linux-kernel - [PATCH] mtd: rawnand: pl353: Use int type to store negative error codes

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Message-Id: <20250830100637.14756-1-rongqianfeng@vivo.com>
Date: Sat, 30 Aug 2025 18:06:37 +0800
From: Qianfeng Rong <rongqianfeng@...o.com>
To: Miquel Raynal <miquel.raynal@...tlin.com>,
	Michal Simek <michal.simek@....com>,
	Richard Weinberger <richard@....at>,
	Vignesh Raghavendra <vigneshr@...com>,
	linux-mtd@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc: Qianfeng Rong <rongqianfeng@...o.com>
Subject: [PATCH] mtd: rawnand: pl353: Use int type to store negative error codes

Change the 'ret' variable from u32 to int in pl35x_nand_probe() to store
negative error codes or zero;

Storing the negative error codes in unsigned type, doesn't cause an issue
at runtime but can be confusing. Additionally, assigning negative error
codes to unsigned type may trigger a GCC warning when the -Wsign-conversion
flag is enabled.

No effect on runtime.

Signed-off-by: Qianfeng Rong <rongqianfeng@...o.com>
---
 drivers/mtd/nand/raw/pl35x-nand-controller.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/raw/pl35x-nand-controller.c b/drivers/mtd/nand/raw/pl35x-nand-controller.c
index 09440ed4652e..37e92b86bf26 100644
--- a/drivers/mtd/nand/raw/pl35x-nand-controller.c
+++ b/drivers/mtd/nand/raw/pl35x-nand-controller.c
@@ -1137,7 +1137,7 @@ static int pl35x_nand_probe(struct platform_device *pdev)
 	struct device *smc_dev = pdev->dev.parent;
 	struct amba_device *smc_amba = to_amba_device(smc_dev);
 	struct pl35x_nandc *nfc;
-	u32 ret;
+	int ret;
 
 	nfc = devm_kzalloc(&pdev->dev, sizeof(*nfc), GFP_KERNEL);
 	if (!nfc)
-- 
2.34.1