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ACPI / cpuidle: avoid assigning signed errno to acpi_status 

It's incorrect to assign a signed value to an unsigned acpi_status
variable. This patch fixes it by using a signed integer to return
error values.

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Sudeep Holla 2014-11-25 14:48:50 +00:00 committed by Rafael J. Wysocki
parent bccac16eea
commit 6fd8050a35
1 changed files with 7 additions and 7 deletions
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14
drivers/acpi/processor_idle.c
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@ -334,10 +334,10 @@ static int acpi_processor_get_power_info_default(struct acpi_processor *pr)
static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
{
acpi_status status = 0;
acpi_status status;
u64 count;
int current_count;
int i;
int i, ret = 0;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *cst;
@ -358,7 +358,7 @@ static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
/* There must be at least 2 elements */
if (!cst || (cst->type != ACPI_TYPE_PACKAGE) || cst->package.count < 2) {
printk(KERN_ERR PREFIX "not enough elements in _CST\n");
status = -EFAULT;
ret = -EFAULT;
goto end;
}
@ -367,7 +367,7 @@ static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
/* Validate number of power states. */
if (count < 1 || count != cst->package.count - 1) {
printk(KERN_ERR PREFIX "count given by _CST is not valid\n");
status = -EFAULT;
ret = -EFAULT;
goto end;
}
@ -489,12 +489,12 @@ static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
/* Validate number of power states discovered */
if (current_count < 2)
status = -EFAULT;
ret = -EFAULT;
end:
kfree(buffer.pointer);
return status;
return ret;
}
static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
@ -1111,7 +1111,7 @@ static int acpi_processor_registered;
int acpi_processor_power_init(struct acpi_processor *pr)
{
acpi_status status = 0;
acpi_status status;
int retval;
struct cpuidle_device *dev;
static int first_run;