diff options
Diffstat (limited to 'linux/drivers/media/video/video-buf.c')
| -rw-r--r-- | linux/drivers/media/video/video-buf.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/linux/drivers/media/video/video-buf.c b/linux/drivers/media/video/video-buf.c index bf132faef..bedf09b4c 100644 --- a/linux/drivers/media/video/video-buf.c +++ b/linux/drivers/media/video/video-buf.c @@ -5,10 +5,10 @@ * The functions expect the hardware being able to scatter gatter * (i.e. the buffers are not linear in physical memory, but fragmented * into PAGE_SIZE chunks). They also assume the driver does not need - * to touch the video data (thus it is probably not useful for USB as - * data often must be uncompressed by the drivers). + * to touch the video data (thus it is probably not useful for USB 1.1 + * as data often must be uncompressed by the drivers). * - * (c) 2001,02 Gerd Knorr <kraxel@bytesex.org> + * (c) 2001-2004 Gerd Knorr <kraxel@bytesex.org> [SUSE Labs] * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -119,6 +119,12 @@ videobuf_pages_to_sg(struct page **pages, int nr_pages, int offset) /* --------------------------------------------------------------------- */ +void videobuf_dma_init(struct videobuf_dmabuf *dma) +{ + memset(dma,0,sizeof(*dma)); + dma->magic = MAGIC_DMABUF; +} + int videobuf_dma_init_user(struct videobuf_dmabuf *dma, int direction, unsigned long data, unsigned long size) { @@ -275,9 +281,9 @@ void* videobuf_alloc(unsigned int size) vb = kmalloc(size,GFP_KERNEL); if (NULL != vb) { memset(vb,0,size); + videobuf_dma_init(&vb->dma); init_waitqueue_head(&vb->done); vb->magic = MAGIC_BUFFER; - vb->dma.magic = MAGIC_DMABUF; } return vb; } @@ -1235,6 +1241,7 @@ int videobuf_mmap_mapper(struct vm_area_struct *vma, EXPORT_SYMBOL_GPL(videobuf_vmalloc_to_sg); +EXPORT_SYMBOL_GPL(videobuf_dma_init); EXPORT_SYMBOL_GPL(videobuf_dma_init_user); EXPORT_SYMBOL_GPL(videobuf_dma_init_kernel); EXPORT_SYMBOL_GPL(videobuf_dma_init_overlay); |