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ACPI: processor idle: Use swap() instead of open coding it

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Address the following coccicheck warning:

./drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c:914:40-41:
WARNING opportunity for swap().

by using swap() for the swapping of variable values and drop
the tmp variable that is not needed any more.

Signed-off-by: Guo Zhengkui <guozhengkui@vivo.com>
[ rjw: Subject and changelog rewrite ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Guo Zhengkui 2021-11-09 15:50:51 +08:00 committed by Rafael J. Wysocki
parent 6fd13452c1
commit 0e6078c3c6
1 changed files with 2 additions and 4 deletions
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6
drivers/acpi/processor_idle.c
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@ -20,6 +20,7 @@
#include <linux/tick.h> #include <linux/tick.h>
#include <linux/cpuidle.h> #include <linux/cpuidle.h>
#include <linux/cpu.h> #include <linux/cpu.h>
#include <linux/minmax.h>
#include <acpi/processor.h> #include <acpi/processor.h>
/* /*
@ -400,13 +401,10 @@ static int acpi_cst_latency_cmp(const void *a, const void *b)
static void acpi_cst_latency_swap(void *a, void *b, int n) static void acpi_cst_latency_swap(void *a, void *b, int n)
{ {
struct acpi_processor_cx *x = a, *y = b; struct acpi_processor_cx *x = a, *y = b;
u32 tmp;
if (!(x->valid && y->valid)) if (!(x->valid && y->valid))
return; return;
tmp = x->latency; swap(x->latency, y->latency);
x->latency = y->latency;
y->latency = tmp;
} }
static int acpi_processor_power_verify(struct acpi_processor *pr) static int acpi_processor_power_verify(struct acpi_processor *pr)