linux-kernel - [PATCH] net/fsl: xgmac_mdio: use correct format characters

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Message-Id: <20220316213114.2352352-1-morbo@google.com>
Date:   Wed, 16 Mar 2022 14:31:14 -0700
From:   Bill Wendling <morbo@...gle.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tobias Waldekranz <tobias@...dekranz.com>,
        Marcin Wojtas <mw@...ihalf.com>, Andrew Lunn <andrew@...n.ch>,
        Bill Wendling <morbo@...gle.com>,
        Calvin Johnson <calvin.johnson@....nxp.com>,
        Markus Koch <markus@...syncing.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: [PATCH] net/fsl: xgmac_mdio: use correct format characters

When compiling with -Wformat, clang emits the following warning:

drivers/net/ethernet/freescale/xgmac_mdio.c:243:22: warning: format
specifies type 'unsigned char' but the argument has type 'int'
[-Wformat]
                        phy_id, dev_addr, regnum);
                                          ^~~~~~
./include/linux/dev_printk.h:163:47: note: expanded from macro 'dev_dbg'
                dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
                                                    ~~~     ^~~~~~~~~~~
./include/linux/dev_printk.h:129:34: note: expanded from macro 'dev_printk'
                _dev_printk(level, dev, fmt, ##__VA_ARGS__);            \
                                        ~~~    ^~~~~~~~~~~

The types of these arguments are unconditionally defined, so this patch
updates the format character to the correct ones for ints and unsigned
ints.

Link: ClangBuiltLinux/linux#378
Signed-off-by: Bill Wendling <morbo@...gle.com>
---
 drivers/net/ethernet/freescale/xgmac_mdio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/freescale/xgmac_mdio.c b/drivers/net/ethernet/freescale/xgmac_mdio.c
index 266e562bd67a..1d5d09d2eb41 100644
--- a/drivers/net/ethernet/freescale/xgmac_mdio.c
+++ b/drivers/net/ethernet/freescale/xgmac_mdio.c
@@ -239,7 +239,7 @@ static int xgmac_mdio_read(struct mii_bus *bus, int phy_id, int regnum)
 	if ((xgmac_read32(&regs->mdio_stat, endian) & MDIO_STAT_RD_ER) &&
 	    !priv->has_a011043) {
 		dev_dbg(&bus->dev,
-			"Error while reading PHY%d reg at %d.%hhu\n",
+			"Error while reading PHY%d reg at %d.%d\n",
 			phy_id, dev_addr, regnum);
 		ret = 0xffff;
 	} else {
-- 
2.35.1.723.g4982287a31-goog