When HWP (Hardware P-states) is disabled, dynamic SST features are
disabled. But user should still be able to read the current core-power
state, with legacy P-states. This will allow users to read current
configuration with static SST enabled from BIOS.
To address this, do not call disable_dynamic_sst_features() when the
request is for reading the state.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Link: https://lore.kernel.org/r/20240229002659.1416623-1-srinivas.pandruvada@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
struct tpmi_per_power_domain_info *power_domain_info;
struct isst_core_power core_power;
- if (disable_dynamic_sst_features())
+ if (copy_from_user(&core_power, argp, sizeof(core_power)))
return -EFAULT;
- if (copy_from_user(&core_power, argp, sizeof(core_power)))
+ if (core_power.get_set && disable_dynamic_sst_features())
return -EFAULT;
power_domain_info = get_instance(core_power.socket_id, core_power.power_domain_id);