diff options
| -rw-r--r-- | drivers/staging/comedi/drivers/addi_apci_2032.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/staging/comedi/drivers/addi_apci_2032.c b/drivers/staging/comedi/drivers/addi_apci_2032.c index 4c348dd2a5d..98691fdfbd4 100644 --- a/drivers/staging/comedi/drivers/addi_apci_2032.c +++ b/drivers/staging/comedi/drivers/addi_apci_2032.c @@ -246,7 +246,13 @@ static irqreturn_t apci2032_interrupt(int irq, void *d) return IRQ_NONE; val = inl(dev->iobase + APCI2032_INT_STATUS_REG) & 3; - outl(0x00, dev->iobase + APCI2032_INT_CTRL_REG); + /* Disable triggered interrupt sources. */ + outl(~val & 3, dev->iobase + APCI2032_INT_CTRL_REG); + /* + * Note: We don't reenable the triggered interrupt sources because they + * are level-sensitive, hardware error status interrupt sources and + * they'd keep triggering interrupts repeatedly. + */ if (comedi_buf_put(s->async, val)) s->async->events |= COMEDI_CB_BLOCK | COMEDI_CB_EOS; |