Damage handling in cirrus requires a short-term mapping of the source
BO. Use drm_gem_shmem_vmap_local().
Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
---
drivers/gpu/drm/tiny/cirrus.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/tiny/cirrus.c b/drivers/gpu/drm/tiny/cirrus.c
index a043e602199e..21cd7056d45f 100644
--- a/drivers/gpu/drm/tiny/cirrus.c
+++ b/drivers/gpu/drm/tiny/cirrus.c
@@ -315,6 +315,7 @@ static int cirrus_fb_blit_rect(struct drm_framebuffer *fb,
struct drm_rect *rect)
{
struct cirrus_device *cirrus = to_cirrus(fb->dev);
+ struct drm_gem_object *obj = fb->obj[0];
struct dma_buf_map map;
void *vmap;
int idx, ret;
@@ -323,9 +324,12 @@ static int cirrus_fb_blit_rect(struct drm_framebuffer *fb,
if (!drm_dev_enter(&cirrus->dev, &idx))
goto out;
- ret = drm_gem_shmem_vmap(fb->obj[0], &map);
+ ret = dma_resv_lock(obj->resv, NULL);
if (ret)
goto out_dev_exit;
+ ret = drm_gem_shmem_vmap_local(fb->obj[0], &map);
+ if (ret)
+ goto out_dma_resv_unlock;
vmap = map.vaddr; /* TODO: Use mapping abstraction properly */
if (cirrus->cpp == fb->format->cpp[0])
@@ -345,9 +349,11 @@ static int cirrus_fb_blit_rect(struct drm_framebuffer *fb,
else
WARN_ON_ONCE("cpp mismatch");
- drm_gem_shmem_vunmap(fb->obj[0], &map);
ret = 0;
+ drm_gem_shmem_vunmap_local(obj, &map);
+out_dma_resv_unlock:
+ dma_resv_unlock(obj->resv);
out_dev_exit:
drm_dev_exit(idx);
out:
--
2.29.2
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