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arm,arm64,drivers: reduce scope of cap_parsing_failed

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Reduce the scope of cap_parsing_failed (making it static in
drivers/base/arch_topology.c) by slightly changing {arm,arm64} DT
parsing code.

For arm checking for !cap_parsing_failed before calling normalize_
cpu_capacity() is superfluous, as returning an error from parse_
cpu_capacity() (above) means cap_from _dt is set to false.

For arm64 we can simply check if raw_capacity points to something,
which is not if capacity parsing has failed.

Suggested-by: Morten Rasmussen <[email protected]>
Signed-off-by: Juri Lelli <[email protected]>
Acked-by: Russell King <[email protected]>
Acked-by: Catalin Marinas <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Juri Lelli 2017-05-31 17:59:29 +01:00 • committed by Greg Kroah-Hartman
commit c105aa3118
3 changed files with 4 additions and 8 deletions
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4
drivers/base/arch_topology.c
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@ -95,7 +95,7 @@ subsys_initcall(register_cpu_capacity_sysctl);
static u32 capacity_scale;
static u32 *raw_capacity;
bool cap_parsing_failed;
static bool cap_parsing_failed;
void normalize_cpu_capacity(void)
{
@ -210,7 +210,7 @@ static int __init register_cpufreq_notifier(void)
* until we have the necessary code to parse the cpu capacity, so
* skip registering cpufreq notifier.
*/
if (!acpi_disabled || cap_parsing_failed)
if (!acpi_disabled || !raw_capacity)
return -EINVAL;
if (!alloc_cpumask_var(&cpus_to_visit, GFP_KERNEL)) {