[PATCH v2 02/29] ACPI / PPTT: Stop acpi_count_levels() expecting callers to clear levels

[Jonathan Cameron]

On Wed, 10 Sep 2025 20:42:42 +0000
James Morse <james.morse at arm.com> wrote:

> In acpi_count_levels(), the initial value of *levels passed by the
> caller is really an implementation detail of acpi_count_levels(), so it
> is unreasonable to expect the callers of this function to know what to
> pass in for this parameter.  The only sensible initial value is 0,
> which is what the only upstream caller (acpi_get_cache_info()) passes.
> 
> Use a local variable for the starting cache level in acpi_count_levels(),
> and pass the result back to the caller via the function return value.
> 
> Gid rid of the levels parameter, which has no remaining purpose.
> 
> Fix acpi_get_cache_info() to match.
> 
> Suggested-by: Jonathan Cameron <jonathan.cameron at huawei.com>
> Signed-off-by: James Morse <james.morse at arm.com>
> Reviewed-by: Lorenzo Pieralisi <lpieralisi at kernel.org>
Reviewed-by: Jonathan Cameron <jonathan.cameron at huawei.com>