On 01/03/2023 22:56, Besar Wicaksono wrote:
Fix following compiler warning message
| smatch warnings:
| drivers/perf/arm_cspmu/arm_cspmu.c:1075 arm_cspmu_find_cpu_container()
| warn: variable dereferenced before check 'cpu_dev' (see line 1073)
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Reported-by: Dan Carpenter <error27@xxxxxxxxx>
Link: https://lore.kernel.org/r/202302191227.kc0V8fM7-lkp@xxxxxxxxx/
Signed-off-by: Besar Wicaksono <bwicaksono@xxxxxxxxxx>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
---
drivers/perf/arm_cspmu/arm_cspmu.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/perf/arm_cspmu/arm_cspmu.c b/drivers/perf/arm_cspmu/arm_cspmu.c
index e31302ab7e37..a3f1c410b417 100644
--- a/drivers/perf/arm_cspmu/arm_cspmu.c
+++ b/drivers/perf/arm_cspmu/arm_cspmu.c
@@ -1078,12 +1078,14 @@ static int arm_cspmu_request_irq(struct arm_cspmu *cspmu)
static inline int arm_cspmu_find_cpu_container(int cpu, u32 container_uid)
{
u32 acpi_uid;
- struct device *cpu_dev = get_cpu_device(cpu);
- struct acpi_device *acpi_dev = ACPI_COMPANION(cpu_dev);
+ struct device *cpu_dev;
+ struct acpi_device *acpi_dev;
+ cpu_dev = get_cpu_device(cpu);
if (!cpu_dev)
return -ENODEV;
+ acpi_dev = ACPI_COMPANION(cpu_dev);
while (acpi_dev) {
if (!strcmp(acpi_device_hid(acpi_dev),
ACPI_PROCESSOR_CONTAINER_HID) &&
base-commit: 7f7a8831520f12a3cf894b0627641fad33971221
