diff options
| author | Srinivas Pandruvada | 2023-10-04 11:19:15 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-10-25 12:03:15 +0200 |
| commit | 52d54f1d4e032204f2bf53fb04afb89d7f7ab6e5 (patch) | |
| tree | a085eae0f1db2ef09f036afe98b348e07fa4c9fe /drivers/platform | |
| parent | 8a4b575d00ef9051bf66ca3a564b86cd776e0595 (diff) | |
platform/x86: intel-uncore-freq: Conditionally create attribute for read frequency
commit 4d73c6772ab771cbbe7e46a73e7c78ba490350fa upstream.
When the current uncore frequency can't be read, don't create attribute
"current_freq_khz" as any read will fail later. Some user space
applications like turbostat fail to continue with the failure. So, check
error during attribute creation.
Fixes: 414eef27283a ("platform/x86/intel/uncore-freq: Display uncore current frequency")
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231004181915.1887913-1-srinivas.pandruvada@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c b/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c index fa8f14c925ec..9b12fe8e95c9 100644 --- a/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c +++ b/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c @@ -153,7 +153,7 @@ show_uncore_data(initial_max_freq_khz); static int create_attr_group(struct uncore_data *data, char *name) { - int ret, index = 0; + int ret, freq, index = 0; init_attribute_rw(max_freq_khz); init_attribute_rw(min_freq_khz); @@ -165,7 +165,11 @@ static int create_attr_group(struct uncore_data *data, char *name) data->uncore_attrs[index++] = &data->min_freq_khz_dev_attr.attr; data->uncore_attrs[index++] = &data->initial_min_freq_khz_dev_attr.attr; data->uncore_attrs[index++] = &data->initial_max_freq_khz_dev_attr.attr; - data->uncore_attrs[index++] = &data->current_freq_khz_dev_attr.attr; + + ret = uncore_read_freq(data, &freq); + if (!ret) + data->uncore_attrs[index++] = &data->current_freq_khz_dev_attr.attr; + data->uncore_attrs[index] = NULL; data->uncore_attr_group.name = name; |