diff options
| author | Zhang Rui <rui.zhang@intel.com> | 2020-10-13 15:42:40 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-10-16 17:35:36 +0200 |
| commit | 7a57e9f112adebc9e5dc787c2a59dbc06ae5060d (patch) | |
| tree | d91b5f49394fc6a1eb386b22ff917c16c70bc113 /drivers/powercap | |
| parent | 0b8417c14181595997091145342954332fa016cd (diff) | |
| download | linux-7a57e9f112adebc9e5dc787c2a59dbc06ae5060d.tar.gz linux-7a57e9f112adebc9e5dc787c2a59dbc06ae5060d.tar.bz2 linux-7a57e9f112adebc9e5dc787c2a59dbc06ae5060d.zip | |
powercap/intel_rapl: Fix domain detection
As only the low 32 bits of the RAPL_DOMAIN_REG_STATUS register
represents the energy counter, and the high 32 bits are reserved,
detect the existence of a RAPL domain by checking the low 32 bits only.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/powercap')
| -rw-r--r-- | drivers/powercap/intel_rapl_common.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/powercap/intel_rapl_common.c b/drivers/powercap/intel_rapl_common.c index 983d75bd5bd1..2651ea6cd6d3 100644 --- a/drivers/powercap/intel_rapl_common.c +++ b/drivers/powercap/intel_rapl_common.c @@ -1228,7 +1228,7 @@ static int rapl_check_domain(int cpu, int domain, struct rapl_package *rp) * values, otherwise skip it. */ - ra.mask = ~0; + ra.mask = ENERGY_STATUS_MASK; if (rp->priv->read_raw(cpu, &ra) || !ra.value) return -ENODEV; |