linux-kernel - [PATCH v1 6/8] perf: qcom_l2_pmu: Refactor _UID handling to use acpi_dev_uid_to

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Date:   Wed,  7 Sep 2022 19:46:04 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Hans de Goede <hdegoede@...hat.com>,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-efi@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-spi@...r.kernel.org,
        devel@...ica.org
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>, Ard Biesheuvel <ardb@...nel.org>,
        Elie Morisse <syniurge@...il.com>,
        Nehal Shah <nehal-bakulchandra.shah@....com>,
        Shyam Sundar S K <shyam-sundar.s-k@....com>,
        Khalil Blaiech <kblaiech@...dia.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Will Deacon <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Daniel Mack <daniel@...que.org>,
        Haojian Zhuang <haojian.zhuang@...il.com>,
        Robert Jarzmik <robert.jarzmik@...e.fr>,
        Mark Brown <broonie@...nel.org>,
        Robert Moore <robert.moore@...el.com>,
        Wolfram Sang <wsa@...nel.org>
Subject: [PATCH v1 6/8] perf: qcom_l2_pmu: Refactor _UID handling to use acpi_dev_uid_to_integer()

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@...ux.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