From: Ben Hutchings Date: Fri, 27 Jul 2012 18:31:16 +0000 (+0100) Subject: sfc: Change state names to be clearer, and comment them X-Git-Tag: v3.7-rc1~145^2~277^2~10 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f16aeea0e679d5fd43fc02e99569c52d77d5e5d3;p=platform%2Fkernel%2Flinux-stable.git sfc: Change state names to be clearer, and comment them STATE_INIT and STATE_FINI are equivalent and represent incompletely initialised states; combine them as STATE_UNINIT. Rename STATE_RUNNING to STATE_READY, to avoid confusion with netif_running() and IFF_RUNNING. The comments do not quite match current usage, but this will be corrected in subsequent fixes. Signed-off-by: Ben Hutchings --- diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c index 3b3f084..9f88ad8 100644 --- a/drivers/net/ethernet/sfc/efx.c +++ b/drivers/net/ethernet/sfc/efx.c @@ -202,7 +202,7 @@ static void efx_stop_all(struct efx_nic *efx); #define EFX_ASSERT_RESET_SERIALISED(efx) \ do { \ - if ((efx->state == STATE_RUNNING) || \ + if ((efx->state == STATE_READY) || \ (efx->state == STATE_DISABLED)) \ ASSERT_RTNL(); \ } while (0) @@ -1556,7 +1556,7 @@ static void efx_start_all(struct efx_nic *efx) * of these flags are safe to read under just the rtnl lock */ if (efx->port_enabled) return; - if ((efx->state != STATE_RUNNING) && (efx->state != STATE_INIT)) + if ((efx->state != STATE_READY) && (efx->state != STATE_UNINIT)) return; if (!netif_running(efx->net_dev)) return; @@ -2286,11 +2286,11 @@ static void efx_reset_work(struct work_struct *data) if (!pending) return; - /* If we're not RUNNING then don't reset. Leave the reset_pending + /* If we're not READY then don't reset. Leave the reset_pending * flags set so that efx_pci_probe_main will be retried */ - if (efx->state != STATE_RUNNING) { + if (efx->state != STATE_READY) { netif_info(efx, drv, efx->net_dev, - "scheduled reset quenched. NIC not RUNNING\n"); + "scheduled reset quenched; NIC not ready\n"); return; } @@ -2402,7 +2402,7 @@ static int efx_init_struct(struct efx_nic *efx, const struct efx_nic_type *type, INIT_DELAYED_WORK(&efx->selftest_work, efx_selftest_async_work); efx->pci_dev = pci_dev; efx->msg_enable = debug; - efx->state = STATE_INIT; + efx->state = STATE_UNINIT; strlcpy(efx->name, pci_name(pci_dev), sizeof(efx->name)); efx->net_dev = net_dev; @@ -2490,7 +2490,7 @@ static void efx_pci_remove(struct pci_dev *pci_dev) /* Mark the NIC as fini, then stop the interface */ rtnl_lock(); - efx->state = STATE_FINI; + efx->state = STATE_UNINIT; dev_close(efx->net_dev); /* Allow any queued efx_resets() to complete */ @@ -2684,9 +2684,9 @@ static int __devinit efx_pci_probe(struct pci_dev *pci_dev, goto fail4; } - /* Switch to the running state before we expose the device to the OS, + /* Switch to the READY state before we expose the device to the OS, * so that dev_open()|efx_start_all() will actually start the device */ - efx->state = STATE_RUNNING; + efx->state = STATE_READY; rc = efx_register_netdev(efx); if (rc) @@ -2727,7 +2727,7 @@ static int efx_pm_freeze(struct device *dev) { struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev)); - efx->state = STATE_FINI; + efx->state = STATE_UNINIT; netif_device_detach(efx->net_dev); @@ -2741,8 +2741,6 @@ static int efx_pm_thaw(struct device *dev) { struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev)); - efx->state = STATE_INIT; - efx_start_interrupts(efx, false); mutex_lock(&efx->mac_lock); @@ -2753,7 +2751,7 @@ static int efx_pm_thaw(struct device *dev) netif_device_attach(efx->net_dev); - efx->state = STATE_RUNNING; + efx->state = STATE_READY; efx->type->resume_wol(efx); diff --git a/drivers/net/ethernet/sfc/ethtool.c b/drivers/net/ethernet/sfc/ethtool.c index 8cba2df..5d0e2a3 100644 --- a/drivers/net/ethernet/sfc/ethtool.c +++ b/drivers/net/ethernet/sfc/ethtool.c @@ -531,7 +531,7 @@ static void efx_ethtool_self_test(struct net_device *net_dev, ASSERT_RTNL(); - if (efx->state != STATE_RUNNING) { + if (efx->state != STATE_READY) { rc = -EIO; goto fail1; } diff --git a/drivers/net/ethernet/sfc/falcon_boards.c b/drivers/net/ethernet/sfc/falcon_boards.c index 8687a6c..ec1e99d 100644 --- a/drivers/net/ethernet/sfc/falcon_boards.c +++ b/drivers/net/ethernet/sfc/falcon_boards.c @@ -380,7 +380,7 @@ static ssize_t set_phy_flash_cfg(struct device *dev, new_mode = PHY_MODE_SPECIAL; if (!((old_mode ^ new_mode) & PHY_MODE_SPECIAL)) { err = 0; - } else if (efx->state != STATE_RUNNING || netif_running(efx->net_dev)) { + } else if (efx->state != STATE_READY || netif_running(efx->net_dev)) { err = -EBUSY; } else { /* Reset the PHY, reconfigure the MAC and enable/disable diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h index a4fe9a7..7ab1232 100644 --- a/drivers/net/ethernet/sfc/net_driver.h +++ b/drivers/net/ethernet/sfc/net_driver.h @@ -430,11 +430,9 @@ enum efx_int_mode { #define EFX_INT_MODE_USE_MSI(x) (((x)->interrupt_mode) <= EFX_INT_MODE_MSI) enum nic_state { - STATE_INIT = 0, - STATE_RUNNING = 1, - STATE_FINI = 2, - STATE_DISABLED = 3, - STATE_MAX, + STATE_UNINIT = 0, /* device being probed/removed or is frozen */ + STATE_READY = 1, /* hardware ready and netdev registered */ + STATE_DISABLED = 2, /* device disabled due to hardware errors */ }; /* @@ -654,7 +652,7 @@ struct vfdi_status; * @irq_rx_adaptive: Adaptive IRQ moderation enabled for RX event queues * @irq_rx_moderation: IRQ moderation time for RX event queues * @msg_enable: Log message enable flags - * @state: Device state flag. Serialised by the rtnl_lock. + * @state: Device state number (%STATE_*). Serialised by the rtnl_lock. * @reset_pending: Bitmask for pending resets * @tx_queue: TX DMA queues * @rx_queue: RX DMA queues