[PATCH v1 6/8] perf: qcom_l2_pmu: Refactor _UID handling to use acpi_dev_uid_to_integer()

[Andy Shevchenko]

ACPI utils provide acpi_dev_uid_to_integer() helper to extract _UID as
an integer. Use it instead of custom approach.

Signed-off-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>
---
 drivers/perf/qcom_l2_pmu.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/perf/qcom_l2_pmu.c b/drivers/perf/qcom_l2_pmu.c
index 30234c261b05..aa68e230e020 100644
--- a/drivers/perf/qcom_l2_pmu.c
+++ b/drivers/perf/qcom_l2_pmu.c
@@ -843,13 +843,14 @@ static int l2_cache_pmu_probe_cluster(struct device *dev, void *data)
 	struct acpi_device *adev = ACPI_COMPANION(dev);
 	struct l2cache_pmu *l2cache_pmu = data;
 	struct cluster_pmu *cluster;
-	unsigned long fw_cluster_id;
+	u64 fw_cluster_id;
 	int err;
 	int irq;
 
-	if (!adev || kstrtoul(adev->pnp.unique_id, 10, &fw_cluster_id) < 0) {
+	err = acpi_dev_uid_to_integer(adev, &fw_cluster_id);
+	if (err) {
 		dev_err(&pdev->dev, "unable to read ACPI uid\n");
-		return -ENODEV;
+		return err;
 	}
 
 	cluster = devm_kzalloc(&pdev->dev, sizeof(*cluster), GFP_KERNEL);
-- 
2.35.1