[PATCH v2 18/25] drm/renesas/rz-du: 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. Align the pitch according to hardware requirements.

Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Cc: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
---
 drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.c 
b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.c
index 90c6269ccd29..f752369cd52f 100644
--- a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.c
+++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.c
@@ -75,10 +75,11 @@ const struct rzg2l_du_format_info *rzg2l_du_format_info(u32 
fourcc)
 int rzg2l_du_dumb_create(struct drm_file *file, struct drm_device *dev,
                         struct drm_mode_create_dumb *args)
 {
-       unsigned int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
-       unsigned int align = 16 * args->bpp / 8;
+       int ret;
 
-       args->pitch = roundup(min_pitch, align);
+       ret = drm_mode_size_dumb(dev, args, 16 * args->bpp / 8, 0);
+       if (ret)
+               return ret;
 
        return drm_gem_dma_dumb_create_internal(file, dev, args);
 }
-- 
2.47.1