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drivers: ethernet: phy_mii: check return values in init

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check return values in init.

Signed-off-by: Fin Maaß <f.maass@vogl-electronic.com>
This commit is contained in:
Fin Maaß 2025-06-12 12:09:29 +02:00 • committed by Henrik Brix Andersen
commit 97c9f0edad
1 changed files with 16 additions and 5 deletions
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21
drivers/ethernet/phy/phy_mii.c
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@ -92,7 +92,7 @@ static inline int phy_mii_reg_write(const struct device *dev, uint16_t reg_addr,
return mdio_write(cfg->mdio, cfg->phy_addr, reg_addr, value);
}
static bool is_gigabit_supported(const struct device *dev)
static int read_gigabit_supported_flag(const struct device *dev, bool *supported)
{
uint16_t bmsr_reg;
uint16_t estat_reg;
@ -107,11 +107,13 @@ static bool is_gigabit_supported(const struct device *dev)
}
if ((estat_reg & (MII_ESTAT_1000BASE_T_HALF | MII_ESTAT_1000BASE_T_FULL)) != 0U) {
return true;
*supported = true;
return 0;
}
}
return false;
*supported = false;
return 0;
}
static int reset(const struct device *dev)
@ -536,13 +538,18 @@ static int phy_mii_initialize_dynamic_link(const struct device *dev)
const struct phy_mii_dev_config *const cfg = dev->config;
struct phy_mii_dev_data *const data = dev->data;
uint32_t phy_id;
int ret = 0;
data->state.is_up = false;
mdio_bus_enable(cfg->mdio);
if (cfg->no_reset == false) {
reset(dev);
ret = reset(dev);
if (ret < 0) {
LOG_ERR("Failed to reset PHY (%d): %d", cfg->phy_addr, ret);
return ret;
}
}
if (get_id(dev, &phy_id) == 0) {
@ -555,7 +562,11 @@ static int phy_mii_initialize_dynamic_link(const struct device *dev)
LOG_INF("PHY (%d) ID %X", cfg->phy_addr, phy_id);
}
data->gigabit_supported = is_gigabit_supported(dev);
ret = read_gigabit_supported_flag(dev, &data->gigabit_supported);
if (ret < 0) {
LOG_ERR("Failed to read PHY capabilities: %d", ret);
return ret;
}
k_work_init_delayable(&data->monitor_work, monitor_work_handler);