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authorJens Axboe <jens.axboe@oracle.com>2007-10-22 15:19:53 -0400
committerJens Axboe <jens.axboe@oracle.com>2007-10-22 15:19:53 -0400
commit45711f1af6eff1a6d010703b4862e0d2b9afd056 (patch)
tree3d0048f46e3df9d217d56127462ebe680348bd5a /drivers/media/video/videobuf-dma-sg.c
parent78c2f0b8c285c5305b3e67b0595200541e15eb43 (diff)
[SG] Update drivers to use sg helpers
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/media/video/videobuf-dma-sg.c')
-rw-r--r--drivers/media/video/videobuf-dma-sg.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/media/video/videobuf-dma-sg.c b/drivers/media/video/videobuf-dma-sg.c
index 3eb6123227b..0a18286279d 100644
--- a/drivers/media/video/videobuf-dma-sg.c
+++ b/drivers/media/video/videobuf-dma-sg.c
@@ -60,12 +60,13 @@ videobuf_vmalloc_to_sg(unsigned char *virt, int nr_pages)
60 sglist = kcalloc(nr_pages, sizeof(struct scatterlist), GFP_KERNEL); 60 sglist = kcalloc(nr_pages, sizeof(struct scatterlist), GFP_KERNEL);
61 if (NULL == sglist) 61 if (NULL == sglist)
62 return NULL; 62 return NULL;
63 sg_init_table(sglist, nr_pages);
63 for (i = 0; i < nr_pages; i++, virt += PAGE_SIZE) { 64 for (i = 0; i < nr_pages; i++, virt += PAGE_SIZE) {
64 pg = vmalloc_to_page(virt); 65 pg = vmalloc_to_page(virt);
65 if (NULL == pg) 66 if (NULL == pg)
66 goto err; 67 goto err;
67 BUG_ON(PageHighMem(pg)); 68 BUG_ON(PageHighMem(pg));
68 sglist[i].page = pg; 69 sg_set_page(&sglist[i], pg);
69 sglist[i].length = PAGE_SIZE; 70 sglist[i].length = PAGE_SIZE;
70 } 71 }
71 return sglist; 72 return sglist;
@@ -86,13 +87,14 @@ videobuf_pages_to_sg(struct page **pages, int nr_pages, int offset)
86 sglist = kcalloc(nr_pages, sizeof(*sglist), GFP_KERNEL); 87 sglist = kcalloc(nr_pages, sizeof(*sglist), GFP_KERNEL);
87 if (NULL == sglist) 88 if (NULL == sglist)
88 return NULL; 89 return NULL;
90 sg_init_table(sglist, nr_pages);
89 91
90 if (NULL == pages[0]) 92 if (NULL == pages[0])
91 goto nopage; 93 goto nopage;
92 if (PageHighMem(pages[0])) 94 if (PageHighMem(pages[0]))
93 /* DMA to highmem pages might not work */ 95 /* DMA to highmem pages might not work */
94 goto highmem; 96 goto highmem;
95 sglist[0].page = pages[0]; 97 sg_set_page(&sglist[0], pages[0]);
96 sglist[0].offset = offset; 98 sglist[0].offset = offset;
97 sglist[0].length = PAGE_SIZE - offset; 99 sglist[0].length = PAGE_SIZE - offset;
98 for (i = 1; i < nr_pages; i++) { 100 for (i = 1; i < nr_pages; i++) {
@@ -100,7 +102,7 @@ videobuf_pages_to_sg(struct page **pages, int nr_pages, int offset)
100 goto nopage; 102 goto nopage;
101 if (PageHighMem(pages[i])) 103 if (PageHighMem(pages[i]))
102 goto highmem; 104 goto highmem;
103 sglist[i].page = pages[i]; 105 sg_set_page(&sglist[i], pages[i]);
104 sglist[i].length = PAGE_SIZE; 106 sglist[i].length = PAGE_SIZE;
105 } 107 }
106 return sglist; 108 return sglist;