Copy the vmap()'ed instance of struct dma_buf_map before modifying it,
in case the implementation of vunmap() depends on the exact address.
Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
---
drivers/gpu/drm/drm_fb_helper.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index b36d9852cdf7..d972ce75d180 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -395,14 +395,15 @@ static int drm_fb_helper_damage_blit(struct drm_fb_helper *fb_helper,
struct drm_clip_rect *clip)
{
struct drm_client_buffer *buffer = fb_helper->buffer;
- struct dma_buf_map map;
+ struct dma_buf_map map, dst;
int ret;
ret = drm_client_buffer_vmap(buffer, &map);
if (ret)
return ret;
- drm_fb_helper_damage_blit_real(fb_helper, clip, &map);
+ dst = map;
+ drm_fb_helper_damage_blit_real(fb_helper, clip, &dst);
drm_client_buffer_vunmap(buffer);
--
2.29.2
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