: ACPI: Rename ACPI processor device bus ID
PATCH 1/1 : ACPI: Rename ACPI processor device bus ID
On some boxes several processors use the same processor bus id. But they are located in different scope. For example:
\_SB.SCK0.CPU0 \_SB.SCK1.CPU0
This follows the ACPI spec.
As they use the same bus id, it can't be registered when
registering proc I/F. It causes that the ACPI processor driver can't be bound with the processor device.
Rename the processor device bus id. And the new bus id will be generated as the following format:
CPU+ CPU ID
For example: If the cpu ID is 5, then the bus ID will be "CPU5".
If the CPU ID is 10, then the bus ID will be "CPUA".
--- drivers/acpi/processor_core.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)
drivers/acpi/processor_core.c +10 -1
@@ -649,7 +649,16 @@return -ENODEV ; } } - +/* +* On some boxes several processors use the same processor bus id. +* But they are located in different scope. For example: +* \_SB.SCK0.CPU0 +* \_SB.SCK1.CPU0 +* Rename the processor device bus id. And the new bus id will be +* generated as the following format: +* CPU+CPU ID. +*/ +sprintf (acpi_device_bid (device),"CPU%X" , pr->id);ACPI_DEBUG_PRINT ((ACPI_DB_INFO ,"Processor [%d:%d]\n" , pr->id, pr->acpi_id));
Quoted 10 lines · yakui_zhao
On some boxes several processors use the same processor bus id. But they are located in different scope. For example:
\_SB.SCK0.CPU0 \_SB.SCK1.CPU0This follows the ACPI spec.
As they use the same bus id, it can't be registered when
registering proc I/F. It causes that the ACPI processor driver can't be bound with the processor device.
Quoted 8 lines
Rename the processor device bus id. And the new bus id will be generated as the following format:
CPU+ CPU IDFor example: If the cpu ID is 5, then the bus ID will be "CPU5".
If the CPU ID is 10, then the bus ID will be "CPUA".
HI, Len
How about this patch?
After renaming the bus id, it will be similar with the CPU sys I/F. Of course the difference is that the decimal mode is used in CPU sys I/F. And in my patch the hex mode is used.
Quoted 33 lines
Signed-off-by Zhao Yakui <[email protected]>--- drivers/acpi/processor_core.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)Index:
linux-2.6/drivers/acpi/processor_core.c
===================================================================drivers/acpi/processor_core.c +10
-2@@ -649,7 +649,16 @@return -ENODEV ; } } - +/* +* On some boxes several processors use the same processor bus id. +* But they are located in different scope. For example: +* \_SB.SCK0.CPU0 +* \_SB.SCK1.CPU0 +* Rename the processor device bus id. And the new bus id will be +* generated as the following format: +* CPU+CPU ID. +*/ +sprintf (acpi_device_bid (device),"CPU%X" , pr->id);ACPI_DEBUG_PRINT ((ACPI_DB_INFO ,"Processor [%d:%d]\n" , pr->id, pr->acpi_id)); --To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to [email protected]
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