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| author | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2013-08-30 12:30:51 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-09-24 01:40:38 +0200 |
| commit | bf9b59f2571d0d0470f904842a283ac7957438cd (patch) | |
| tree | 3da513d38db75493787ce21828604769b3ae2e03 /drivers/acpi/processor_idle.c | |
| parent | 1bb25df0fde2cdb2f250a7e7e43c2ec1ba65d0f5 (diff) | |
| download | lwn-bf9b59f2571d0d0470f904842a283ac7957438cd.tar.gz lwn-bf9b59f2571d0d0470f904842a283ac7957438cd.zip | |
ACPI / processor: remove superfluous pr == NULL checks
The only acpi_processor_get_power_info_fadt() user
(acpi_processor_get_power_info()) dereferences pr before calling
the function.
The only acpi_processor_hotplug() user (acpi_cpu_soft_notify())
checks for pr == NULL before calling the function.
The only acpi_processor_cst_has_changed() user (acpi_processor_notify())
checks for pr == NULL before calling the function.
The only acpi_processor_power_init() user (__acpi_processor_start())
dereferences pr before calling the function.
Thus remove superfluous pr == NULL checks from affected functions.
Also:
While at it remove redundant brackets from acpi_processor_hotplug().
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/processor_idle.c')
| -rw-r--r-- | drivers/acpi/processor_idle.c | 15 |
1 files changed, 1 insertions, 14 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index f98dd00b51a9..35c8f2bbcc40 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -272,9 +272,6 @@ static void tsc_check_state(int state) { return; } static int acpi_processor_get_power_info_fadt(struct acpi_processor *pr) { - if (!pr) - return -EINVAL; - if (!pr->pblk) return -ENODEV; @@ -1076,12 +1073,8 @@ int acpi_processor_hotplug(struct acpi_processor *pr) if (disabled_by_idle_boot_param()) return 0; - if (!pr) - return -EINVAL; - - if (nocst) { + if (nocst) return -ENODEV; - } if (!pr->flags.power_setup_done) return -ENODEV; @@ -1108,9 +1101,6 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr) if (disabled_by_idle_boot_param()) return 0; - if (!pr) - return -EINVAL; - if (nocst) return -ENODEV; @@ -1183,9 +1173,6 @@ int acpi_processor_power_init(struct acpi_processor *pr) first_run++; } - if (!pr) - return -EINVAL; - if (acpi_gbl_FADT.cst_control && !nocst) { status = acpi_os_write_port(acpi_gbl_FADT.smi_command, acpi_gbl_FADT.cst_control, 8); |