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net: ks8851: Make ks8851_read_selftest() return void

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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@lunn.ch>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nathan Chancellor 2021-06-03 09:56:13 -07:00 committed by David S. Miller
parent a10541f5d9
commit 819fb78f69
1 changed files with 4 additions and 11 deletions
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15
drivers/net/ethernet/micrel/ks8851_common.c
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@ -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 */