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ivtv: Fix PCI DMA direction

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The ivtv stream buffers may be for receive or for send but the attached
sg handle is always destined cpu->device.  We flush it correctly but the
allocation is wrongly done with the same type as the buffers.

See bug: http://bugzilla.kernel.org/show_bug.cgi?id=13385

(Note this doesn't close the bug - it fixes the ivtv part and in turn
the logging next shows up some rather alarming DMA sg list warnings in
libata)

Signed-off-by: Alan Cox <alan@linux.intel.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Cox 2009-06-05 11:56:18 +01:00 committed by Linus Torvalds
parent edaba2c533
commit e9e10124e2
1 changed files with 2 additions and 1 deletions
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3
drivers/media/video/ivtv/ivtv-queue.c
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@ -230,7 +230,8 @@ int ivtv_stream_alloc(struct ivtv_stream *s)
return -ENOMEM;
}
if (ivtv_might_use_dma(s)) {
s->sg_handle = pci_map_single(itv->pdev, s->sg_dma, sizeof(struct ivtv_sg_element), s->dma);
s->sg_handle = pci_map_single(itv->pdev, s->sg_dma,
sizeof(struct ivtv_sg_element), PCI_DMA_TODEVICE);
ivtv_stream_sync_for_cpu(s);
}