Picked it up.
Thanks,
Inki Dae
2016년 02월 11일 20:32에 Marek Szyprowski 이(가) 쓴 글:
> dma_mmap_attrs() should be called with cpu address returned by
> dma_alloc_attrs(). Existing code however passed pages array base as cpu
> address. This worked only by a pure luck on ARM architecture. This patch
> fixes this issue.
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> ---
> drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 2 +-
> drivers/gpu/drm/exynos/exynos_drm_gem.c | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> index f6118ba..8baabd8 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> @@ -50,7 +50,7 @@ static int exynos_drm_fb_mmap(struct fb_info *info,
> if (vm_size > exynos_gem->size)
> return -EINVAL;
>
> - ret = dma_mmap_attrs(helper->dev->dev, vma, exynos_gem->pages,
> + ret = dma_mmap_attrs(helper->dev->dev, vma, exynos_gem->cookie,
> exynos_gem->dma_addr, exynos_gem->size,
> &exynos_gem->dma_attrs);
> if (ret < 0) {
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
> index 47d126a..26b5e4b 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
> @@ -335,7 +335,7 @@ static int exynos_drm_gem_mmap_buffer(struct exynos_drm_gem *exynos_gem,
> if (vm_size > exynos_gem->size)
> return -EINVAL;
>
> - ret = dma_mmap_attrs(drm_dev->dev, vma, exynos_gem->pages,
> + ret = dma_mmap_attrs(drm_dev->dev, vma, exynos_gem->cookie,
> exynos_gem->dma_addr, exynos_gem->size,
> &exynos_gem->dma_attrs);
> if (ret < 0) {
>
--
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