diff options
Diffstat (limited to 'drivers/net/ibm_newemac/mal.c')
| -rw-r--r-- | drivers/net/ibm_newemac/mal.c | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/drivers/net/ibm_newemac/mal.c b/drivers/net/ibm_newemac/mal.c index 39f4cb6b0cf3..a680eb05ba60 100644 --- a/drivers/net/ibm_newemac/mal.c +++ b/drivers/net/ibm_newemac/mal.c @@ -45,6 +45,8 @@ int __devinit mal_register_commac(struct mal_instance *mal, return -EBUSY; } + if (list_empty(&mal->list)) + napi_enable(&mal->napi); mal->tx_chan_mask |= commac->tx_chan_mask; mal->rx_chan_mask |= commac->rx_chan_mask; list_add(&commac->list, &mal->list); @@ -67,6 +69,8 @@ void __devexit mal_unregister_commac(struct mal_instance *mal, mal->tx_chan_mask &= ~commac->tx_chan_mask; mal->rx_chan_mask &= ~commac->rx_chan_mask; list_del_init(&commac->list); + if (list_empty(&mal->list)) + napi_disable(&mal->napi); spin_unlock_irqrestore(&mal->lock, flags); } @@ -182,7 +186,7 @@ static inline void mal_enable_eob_irq(struct mal_instance *mal) set_mal_dcrn(mal, MAL_CFG, get_mal_dcrn(mal, MAL_CFG) | MAL_CFG_EOPIE); } -/* synchronized by __LINK_STATE_RX_SCHED bit in ndev->state */ +/* synchronized by NAPI state */ static inline void mal_disable_eob_irq(struct mal_instance *mal) { // XXX might want to cache MAL_CFG as the DCR read can be slooooow @@ -317,8 +321,8 @@ void mal_poll_disable(struct mal_instance *mal, struct mal_commac *commac) while (test_and_set_bit(MAL_COMMAC_POLL_DISABLED, &commac->flags)) msleep(1); - /* Synchronize with the MAL NAPI poller. */ - napi_disable(&mal->napi); + /* Synchronize with the MAL NAPI poller */ + __napi_synchronize(&mal->napi); } void mal_poll_enable(struct mal_instance *mal, struct mal_commac *commac) @@ -326,7 +330,12 @@ void mal_poll_enable(struct mal_instance *mal, struct mal_commac *commac) smp_wmb(); clear_bit(MAL_COMMAC_POLL_DISABLED, &commac->flags); - // XXX might want to kick a poll now... + /* Feels better to trigger a poll here to catch up with events that + * may have happened on this channel while disabled. It will most + * probably be delayed until the next interrupt but that's mostly a + * non-issue in the context where this is called. + */ + napi_schedule(&mal->napi); } static int mal_poll(struct napi_struct *napi, int budget) @@ -336,8 +345,7 @@ static int mal_poll(struct napi_struct *napi, int budget) int received = 0; unsigned long flags; - MAL_DBG2(mal, "poll(%d) %d ->" NL, *budget, - rx_work_limit); + MAL_DBG2(mal, "poll(%d)" NL, budget); again: /* Process TX skbs */ list_for_each(l, &mal->poll_list) { @@ -528,11 +536,12 @@ static int __devinit mal_probe(struct of_device *ofdev, } INIT_LIST_HEAD(&mal->poll_list); - mal->napi.weight = CONFIG_IBM_NEW_EMAC_POLL_WEIGHT; - mal->napi.poll = mal_poll; INIT_LIST_HEAD(&mal->list); spin_lock_init(&mal->lock); + netif_napi_add(NULL, &mal->napi, mal_poll, + CONFIG_IBM_NEW_EMAC_POLL_WEIGHT); + /* Load power-on reset defaults */ mal_reset(mal); |