diff options
| author | Yang Yingliang <yangyingliang@huawei.com> | 2021-05-29 11:04:39 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-05-30 14:22:31 -0700 |
| commit | 9fe99de01440d9ede74d447ac76e9c445d8daae9 (patch) | |
| tree | 519535d372818ae806734a8b7e10e1eedd09659e /drivers/net/dsa/qca8k.c | |
| parent | 7c9896e37807862e276064dd9331860f5d27affc (diff) | |
net: dsa: qca8k: add missing check return value in qca8k_phylink_mac_config()
Now we can check qca8k_read() return value correctly, so if
it fails, we need return directly.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/dsa/qca8k.c')
| -rw-r--r-- | drivers/net/dsa/qca8k.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/net/dsa/qca8k.c b/drivers/net/dsa/qca8k.c index d761c5947222..6fe963ba23e8 100644 --- a/drivers/net/dsa/qca8k.c +++ b/drivers/net/dsa/qca8k.c @@ -1128,6 +1128,7 @@ qca8k_phylink_mac_config(struct dsa_switch *ds, int port, unsigned int mode, { struct qca8k_priv *priv = ds->priv; u32 reg, val; + int ret; switch (port) { case 0: /* 1st CPU port */ @@ -1198,7 +1199,9 @@ qca8k_phylink_mac_config(struct dsa_switch *ds, int port, unsigned int mode, qca8k_write(priv, reg, QCA8K_PORT_PAD_SGMII_EN); /* Enable/disable SerDes auto-negotiation as necessary */ - qca8k_read(priv, QCA8K_REG_PWS, &val); + ret = qca8k_read(priv, QCA8K_REG_PWS, &val); + if (ret) + return; if (phylink_autoneg_inband(mode)) val &= ~QCA8K_PWS_SERDES_AEN_DIS; else @@ -1206,7 +1209,9 @@ qca8k_phylink_mac_config(struct dsa_switch *ds, int port, unsigned int mode, qca8k_write(priv, QCA8K_REG_PWS, val); /* Configure the SGMII parameters */ - qca8k_read(priv, QCA8K_REG_SGMII_CTRL, &val); + ret = qca8k_read(priv, QCA8K_REG_SGMII_CTRL, &val); + if (ret) + return; val |= QCA8K_SGMII_EN_PLL | QCA8K_SGMII_EN_RX | QCA8K_SGMII_EN_TX | QCA8K_SGMII_EN_SD; |