diff options
| -rw-r--r-- | drivers/net/sfc/efx.c | 12 | ||||
| -rw-r--r-- | drivers/net/sfc/net_driver.h | 2 | ||||
| -rw-r--r-- | drivers/net/sfc/nic.c | 6 |
3 files changed, 18 insertions, 2 deletions
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c index 05df20e47976..d06cb742164b 100644 --- a/drivers/net/sfc/efx.c +++ b/drivers/net/sfc/efx.c @@ -335,8 +335,10 @@ void efx_process_channel_now(struct efx_channel *channel) /* Disable interrupts and wait for ISRs to complete */ efx_nic_disable_interrupts(efx); - if (efx->legacy_irq) + if (efx->legacy_irq) { synchronize_irq(efx->legacy_irq); + efx->legacy_irq_enabled = false; + } if (channel->irq) synchronize_irq(channel->irq); @@ -351,6 +353,8 @@ void efx_process_channel_now(struct efx_channel *channel) efx_channel_processed(channel); napi_enable(&channel->napi_str); + if (efx->legacy_irq) + efx->legacy_irq_enabled = true; efx_nic_enable_interrupts(efx); } @@ -1400,6 +1404,8 @@ static void efx_start_all(struct efx_nic *efx) efx_start_channel(channel); } + if (efx->legacy_irq) + efx->legacy_irq_enabled = true; efx_nic_enable_interrupts(efx); /* Switch to event based MCDI completions after enabling interrupts. @@ -1460,8 +1466,10 @@ static void efx_stop_all(struct efx_nic *efx) /* Disable interrupts and wait for ISR to complete */ efx_nic_disable_interrupts(efx); - if (efx->legacy_irq) + if (efx->legacy_irq) { synchronize_irq(efx->legacy_irq); + efx->legacy_irq_enabled = false; + } efx_for_each_channel(channel, efx) { if (channel->irq) synchronize_irq(channel->irq); diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h index 0a7e26d73b52..b137c889152b 100644 --- a/drivers/net/sfc/net_driver.h +++ b/drivers/net/sfc/net_driver.h @@ -621,6 +621,7 @@ struct efx_filter_state; * @pci_dev: The PCI device * @type: Controller type attributes * @legacy_irq: IRQ number + * @legacy_irq_enabled: Are IRQs enabled on NIC (INT_EN_KER register)? * @workqueue: Workqueue for port reconfigures and the HW monitor. * Work items do not hold and must not acquire RTNL. * @workqueue_name: Name of workqueue @@ -709,6 +710,7 @@ struct efx_nic { struct pci_dev *pci_dev; const struct efx_nic_type *type; int legacy_irq; + bool legacy_irq_enabled; struct workqueue_struct *workqueue; char workqueue_name[16]; struct work_struct reset_work; diff --git a/drivers/net/sfc/nic.c b/drivers/net/sfc/nic.c index 41c36b9a4244..67cb0c96838c 100644 --- a/drivers/net/sfc/nic.c +++ b/drivers/net/sfc/nic.c @@ -1418,6 +1418,12 @@ static irqreturn_t efx_legacy_interrupt(int irq, void *dev_id) u32 queues; int syserr; + /* Could this be ours? If interrupts are disabled then the + * channel state may not be valid. + */ + if (!efx->legacy_irq_enabled) + return result; + /* Read the ISR which also ACKs the interrupts */ efx_readd(efx, ®, FR_BZ_INT_ISR0); queues = EFX_EXTRACT_DWORD(reg, 0, 31); |