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drm/omapdrm: Compute dumb-buffer sizes with drm_mode_size_dumb()

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Call drm_mode_size_dumb() to compute dumb-buffer scanline pitch and
buffer size. Align the pitch to a multiple of 8.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://lore.kernel.org/r/20250821081918.79786-16-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann
2025-08-21 10:17:22 +02:00
parent 7aff3a6be7
commit 9ea885b3a6
1 changed files with 7 additions and 8 deletions
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15
drivers/gpu/drm/omapdrm/omap_gem.c
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@@ -10,6 +10,7 @@
#include <linux/spinlock.h>
#include <linux/vmalloc.h>
#include <drm/drm_dumb_buffers.h>
#include <drm/drm_prime.h>
#include <drm/drm_vma_manager.h>
@@ -580,15 +581,13 @@ static int omap_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struc
int omap_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
struct drm_mode_create_dumb *args)
{
union omap_gem_size gsize;
union omap_gem_size gsize = { };
int ret;
args->pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
args->size = PAGE_ALIGN(args->pitch * args->height);
gsize = (union omap_gem_size){
.bytes = args->size,
};
ret = drm_mode_size_dumb(dev, args, SZ_8, 0);
if (ret)
return ret;
gsize.bytes = args->size;
return omap_gem_new_handle(dev, file, gsize,
OMAP_BO_SCANOUT | OMAP_BO_WC, &args->handle);