linux-kernel - [PATCH -next 1/3] clk: sprd: composite: Fix unsigned comparison with less than zero

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Message-Id: <20230614012913.122220-1-yang.lee@linux.alibaba.com>
Date:   Wed, 14 Jun 2023 09:29:11 +0800
From:   Yang Li <yang.lee@...ux.alibaba.com>
To:     sboyd@...nel.org
Cc:     mturquette@...libre.com, orsonzhai@...il.com,
        baolin.wang@...ux.alibaba.com, zhang.lyra@...il.com,
        pdeschrijver@...dia.com, pgaikwad@...dia.com,
        thierry.reding@...il.com, jonathanh@...dia.com,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        Yang Li <yang.lee@...ux.alibaba.com>,
        Abaci Robot <abaci@...ux.alibaba.com>
Subject: [PATCH -next 1/3] clk: sprd: composite: Fix unsigned comparison with less than zero

The return value of the sprd_div_helper_round_rate() is long.
However, the return value is being assigned to an unsigned
long variable 'rate', so making 'rate' to long.

silence the warning:
./drivers/clk/sprd/composite.c:20:5-9: WARNING: Unsigned expression
compared with zero: rate < 0

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5519
Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>
---
 drivers/clk/sprd/composite.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/sprd/composite.c b/drivers/clk/sprd/composite.c
index d3a852720c07..e4d22d8f113f 100644
--- a/drivers/clk/sprd/composite.c
+++ b/drivers/clk/sprd/composite.c
@@ -13,7 +13,7 @@ static int sprd_comp_determine_rate(struct clk_hw *hw,
 				    struct clk_rate_request *req)
 {
 	struct sprd_comp *cc = hw_to_sprd_comp(hw);
-	unsigned long rate;
+	long rate;
 
 	rate = sprd_div_helper_round_rate(&cc->common, &cc->div,
 					  req->rate, &req->best_parent_rate);
-- 
2.20.1.7.g153144c