linux-kernel - [PATCH] mtd: rawnand: lpc32xx_mlc: fix irq handler prototype

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Message-Id: <20240213100146.455811-1-arnd@kernel.org>
Date: Tue, 13 Feb 2024 11:00:09 +0100
From: Arnd Bergmann <arnd@...nel.org>
To: Miquel Raynal <miquel.raynal@...tlin.com>,
	Vladimir Zapolskiy <vz@...ia.com>
Cc: Arnd Bergmann <arnd@...db.de>,
	Richard Weinberger <richard@....at>,
	Vignesh Raghavendra <vigneshr@...com>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
	Roland Stigge <stigge@...com.de>,
	David Woodhouse <David.Woodhouse@...el.com>,
	linux-mtd@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	llvm@...ts.linux.dev
Subject: [PATCH] mtd: rawnand: lpc32xx_mlc: fix irq handler prototype

From: Arnd Bergmann <arnd@...db.de>

clang-16 warns about mismatched function prototypes:

drivers/mtd/nand/raw/lpc32xx_mlc.c:783:29: error: cast from 'irqreturn_t (*)(int, struct lpc32xx_nand_host *)' (aka 'enum irqreturn (*)(int, struct lpc32xx_nand_host *)') to 'irq_handler_t' (aka 'enum irqreturn (*)(int, void *)') converts to incompatible function type [-Werror,-Wcast-function-type-strict]

Change the interrupt handler to the normal way of just passing
a void* pointer and converting it inside the function..

Fixes: 70f7cb78ec53 ("mtd: add LPC32xx MLC NAND driver")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/mtd/nand/raw/lpc32xx_mlc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/nand/raw/lpc32xx_mlc.c b/drivers/mtd/nand/raw/lpc32xx_mlc.c
index 488fd452611a..677fcb03f9be 100644
--- a/drivers/mtd/nand/raw/lpc32xx_mlc.c
+++ b/drivers/mtd/nand/raw/lpc32xx_mlc.c
@@ -303,8 +303,9 @@ static int lpc32xx_nand_device_ready(struct nand_chip *nand_chip)
 	return 0;
 }
 
-static irqreturn_t lpc3xxx_nand_irq(int irq, struct lpc32xx_nand_host *host)
+static irqreturn_t lpc3xxx_nand_irq(int irq, void *data)
 {
+	struct lpc32xx_nand_host *host = data;
 	uint8_t sr;
 
 	/* Clear interrupt flag by reading status */
@@ -780,7 +781,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
 		goto release_dma_chan;
 	}
 
-	if (request_irq(host->irq, (irq_handler_t)&lpc3xxx_nand_irq,
+	if (request_irq(host->irq, &lpc3xxx_nand_irq,
 			IRQF_TRIGGER_HIGH, DRV_NAME, host)) {
 		dev_err(&pdev->dev, "Error requesting NAND IRQ\n");
 		res = -ENXIO;
-- 
2.39.2