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Subject[PATCH] staging: comedi: dt282x: release irq on dt282x detach
Date
free_irq() should be called on driver 'dt282x' detach.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
---
drivers/staging/comedi/drivers/dt282x.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/staging/comedi/drivers/dt282x.c b/drivers/staging/comedi/drivers/dt282x.c
index d5295bb..a132f60 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);
@@ -1070,6 +1072,9 @@ static void dt282x_free_dma(struct comedi_device *dev)

if (devpriv)
comedi_isadma_free(devpriv->dma);
+
+ if (dev->irq)
+ free_irq(dev->irq, dev);
}

static int dt282x_initialize(struct comedi_device *dev)
--
2.7.4
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