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drm/etnaviv: Use dma_buf from GEM object instance

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Avoid dereferencing struct drm_gem_object.import_attach for the
imported dma-buf. The dma_buf field in the GEM object instance refers
to the same buffer. Prepares to make import_attach optional.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Russell King <linux+etnaviv@armlinux.org.uk>
Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: etnaviv@lists.freedesktop.org
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Link: https://lore.kernel.org/r/20250317131923.238374-4-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2025-03-17 14:06:41 +01:00
parent 970003de19
commit e91eb3ae41
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
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@ -65,7 +65,7 @@ static void etnaviv_gem_prime_release(struct etnaviv_gem_object *etnaviv_obj)
struct iosys_map map = IOSYS_MAP_INIT_VADDR(etnaviv_obj->vaddr);
if (etnaviv_obj->vaddr)
dma_buf_vunmap_unlocked(etnaviv_obj->base.import_attach->dmabuf, &map);
dma_buf_vunmap_unlocked(etnaviv_obj->base.dma_buf, &map);
/* Don't drop the pages for imported dmabuf, as they are not
* ours, just free the array we allocated:
@ -82,7 +82,7 @@ static void *etnaviv_gem_prime_vmap_impl(struct etnaviv_gem_object *etnaviv_obj)
lockdep_assert_held(&etnaviv_obj->lock);
ret = dma_buf_vmap(etnaviv_obj->base.import_attach->dmabuf, &map);
ret = dma_buf_vmap(etnaviv_obj->base.dma_buf, &map);
if (ret)
return NULL;
return map.vaddr;