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staging: comedi: addi_apci_2032: set COMEDI_CB_OVERFLOW

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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@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ian Abbott 2012-12-03 18:15:42 +00:00 committed by Greg Kroah-Hartman
parent b82fe57c4d
commit 6bf9a3babe
1 changed files with 4 additions and 2 deletions
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6
drivers/staging/comedi/drivers/addi_apci_2032.c
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@ -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;