If the call to `comedi_buf_put()` fails in the interrupt routine, set the `COMEDI_CB_OVERFLOW` event flag. Note that the `COMEDI_CB_ERROR` flag will have also been set by `comedi_buf_put()` in this case. Signed-off-by: Ian Abbott <abbotti@xxxxxxxxx> --- drivers/staging/comedi/drivers/addi_apci_2032.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/staging/comedi/drivers/addi_apci_2032.c b/drivers/staging/comedi/drivers/addi_apci_2032.c index f04f59d..aeb34db 100644 --- a/drivers/staging/comedi/drivers/addi_apci_2032.c +++ b/drivers/staging/comedi/drivers/addi_apci_2032.c @@ -248,8 +248,10 @@ static irqreturn_t apci2032_interrupt(int irq, void *d) s->state = inl(dev->iobase + APCI2032_INT_STATUS_REG); outl(0x0, dev->iobase + APCI2032_INT_CTRL_REG); - comedi_buf_put(s->async, s->state); - s->async->events |= COMEDI_CB_BLOCK | COMEDI_CB_EOS; + if (comedi_buf_put(s->async, s->state)) + s->async->events |= COMEDI_CB_BLOCK | COMEDI_CB_EOS; + else + s->async->events |= COMEDI_CB_OVERFLOW; comedi_event(dev, s); return IRQ_HANDLED; -- 1.8.0 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
