Here, dev->irq is not assigned with irq(irq_num). comedi_legacy_detach() is using dev->irq for release irq and dt282x_attach() is using dev->irq for initialize comedi_subdevice. Signed-off-by: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx> --- drivers/staging/comedi/drivers/dt282x.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/staging/comedi/drivers/dt282x.c b/drivers/staging/comedi/drivers/dt282x.c index d5295bb..afb7ac2 100644 --- a/drivers/staging/comedi/drivers/dt282x.c +++ b/drivers/staging/comedi/drivers/dt282x.c @@ -1057,6 +1057,8 @@ static void dt282x_alloc_dma(struct comedi_device *dev, if (request_irq(irq_num, dt282x_interrupt, 0, dev->board_name, dev)) return; + dev->irq = irq_num; + /* DMA uses two 4K buffers with separate DMA channels */ devpriv->dma = comedi_isadma_alloc(dev, 2, dma_chan[0], dma_chan[1], PAGE_SIZE, 0); -- 2.7.4 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
