[PATCH v2 07/25] drm/exynos: Compute dumb-buffer sizes with drm_mode_size_dumb()

[Thomas Zimmermann <tzimmermann@xxxxxxx>]

Call drm_mode_size_dumb() to compute dumb-buffer scanline pitch and
buffer size. No alignment required.

Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Cc: Inki Dae <inki.dae@xxxxxxxxxxx>
Cc: Seung-Woo Kim <sw0312.kim@xxxxxxxxxxx>
Cc: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
Cc: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
Cc: Alim Akhtar <alim.akhtar@xxxxxxxxxxx>
---
 drivers/gpu/drm/exynos/exynos_drm_gem.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c 
b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index 4787fee4696f..ffa1c02b4b1e 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -11,6 +11,7 @@
 #include <linux/shmem_fs.h>
 #include <linux/module.h>
 
+#include <drm/drm_dumb_buffers.h>
 #include <drm/drm_prime.h>
 #include <drm/drm_vma_manager.h>
 #include <drm/exynos_drm.h>
@@ -330,15 +331,16 @@ int exynos_drm_gem_dumb_create(struct drm_file *file_priv,
        unsigned int flags;
        int ret;
 
+       ret = drm_mode_size_dumb(dev, args, 0, 0);
+       if (ret)
+               return ret;
+
        /*
         * allocate memory to be used for framebuffer.
         * - this callback would be called by user application
         *      with DRM_IOCTL_MODE_CREATE_DUMB command.
         */
 
-       args->pitch = args->width * ((args->bpp + 7) / 8);
-       args->size = args->pitch * args->height;
-
        if (is_drm_iommu_supported(dev))
                flags = EXYNOS_BO_NONCONTIG | EXYNOS_BO_WC;
        else
-- 
2.47.1