| Message ID | 20210529030439.1723306-3-yangyingliang@huawei.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 9fe99de01440d9ede74d447ac76e9c445d8daae9 |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | net: dsa: qca8k: check return value of read functions correctly | expand |
| Context | Check | Description |
|---|---|---|
| netdev/cover_letter | success | Link |
| netdev/fixes_present | success | Link |
| netdev/patch_count | success | Link |
| netdev/tree_selection | success | Guessed tree name to be net-next |
| netdev/subject_prefix | warning | Target tree name not specified in the subject |
| netdev/cc_maintainers | warning | 3 maintainers not CCed: olteanv@gmail.com f.fainelli@gmail.com linux@armlinux.org.uk |
| netdev/source_inline | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Link |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/build_32bit | success | Errors and warnings before: 0 this patch: 0 |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/verify_fixes | success | Link |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 27 lines checked |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 0 this patch: 0 |
| netdev/header_inline | success | Link |
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;
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> --- drivers/net/dsa/qca8k.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)