From 99f3cd52aee21091ce62442285a68873e3be833f Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Mon, 15 Dec 2014 10:40:28 -0300 Subject: [PATCH] [media] vb2-vmalloc: Protect DMA-specific code by #ifdef CONFIG_HAS_DMA 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 Acked-by: Marek Szyprowski Signed-off-by: Mauro Carvalho Chehab --- 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 7f6d41b..bcde8857 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, -- 2.7.4