github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-07 22:14:04 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

ACPI / processor: Fix the return value of acpi_processor_ids_walk()

Browse Source 
[ Upstream commit d0381bf4f8 ]

ACPI driver should make sure all the processor IDs in their ACPI Namespace
are unique. the driver performs a depth-first walk of the namespace tree
and calls the acpi_processor_ids_walk() to check the duplicate IDs.

But, the acpi_processor_ids_walk() mistakes the return value. If a
processor is checked, it returns true which causes the walk break
immediately, and other processors will never be checked.

Repace the value with AE_OK which is the standard acpi_status value.
And don't abort the namespace walk even on error.

Fixes: 8c8cb30f49 (acpi/processor: Implement DEVICE operator for processor enumeration)
Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dou Liyang 2018-08-24 10:51:26 +08:00 committed by Greg Kroah-Hartman
parent ec25ba4480
commit 7b7706258e
1 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/acpi/acpi_processor.c
View File

@ -643,7 +643,7 @@ static acpi_status __init acpi_processor_ids_walk(acpi_handle handle,
status = acpi_get_type(handle, &acpi_type);
if (ACPI_FAILURE(status))
return false;
return status;
switch (acpi_type) {
case ACPI_TYPE_PROCESSOR:
@ -663,11 +663,12 @@ static acpi_status __init acpi_processor_ids_walk(acpi_handle handle,
}
processor_validated_ids_update(uid);
return true;
return AE_OK;
err:
/* Exit on error, but don't abort the namespace walk */
acpi_handle_info(handle, "Invalid processor object\n");
return false;
return AE_OK;
}