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| author | Thomas Schlichter <thomas.schlichter@web.de> | 2015-03-31 20:24:39 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-04-03 13:18:25 +0200 |
| commit | c7e8bdf5872c5a8f5a6494e16fe839c38a0d3d3d (patch) | |
| tree | 6be691b1d7d85b449df55e69f765302de75d6cb3 | |
| parent | d75e4af14e228bbe3f86e29bcecb8e6be98d4e04 (diff) | |
| download | ibft-c7e8bdf5872c5a8f5a6494e16fe839c38a0d3d3d.tar.gz | |
cpuidle: ACPI: do not overwrite name and description of C0
Fix a bug that leads to showing the name and description of C-state C0
as "<null>" in sysfs after the ACPI C-states changed (e.g. after AC->DC
or DC->AC
transition).
The function poll_idle_init() in drivers/cpuidle/driver.c initializes the
state 0 during cpuidle_register_driver(), so we better do not overwrite it
again with '\0' during acpi_processor_cst_has_changed().
Signed-off-by: Thomas Schlichter <thomas.schlichter@web.de>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: 3.13+ <stable@vger.kernel.org> # 3.13+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/acpi/processor_idle.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index c6bb9f1257c928..f98db0b5055168 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -922,7 +922,7 @@ static int acpi_processor_setup_cpuidle_states(struct acpi_processor *pr) return -EINVAL; drv->safe_state_index = -1; - for (i = 0; i < CPUIDLE_STATE_MAX; i++) { + for (i = CPUIDLE_DRIVER_STATE_START; i < CPUIDLE_STATE_MAX; i++) { drv->states[i].name[0] = '\0'; drv->states[i].desc[0] = '\0'; } |