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From:   Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
To:     pavel@ucw.cz
Cc:     lee@kernel.org, linux-leds@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        Jiapeng Chong <jiapeng.chong@linux.alibaba.com>,
        Abaci Robot <abaci@linux.alibaba.com>
Subject: [PATCH] leds: flash: leds-qcom-flash: Fix an unsigned comparison which can never be negative
Date:   Wed, 31 May 2023 13:35:59 +0800
Message-Id: <20230531053559.5702-1-jiapeng.chong@linux.alibaba.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

The variable 'count' is defined as unsigned type, so the following if
statement is invalid, we can modify the type of count to int.
if (count <= 0) {
	dev_err(dev, "No led-sources specified\n");
	return -ENODEV;
}

./drivers/leds/flash/leds-qcom-flash.c:546:5-10: WARNING: Unsigned expression compared with zero: count <= 0.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5344
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
---
 drivers/leds/flash/leds-qcom-flash.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/leds/flash/leds-qcom-flash.c b/drivers/leds/flash/leds-qcom-flash.c
index c8d41a3caf38..b089ca1a1901 100644
--- a/drivers/leds/flash/leds-qcom-flash.c
+++ b/drivers/leds/flash/leds-qcom-flash.c
@@ -538,9 +538,9 @@ static int qcom_flash_register_led_device(struct device *dev,
 	struct led_init_data init_data;
 	struct led_classdev_flash *flash = &led->flash;
 	struct led_flash_setting *brightness, *timeout;
-	u32 count, current_ua, timeout_us;
+	u32 current_ua, timeout_us;
 	u32 channels[4];
-	int i, rc;
+	int i, rc, count;
 
 	count = fwnode_property_count_u32(node, "led-sources");
 	if (count <= 0) {
-- 
2.20.1.7.g153144c