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From:   Cristian Marussi <cristian.marussi@arm.com>
To:     linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-pm@vger.kernel.org
Cc:     sudeep.holla@arm.com, james.quinlan@broadcom.com,
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        daniel.lezcano@linaro.org, tarek.el-sherbiny@arm.com,
        adrian.slatineanu@arm.com, souvik.chakravarty@arm.com,
        wleavitt@marvell.com, wbartczak@marvell.com,
        dan.carpenter@oracle.com, lukasz.luba@arm.com
Subject: [PATCH v2 2/3] powercap: arm_scmi: Fix signedness bug in probe
Date:   Tue,  6 Sep 2022 15:23:36 +0100
Message-Id: <20220906142337.1697569-3-cristian.marussi@arm.com>
In-Reply-To: <20220906142337.1697569-1-cristian.marussi@arm.com>
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From: Dan Carpenter <dan.carpenter@oracle.com>

The "pr->num_zones" variable is an unsigned int so it can't be less than
zero.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 drivers/powercap/arm_scmi_powercap.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/powercap/arm_scmi_powercap.c b/drivers/powercap/arm_scmi_powercap.c
index a91438867f8c..76200c004cad 100644
--- a/drivers/powercap/arm_scmi_powercap.c
+++ b/drivers/powercap/arm_scmi_powercap.c
@@ -389,11 +389,12 @@ static int scmi_powercap_probe(struct scmi_device *sdev)
 	if (!pr)
 		return -ENOMEM;
 
-	pr->num_zones = powercap_ops->num_domains_get(ph);
-	if (pr->num_zones < 0) {
+	ret = powercap_ops->num_domains_get(ph);
+	if (ret < 0) {
 		dev_err(dev, "number of powercap domains not found\n");
-		return pr->num_zones;
+		return ret;
 	}
+	pr->num_zones = ret;
 
 	pr->spzones = devm_kcalloc(dev, pr->num_zones,
 				   sizeof(*pr->spzones), GFP_KERNEL);
-- 
2.32.0