linux-kernel - [PATCH net-next] net: ks8851: Make ks8851_read

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Message-Id: <20210603165612.2088040-1-nathan@kernel.org>
Date:   Thu,  3 Jun 2021 09:56:13 -0700
From:   Nathan Chancellor <nathan@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com,
        Nathan Chancellor <nathan@...nel.org>
Subject: [PATCH net-next] net: ks8851: Make ks8851_read_selftest() return void

clang points out that ret in ks8851_read_selftest() is set but unused:

drivers/net/ethernet/micrel/ks8851_common.c:1028:6: warning: variable
'ret' set but not used [-Wunused-but-set-variable]
        int ret = 0;
            ^
1 warning generated.

The return code of this function has never been checked so just remove
ret and make the function return void.

Fixes: 3ba81f3ece3c ("net: Micrel KS8851 SPI network driver")
Suggested-by: Andrew Lunn <andrew@...n.ch>
Signed-off-by: Nathan Chancellor <nathan@...nel.org>
---
 drivers/net/ethernet/micrel/ks8851_common.c | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/micrel/ks8851_common.c b/drivers/net/ethernet/micrel/ks8851_common.c
index 13eef6e9bd2d..831518466de2 100644
--- a/drivers/net/ethernet/micrel/ks8851_common.c
+++ b/drivers/net/ethernet/micrel/ks8851_common.c
@@ -1022,30 +1022,23 @@ static int ks8851_mdio_write(struct mii_bus *bus, int phy_id, int reg, u16 val)
  *
  * Read and check the TX/RX memory selftest information.
  */
-static int ks8851_read_selftest(struct ks8851_net *ks)
+static void ks8851_read_selftest(struct ks8851_net *ks)
 {
 	unsigned both_done = MBIR_TXMBF | MBIR_RXMBF;
-	int ret = 0;
 	unsigned rd;
 
 	rd = ks8851_rdreg16(ks, KS_MBIR);
 
 	if ((rd & both_done) != both_done) {
 		netdev_warn(ks->netdev, "Memory selftest not finished\n");
-		return 0;
+		return;
 	}
 
-	if (rd & MBIR_TXMBFA) {
+	if (rd & MBIR_TXMBFA)
 		netdev_err(ks->netdev, "TX memory selftest fail\n");
-		ret |= 1;
-	}
 
-	if (rd & MBIR_RXMBFA) {
+	if (rd & MBIR_RXMBFA)
 		netdev_err(ks->netdev, "RX memory selftest fail\n");
-		ret |= 2;
-	}
-
-	return 0;
 }
 
 /* driver bus management functions */

base-commit: 270d47dc1fc4756a0158778084a236bc83c156d2
-- 
2.32.0.rc0