diff options
Diffstat (limited to 'drivers/staging/octeon/ethernet-rx.c')
| -rw-r--r-- | drivers/staging/octeon/ethernet-rx.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/staging/octeon/ethernet-rx.c b/drivers/staging/octeon/ethernet-rx.c index e14a1bb04361..0315f60497b7 100644 --- a/drivers/staging/octeon/ethernet-rx.c +++ b/drivers/staging/octeon/ethernet-rx.c @@ -72,7 +72,7 @@ struct cvm_oct_core_state { int baseline_cores; /* * The number of additional cores that could be processing - * input packtes. + * input packets. */ atomic_t available_cores; cpumask_t cpu_state; @@ -80,6 +80,8 @@ struct cvm_oct_core_state { static struct cvm_oct_core_state core_state __cacheline_aligned_in_smp; +static int cvm_irq_cpu; + static void cvm_oct_enable_napi(void *_) { int cpu = smp_processor_id(); @@ -112,11 +114,7 @@ static void cvm_oct_no_more_work(void) { int cpu = smp_processor_id(); - /* - * CPU zero is special. It always has the irq enabled when - * waiting for incoming packets. - */ - if (cpu == 0) { + if (cpu == cvm_irq_cpu) { enable_irq(OCTEON_IRQ_WORKQ0 + pow_receive_group); return; } @@ -135,6 +133,7 @@ static irqreturn_t cvm_oct_do_interrupt(int cpl, void *dev_id) { /* Disable the IRQ and start napi_poll. */ disable_irq_nosync(OCTEON_IRQ_WORKQ0 + pow_receive_group); + cvm_irq_cpu = smp_processor_id(); cvm_oct_enable_napi(NULL); return IRQ_HANDLED; @@ -514,7 +513,7 @@ void cvm_oct_rx_initialize(void) if (NULL == dev_for_napi) panic("No net_devices were allocated."); - if (max_rx_cpus > 1 && max_rx_cpus < num_online_cpus()) + if (max_rx_cpus >= 1 && max_rx_cpus < num_online_cpus()) atomic_set(&core_state.available_cores, max_rx_cpus); else atomic_set(&core_state.available_cores, num_online_cpus()); @@ -526,7 +525,7 @@ void cvm_oct_rx_initialize(void) cvm_oct_napi_poll, rx_napi_weight); napi_enable(&cvm_oct_napi[i].napi); } - /* Register an IRQ hander for to receive POW interrupts */ + /* Register an IRQ handler to receive POW interrupts */ i = request_irq(OCTEON_IRQ_WORKQ0 + pow_receive_group, cvm_oct_do_interrupt, 0, "Ethernet", cvm_oct_device); |