[PATCH v2] staging: comedi: dt282x: fix IRQ assignment for dev->irq.

[Arvind Yadav]

Here, dev->irq is not assigned with irq. 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 at gmail.com>
---
changes in v2:
	comedi_isadma_alloc() can fail. adding dev->irq assignment after
        successful return of comedi_isadma_alloc().

 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..217a4b8 100644
--- a/drivers/staging/comedi/drivers/dt282x.c
+++ b/drivers/staging/comedi/drivers/dt282x.c
@@ -1062,6 +1062,8 @@ static void dt282x_alloc_dma(struct comedi_device *dev,
 					   PAGE_SIZE, 0);
 	if (!devpriv->dma)
 		free_irq(irq_num, dev);
+	else
+		dev->irq = irq_num;
 }
 
 static void dt282x_free_dma(struct comedi_device *dev)
-- 
2.7.4