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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-01-28 11:06:42 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-01-28 11:06:42 -0800 |
| commit | 64a172d265643b345007ddaafcc523f6e5373b69 (patch) | |
| tree | 012cba95b06014e2a5d916ae3081401a0552077f | |
| parent | ef1dce990b06a3f5bf4f71100891686b5d3f7c7e (diff) | |
| parent | 606f42265d384b9149bfb953c5dfc6d4710fef4c (diff) | |
| download | linux-64a172d265643b345007ddaafcc523f6e5373b69.tar.bz2 | |
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fix from Catalin Marinas:
"Fix kernel panic on ACPI-based systems where CPU capacity description
is not currently handled"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: skip register_cpufreq_notifier on ACPI-based systems
| -rw-r--r-- | arch/arm64/kernel/topology.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/arm64/kernel/topology.c b/arch/arm64/kernel/topology.c index 23e9e13bd2aa..655e65f38f31 100644 --- a/arch/arm64/kernel/topology.c +++ b/arch/arm64/kernel/topology.c @@ -11,6 +11,7 @@ * for more details. */ +#include <linux/acpi.h> #include <linux/cpu.h> #include <linux/cpumask.h> #include <linux/init.h> @@ -209,7 +210,12 @@ static struct notifier_block init_cpu_capacity_notifier = { static int __init register_cpufreq_notifier(void) { - if (cap_parsing_failed) + /* + * on ACPI-based systems we need to use the default cpu capacity + * until we have the necessary code to parse the cpu capacity, so + * skip registering cpufreq notifier. + */ + if (!acpi_disabled || cap_parsing_failed) return -EINVAL; if (!alloc_cpumask_var(&cpus_to_visit, GFP_KERNEL)) { |