This is a note to let you know that I've just added the patch titled
ACPI: processor: Return an error if acpi_processor_get_info() fails in processor_add()
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
acpi-processor-return-an-error-if-acpi_processor_get.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit e5ea3baa9c4df3ce81560098c7eca7bcb4adb550
Author: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Date: Wed May 29 14:34:31 2024 +0100
ACPI: processor: Return an error if acpi_processor_get_info() fails in processor_add()
[ Upstream commit fadf231f0a06a6748a7fc4a2c29ac9ef7bca6bfd ]
Rafael observed [1] that returning 0 from processor_add() will result in
acpi_default_enumeration() being called which will attempt to create a
platform device, but that makes little sense when the processor is known
to be not available. So just return the error code from acpi_processor_get_info()
instead.
Link: https://lore.kernel.org/all/CAJZ5v0iKU8ra9jR+EmgxbuNm=Uwx2m1-8vn_RAZ+aCiUVLe3Pw@xxxxxxxxxxxxxx/ [1]
Suggested-by: Rafael J. Wysocki <rafael@xxxxxxxxxx>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Reviewed-by: Gavin Shan <gshan@xxxxxxxxxx>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240529133446.28446-5-Jonathan.Cameron@xxxxxxxxxx
Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index 2c4dda0787e8..ffa10cb4f717 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -388,7 +388,7 @@ static int acpi_processor_add(struct acpi_device *device,
result = acpi_processor_get_info(device);
if (result) /* Processor is not physically present or unavailable */
- return 0;
+ return result;
BUG_ON(pr->id >= nr_cpu_ids);
