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Power management fixes for 5.5-rc6

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Prevent the cpufreq-dt driver from probing Tegra20/30 (Dmitry Osipenko)
 and prevent the Intel RAPL power capping driver from crashing during
 CPU initialization due to a NULL pointer dereference if the processor
 model in use is not known to it (Harry Pan).
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Merge tag 'pm-5.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "Prevent the cpufreq-dt driver from probing Tegra20/30 (Dmitry
  Osipenko) and prevent the Intel RAPL power capping driver from
  crashing during CPU initialization due to a NULL pointer dereference
  if the processor model in use is not known to it (Harry Pan)"

* tag 'pm-5.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  powercap: intel_rapl: add NULL pointer check to rapl_mmio_cpu_online()
  cpufreq: dt-platdev: Blacklist NVIDIA Tegra20 and Tegra30 SoCs
This commit is contained in:
Linus Torvalds 2020-01-10 11:46:59 -08:00
commit c23e744b59
2 changed files with 5 additions and 0 deletions
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2
drivers/cpufreq/cpufreq-dt-platdev.c
View File

@ -121,6 +121,8 @@ static const struct of_device_id blacklist[] __initconst = {
{ .compatible = "mediatek,mt8176", },
{ .compatible = "mediatek,mt8183", },
{ .compatible = "nvidia,tegra20", },
{ .compatible = "nvidia,tegra30", },
{ .compatible = "nvidia,tegra124", },
{ .compatible = "nvidia,tegra210", },

3
drivers/powercap/intel_rapl_common.c
View File

@ -1295,6 +1295,9 @@ struct rapl_package *rapl_add_package(int cpu, struct rapl_if_priv *priv)
struct cpuinfo_x86 *c = &cpu_data(cpu);
int ret;
if (!rapl_defaults)
return ERR_PTR(-ENODEV);
rp = kzalloc(sizeof(struct rapl_package), GFP_KERNEL);
if (!rp)
return ERR_PTR(-ENOMEM);