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staging: comedi: ni_labpc: dma requires an interrupt

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DMA support only works if an interrupt is available.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2013-03-22 09:55:54 -07:00 committed by Greg Kroah-Hartman
parent 19a40abf5e
commit 290899082a
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/comedi/drivers/ni_labpc.c
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@ -1673,7 +1673,7 @@ int labpc_common_attach(struct comedi_device *dev, unsigned long iobase,
}
#ifdef CONFIG_ISA_DMA_API
if (dma_chan == 1 || dma_chan == 3) {
if (dev->irq && (dma_chan == 1 || dma_chan == 3)) {
devpriv->dma_buffer = kmalloc(dma_buffer_size,
GFP_KERNEL | GFP_DMA);
if (devpriv->dma_buffer) {