Commit 29089908 authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman
Browse files

staging: comedi: ni_labpc: dma requires an interrupt



DMA support only works if an interrupt is available.

Signed-off-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 19a40abf
......@@ -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) {
......
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