diff options
Diffstat (limited to 'components')
| -rw-r--r-- | components/drivers/can/can.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/components/drivers/can/can.c b/components/drivers/can/can.c index 48604993b9..3d60dbaa55 100644 --- a/components/drivers/can/can.c +++ b/components/drivers/can/can.c @@ -853,7 +853,10 @@ void rt_hw_can_isr(struct rt_can_device *can, int event) level = rt_hw_interrupt_disable(); rx_length = can->hdr[hdr].msgs * sizeof(struct rt_can_msg); rt_hw_interrupt_enable(level); - can->hdr[hdr].filter.ind(&can->parent, can->hdr[hdr].filter.args, hdr, rx_length); + if (rx_length) + { + can->hdr[hdr].filter.ind(&can->parent, can->hdr[hdr].filter.args, hdr, rx_length); + } } else #endif @@ -867,7 +870,10 @@ void rt_hw_can_isr(struct rt_can_device *can, int event) rx_length = rt_list_len(&rx_fifo->uselist)* sizeof(struct rt_can_msg); rt_hw_interrupt_enable(level); - can->parent.rx_indicate(&can->parent, rx_length); + if (rx_length) + { + can->parent.rx_indicate(&can->parent, rx_length); + } } } break; |