diff options
Diffstat (limited to 'drivers/net/can/m_can')
| -rw-r--r-- | drivers/net/can/m_can/m_can.c | 37 |
1 files changed, 19 insertions, 18 deletions
diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c index 8e83d6963d85..a5003435802b 100644 --- a/drivers/net/can/m_can/m_can.c +++ b/drivers/net/can/m_can/m_can.c @@ -972,8 +972,8 @@ static int m_can_rx_peripheral(struct net_device *dev, u32 irqstatus) /* Don't re-enable interrupts if the driver had a fatal error * (e.g., FIFO read failure). */ - if (work_done >= 0) - m_can_enable_all_interrupts(cdev); + if (work_done < 0) + m_can_disable_all_interrupts(cdev); return work_done; } @@ -1083,8 +1083,7 @@ static irqreturn_t m_can_isr(int irq, void *dev_id) return IRQ_NONE; /* ACK all irqs */ - if (ir & IR_ALL_INT) - m_can_write(cdev, M_CAN_IR, ir); + m_can_write(cdev, M_CAN_IR, ir); if (cdev->ops->clear_interrupts) cdev->ops->clear_interrupts(cdev); @@ -1096,11 +1095,12 @@ static irqreturn_t m_can_isr(int irq, void *dev_id) */ if ((ir & IR_RF0N) || (ir & IR_ERR_ALL_30X)) { cdev->irqstatus = ir; - m_can_disable_all_interrupts(cdev); - if (!cdev->is_peripheral) + if (!cdev->is_peripheral) { + m_can_disable_all_interrupts(cdev); napi_schedule(&cdev->napi); - else if (m_can_rx_peripheral(dev, ir) < 0) + } else if (m_can_rx_peripheral(dev, ir) < 0) { goto out_fail; + } } if (cdev->version == 30) { @@ -1262,6 +1262,7 @@ static int m_can_set_bittiming(struct net_device *dev) static int m_can_chip_config(struct net_device *dev) { struct m_can_classdev *cdev = netdev_priv(dev); + u32 interrupts = IR_ALL_INT; u32 cccr, test; int err; @@ -1271,6 +1272,11 @@ static int m_can_chip_config(struct net_device *dev) return err; } + /* Disable unused interrupts */ + interrupts &= ~(IR_ARA | IR_ELO | IR_DRX | IR_TEFF | IR_TEFW | IR_TFE | + IR_TCF | IR_HPM | IR_RF1F | IR_RF1W | IR_RF1N | + IR_RF0F | IR_RF0W); + m_can_config_endisable(cdev, true); /* RX Buffer/FIFO Element Size 64 bytes data field */ @@ -1365,16 +1371,13 @@ static int m_can_chip_config(struct net_device *dev) m_can_write(cdev, M_CAN_TEST, test); /* Enable interrupts */ - m_can_write(cdev, M_CAN_IR, IR_ALL_INT); - if (!(cdev->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING)) + if (!(cdev->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING)) { if (cdev->version == 30) - m_can_write(cdev, M_CAN_IE, IR_ALL_INT & - ~(IR_ERR_LEC_30X)); + interrupts &= ~(IR_ERR_LEC_30X); else - m_can_write(cdev, M_CAN_IE, IR_ALL_INT & - ~(IR_ERR_LEC_31X)); - else - m_can_write(cdev, M_CAN_IE, IR_ALL_INT); + interrupts &= ~(IR_ERR_LEC_31X); + } + m_can_write(cdev, M_CAN_IE, interrupts); /* route all interrupts to INT0 */ m_can_write(cdev, M_CAN_ILS, ILS_ALL_INT0); @@ -1592,10 +1595,8 @@ static int m_can_close(struct net_device *dev) cdev->tx_skb = NULL; destroy_workqueue(cdev->tx_wq); cdev->tx_wq = NULL; - } - - if (cdev->is_peripheral) can_rx_offload_disable(&cdev->offload); + } close_candev(dev); |