If acpi_cppc_processor_probe() had not executed successfully (for example, if _CPC object was not found) then cpc_desc_ptr for that processor will be invalid.
Signed-off-by: Boris Ostrovsky <[email protected]> --- drivers/acpi/cppc_acpi.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c index d0d0504..5bba26e 100644 --- a/drivers/acpi/cppc_acpi.c +++ b/drivers/acpi/cppc_acpi.c @@ -824,6 +824,8 @@ void acpi_cppc_processor_exit(struct acpi_processor *pr) void __iomem *addr; cpc_ptr = per_cpu(cpc_desc_ptr, pr->id); + if (!cpc_ptr) + return; /* Free all the mapped sys mem areas for this CPU */ for (i = 2; i < cpc_ptr->num_entries; i++) { -- 1.8.3.1
