Hi Thomas,
I never received the original patch and I can't find it online either?
Anyway:
Acked-by: Paul Cercueil <p...@crapouillou.net>
Cheers,
-Paul
Le ven., nov. 12 2021 at 16:05:47 +0100, Thomas Zimmermann
<tzimmerm...@suse.de> a écrit :
Ping for review.
Am 08.07.21 um 19:51 schrieb Thomas Zimmermann:
The GEM CMA helpers allocate non-coherent (i.e., cached) backing
storage
with dma_alloc_noncoherent(), but release it with dma_free_wc(). Fix
this
with a call to dma_free_noncoherent(). Writecombining storage is
still
released with dma_free_wc().
Signed-off-by: Thomas Zimmermann <tzimmerm...@suse.de>
Fixes: cf8ccbc72d61 ("drm: Add support for GEM buffers backed by
non-coherent memory")
Cc: Paul Cercueil <p...@crapouillou.net>
Cc: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Cc: Maxime Ripard <mrip...@kernel.org>
Cc: David Airlie <airl...@linux.ie>
Cc: Daniel Vetter <dan...@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
---
drivers/gpu/drm/drm_gem_cma_helper.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c
b/drivers/gpu/drm/drm_gem_cma_helper.c
index d53388199f34..9d05674550a4 100644
--- a/drivers/gpu/drm/drm_gem_cma_helper.c
+++ b/drivers/gpu/drm/drm_gem_cma_helper.c
@@ -210,8 +210,13 @@ void drm_gem_cma_free_object(struct
drm_gem_object *gem_obj)
dma_buf_vunmap(gem_obj->import_attach->dmabuf, &map);
drm_prime_gem_destroy(gem_obj, cma_obj->sgt);
} else if (cma_obj->vaddr) {
- dma_free_wc(gem_obj->dev->dev, cma_obj->base.size,
- cma_obj->vaddr, cma_obj->paddr);
+ if (cma_obj->map_noncoherent)
+ dma_free_noncoherent(gem_obj->dev->dev,
cma_obj->base.size,
+ cma_obj->vaddr, cma_obj->paddr,
+ DMA_TO_DEVICE);
+ else
+ dma_free_wc(gem_obj->dev->dev, cma_obj->base.size,
+ cma_obj->vaddr, cma_obj->paddr);
}
drm_gem_object_release(gem_obj);
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev
