| Message ID | 20200818151500.51548-1-yuehaibing@huawei.com |
|---|---|
| State | New |
| Headers | show |
| Series | [v2] net: stmmac: Fix signedness bug in stmmac_probe_config_dt() | expand |
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c index f32317fa75c8..a6052e980ec5 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c @@ -412,10 +412,11 @@ stmmac_probe_config_dt(struct platform_device *pdev, const char **mac) *mac = NULL; } - plat->phy_interface = device_get_phy_mode(&pdev->dev); - if (plat->phy_interface < 0) - return ERR_PTR(plat->phy_interface); + rc = device_get_phy_mode(&pdev->dev); + if (rc < 0) + return ERR_PTR(rc); + plat->phy_interface = rc; plat->interface = stmmac_of_get_mac_mode(np); if (plat->interface < 0) plat->interface = plat->phy_interface;
The "plat->phy_interface" variable is an enum and in this context GCC will treat it as an unsigned int so the error handling is never triggered. Fixes: b9f0b2f634c0 ("net: stmmac: platform: fix probe for ACPI devices") Signed-off-by: YueHaibing <yuehaibing@huawei.com> --- v2: use rc to do err handling --- drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)