diff options
| -rw-r--r-- | drivers/gpu/drm/drm_prime.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index c38dacda6119..7856a9b3f8a8 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -922,40 +922,40 @@ EXPORT_SYMBOL(drm_prime_pages_to_sg); /** * drm_prime_sg_to_page_addr_arrays - convert an sg table into a page array * @sgt: scatter-gather table to convert - * @pages: array of page pointers to store the page array in + * @pages: optional array of page pointers to store the page array in * @addrs: optional array to store the dma bus address of each page - * @max_pages: size of both the passed-in arrays + * @max_entries: size of both the passed-in arrays * * Exports an sg table into an array of pages and addresses. This is currently * required by the TTM driver in order to do correct fault handling. */ int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages, - dma_addr_t *addrs, int max_pages) + dma_addr_t *addrs, int max_entries) { unsigned count; struct scatterlist *sg; struct page *page; - u32 len; - int pg_index; + u32 len, index; dma_addr_t addr; - pg_index = 0; + index = 0; for_each_sg(sgt->sgl, sg, sgt->nents, count) { len = sg->length; page = sg_page(sg); addr = sg_dma_address(sg); while (len > 0) { - if (WARN_ON(pg_index >= max_pages)) + if (WARN_ON(index >= max_entries)) return -1; - pages[pg_index] = page; + if (pages) + pages[index] = page; if (addrs) - addrs[pg_index] = addr; + addrs[index] = addr; page++; addr += PAGE_SIZE; len -= PAGE_SIZE; - pg_index++; + index++; } } return 0; |