Hello,
On 2014-12-15 14:40, Geert Uytterhoeven wrote:
If NO_DMA=y:
drivers/built-in.o: In function `vb2_vmalloc_dmabuf_ops_detach':
videobuf2-vmalloc.c:(.text+0x6f11b0): undefined reference to `dma_unmap_sg'
drivers/built-in.o: In function `vb2_vmalloc_dmabuf_ops_map':
videobuf2-vmalloc.c:(.text+0x6f1266): undefined reference to `dma_unmap_sg'
videobuf2-vmalloc.c:(.text+0x6f1282): undefined reference to `dma_map_sg'
As we don't want to make the core VIDEOBUF2_VMALLOC depend on HAS_DMA
(it's v4l2 core code, and selected by a lot of drivers), stub out the
DMA support if HAS_DMA is not set.
Signed-off-by: Geert Uytterhoeven <ge...@linux-m68k.org>
Acked-by: Marek Szyprowski <m.szyprow...@samsung.com>
---
drivers/media/v4l2-core/videobuf2-vmalloc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/media/v4l2-core/videobuf2-vmalloc.c
b/drivers/media/v4l2-core/videobuf2-vmalloc.c
index fba944e502271069..d4fe55c85e0c5e71 100644
--- a/drivers/media/v4l2-core/videobuf2-vmalloc.c
+++ b/drivers/media/v4l2-core/videobuf2-vmalloc.c
@@ -211,6 +211,7 @@ static int vb2_vmalloc_mmap(void *buf_priv, struct
vm_area_struct *vma)
return 0;
}
+#ifdef CONFIG_HAS_DMA
/*********************************************/
/* DMABUF ops for exporters */
/*********************************************/
@@ -380,6 +381,8 @@ static struct dma_buf *vb2_vmalloc_get_dmabuf(void
*buf_priv, unsigned long flag
return dbuf;
}
+#endif /* CONFIG_HAS_DMA */
+
/*********************************************/
/* callbacks for DMABUF buffers */
@@ -437,7 +440,9 @@ const struct vb2_mem_ops vb2_vmalloc_memops = {
.put = vb2_vmalloc_put,
.get_userptr = vb2_vmalloc_get_userptr,
.put_userptr = vb2_vmalloc_put_userptr,
+#ifdef CONFIG_HAS_DMA
.get_dmabuf = vb2_vmalloc_get_dmabuf,
+#endif
.map_dmabuf = vb2_vmalloc_map_dmabuf,
.unmap_dmabuf = vb2_vmalloc_unmap_dmabuf,
.attach_dmabuf = vb2_vmalloc_attach_dmabuf,
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
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