diff options
Diffstat (limited to 'drivers/net/ethernet/apm/xgene/xgene_enet_main.c')
| -rw-r--r-- | drivers/net/ethernet/apm/xgene/xgene_enet_main.c | 76 |
1 files changed, 35 insertions, 41 deletions
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c index 523b8eff6d7b..b3568c453b14 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c @@ -293,36 +293,29 @@ static int xgene_enet_tx_completion(struct xgene_enet_desc_ring *cp_ring, static int xgene_enet_setup_mss(struct net_device *ndev, u32 mss) { struct xgene_enet_pdata *pdata = netdev_priv(ndev); - bool mss_index_found = false; - int mss_index; + int mss_index = -EBUSY; int i; spin_lock(&pdata->mss_lock); /* Reuse the slot if MSS matches */ - for (i = 0; !mss_index_found && i < NUM_MSS_REG; i++) { + for (i = 0; mss_index < 0 && i < NUM_MSS_REG; i++) { if (pdata->mss[i] == mss) { pdata->mss_refcnt[i]++; mss_index = i; - mss_index_found = true; } } /* Overwrite the slot with ref_count = 0 */ - for (i = 0; !mss_index_found && i < NUM_MSS_REG; i++) { + for (i = 0; mss_index < 0 && i < NUM_MSS_REG; i++) { if (!pdata->mss_refcnt[i]) { pdata->mss_refcnt[i]++; pdata->mac_ops->set_mss(pdata, mss, i); pdata->mss[i] = mss; mss_index = i; - mss_index_found = true; } } - /* No slots with ref_count = 0 available, return busy */ - if (!mss_index_found) - mss_index = -EBUSY; - spin_unlock(&pdata->mss_lock); return mss_index; @@ -840,7 +833,7 @@ static int xgene_enet_napi(struct napi_struct *napi, const int budget) processed = xgene_enet_process_ring(ring, budget); if (processed != budget) { - napi_complete(napi); + napi_complete_done(napi, processed); enable_irq(ring->irq); } @@ -1453,7 +1446,7 @@ err: return ret; } -static struct rtnl_link_stats64 *xgene_enet_get_stats64( +static void xgene_enet_get_stats64( struct net_device *ndev, struct rtnl_link_stats64 *storage) { @@ -1462,7 +1455,6 @@ static struct rtnl_link_stats64 *xgene_enet_get_stats64( struct xgene_enet_desc_ring *ring; int i; - memset(stats, 0, sizeof(struct rtnl_link_stats64)); for (i = 0; i < pdata->txq_cnt; i++) { ring = pdata->tx_ring[i]; if (ring) { @@ -1484,8 +1476,6 @@ static struct rtnl_link_stats64 *xgene_enet_get_stats64( } } memcpy(storage, stats, sizeof(struct rtnl_link_stats64)); - - return storage; } static int xgene_enet_set_mac_address(struct net_device *ndev, void *addr) @@ -1759,6 +1749,12 @@ static int xgene_enet_get_resources(struct xgene_enet_pdata *pdata) pdata->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(pdata->clk)) { + /* Abort if the clock is defined but couldn't be retrived. + * Always abort if the clock is missing on DT system as + * the driver can't cope with this case. + */ + if (PTR_ERR(pdata->clk) != -ENOENT || dev->of_node) + return PTR_ERR(pdata->clk); /* Firmware may have set up the clock already. */ dev_info(dev, "clocks have been setup already\n"); } @@ -1967,6 +1963,30 @@ static void xgene_enet_napi_add(struct xgene_enet_pdata *pdata) } } +#ifdef CONFIG_ACPI +static const struct acpi_device_id xgene_enet_acpi_match[] = { + { "APMC0D05", XGENE_ENET1}, + { "APMC0D30", XGENE_ENET1}, + { "APMC0D31", XGENE_ENET1}, + { "APMC0D3F", XGENE_ENET1}, + { "APMC0D26", XGENE_ENET2}, + { "APMC0D25", XGENE_ENET2}, + { } +}; +MODULE_DEVICE_TABLE(acpi, xgene_enet_acpi_match); +#endif + +static const struct of_device_id xgene_enet_of_match[] = { + {.compatible = "apm,xgene-enet", .data = (void *)XGENE_ENET1}, + {.compatible = "apm,xgene1-sgenet", .data = (void *)XGENE_ENET1}, + {.compatible = "apm,xgene1-xgenet", .data = (void *)XGENE_ENET1}, + {.compatible = "apm,xgene2-sgenet", .data = (void *)XGENE_ENET2}, + {.compatible = "apm,xgene2-xgenet", .data = (void *)XGENE_ENET2}, + {}, +}; + +MODULE_DEVICE_TABLE(of, xgene_enet_of_match); + static int xgene_enet_probe(struct platform_device *pdev) { struct net_device *ndev; @@ -2113,32 +2133,6 @@ static void xgene_enet_shutdown(struct platform_device *pdev) xgene_enet_remove(pdev); } -#ifdef CONFIG_ACPI -static const struct acpi_device_id xgene_enet_acpi_match[] = { - { "APMC0D05", XGENE_ENET1}, - { "APMC0D30", XGENE_ENET1}, - { "APMC0D31", XGENE_ENET1}, - { "APMC0D3F", XGENE_ENET1}, - { "APMC0D26", XGENE_ENET2}, - { "APMC0D25", XGENE_ENET2}, - { } -}; -MODULE_DEVICE_TABLE(acpi, xgene_enet_acpi_match); -#endif - -#ifdef CONFIG_OF -static const struct of_device_id xgene_enet_of_match[] = { - {.compatible = "apm,xgene-enet", .data = (void *)XGENE_ENET1}, - {.compatible = "apm,xgene1-sgenet", .data = (void *)XGENE_ENET1}, - {.compatible = "apm,xgene1-xgenet", .data = (void *)XGENE_ENET1}, - {.compatible = "apm,xgene2-sgenet", .data = (void *)XGENE_ENET2}, - {.compatible = "apm,xgene2-xgenet", .data = (void *)XGENE_ENET2}, - {}, -}; - -MODULE_DEVICE_TABLE(of, xgene_enet_of_match); -#endif - static struct platform_driver xgene_enet_driver = { .driver = { .name = "xgene-enet", |