diff options
| author | Nathan Chancellor <nathan@kernel.org> | 2021-06-27 11:45:43 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-06-28 15:50:21 -0700 |
| commit | b74ef9f9cb91fc86c642af965b7598c4df1c9922 (patch) | |
| tree | d8597b8f7e0ce4274eb49bb39b0eb45c82c9fdb4 /drivers/net/ethernet/microchip | |
| parent | 74e7feff0e22f054839c18b29658d33e7b2d8512 (diff) | |
net: sparx5: Do not use mac_addr uninitialized in mchp_sparx5_probe()
Clang warns:
drivers/net/ethernet/microchip/sparx5/sparx5_main.c:760:29: warning:
variable 'mac_addr' is uninitialized when used here [-Wuninitialized]
if (of_get_mac_address(np, mac_addr)) {
^~~~~~~~
drivers/net/ethernet/microchip/sparx5/sparx5_main.c:669:14: note:
initialize the variable 'mac_addr' to silence this warning
u8 *mac_addr;
^
= NULL
1 warning generated.
mac_addr is only used to store the value retrieved from
of_get_mac_address(), which is then copied into the base_mac member of
the sparx5 struct using ether_addr_copy(). It is easier to just use the
base_mac address directly, which avoids the warning and the extra copy.
Fixes: 3cfa11bac9bb ("net: sparx5: add the basic sparx5 driver")
Link: https://github.com/ClangBuiltLinux/linux/issues/1413
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/microchip')
| -rw-r--r-- | drivers/net/ethernet/microchip/sparx5/sparx5_main.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c index abaa086ce345..f666133a15de 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c @@ -670,7 +670,6 @@ static int mchp_sparx5_probe(struct platform_device *pdev) struct reset_control *reset; struct sparx5 *sparx5; int idx = 0, err = 0; - u8 *mac_addr; if (!np && !pdev->dev.platform_data) return -ENODEV; @@ -761,12 +760,10 @@ static int mchp_sparx5_probe(struct platform_device *pdev) if (err) goto cleanup_config; - if (of_get_mac_address(np, mac_addr)) { + if (!of_get_mac_address(np, sparx5->base_mac)) { dev_info(sparx5->dev, "MAC addr was not set, use random MAC\n"); eth_random_addr(sparx5->base_mac); sparx5->base_mac[5] = 0; - } else { - ether_addr_copy(sparx5->base_mac, mac_addr); } sparx5->xtr_irq = platform_get_irq_byname(sparx5->pdev, "xtr"); |