From: YoungJun Cho yj44.cho@samsung.com
When IOMMU is not supported, buf->pages has to be allocated to assign the result of phys_to_page() which return type is struct page *. So it is sufficient to allocate buf->pages with the size of multiple struct page pointers.
Signed-off-by: YoungJun Cho yj44.cho@samsung.com Signed-off-by: Seung-Woo Kim sw0312.kim@samsung.com Signed-off-by: Kyungmin Park kyungmin.park@samsung.com --- change from v1: - adds precedence patch to fix allocation of array as Ville and Inki commented
drivers/gpu/drm/exynos/exynos_drm_buf.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_buf.c b/drivers/gpu/drm/exynos/exynos_drm_buf.c index 245c9ae..c300b2a 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_buf.c +++ b/drivers/gpu/drm/exynos/exynos_drm_buf.c @@ -57,7 +57,7 @@ static int lowlevel_buffer_allocate(struct drm_device *dev, dma_addr_t start_addr; unsigned int i = 0;
- buf->pages = drm_calloc_large(nr_pages, sizeof(struct page)); + buf->pages = drm_calloc_large(nr_pages, sizeof(struct page *)); if (!buf->pages) { DRM_ERROR("failed to allocate pages.\n"); return -ENOMEM;