_STA_DEVICE_FUNCTIONING)) {

		/* Don't examine children of the device if not present */

		/*



		 * Don't examine the children of the device only when the

		 * device is neither present nor functional. See ACPI spec,

		 * description of _STA for more information.

		 */

		return (AE_CTRL_DEPTH);

		return (AE_CTRL_DEPTH);

	}

	}
@@ -539,7 +542,7 @@ acpi_ns_get_device_callback(acpi_handle obj_handle, 
 *              value is returned to the caller.

 *              value is returned to the caller.

 *

 *

 *              This is a wrapper for walk_namespace, but the callback performs

 *              This is a wrapper for walk_namespace, but the callback performs

 *              additional filtering. Please see acpi_get_device_callback.

 *              additional filtering. Please see acpi_ns_get_device_callback.

 *

 *

 ******************************************************************************/

 ******************************************************************************/