From: Ivaylo Dimitrov Date: Wed, 5 Jan 2022 15:36:58 +0000 (+0200) Subject: drm: omapdrm: Fix implicit dma_buf fencing X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=36e195467ecca6a55fd1a9374d3109692f381fd7;p=linux.git drm: omapdrm: Fix implicit dma_buf fencing Currently omapdrm driver does not initialize dma_buf_export_info resv member, which leads to a new dma_resv being allocated and attached to the exported dma_buf. This leads to the issue that fences created on dma_buf objects imported by other drivers are ignored by omapdrm, as only fences in gem object resv are waited on. This leads to various issues like displaying incomplete frames. Fix that by initializing dma_buf resv to the resv of the gem object being exported. Signed-off-by: Ivaylo Dimitrov Tested-by: Merlijn Wajer Tested-by: Tony Lindgren Signed-off-by: Tomi Valkeinen Link: https://patchwork.freedesktop.org/patch/msgid/1641397018-29872-1-git-send-email-ivo.g.dimitrov.75@gmail.com --- diff --git a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c index 57af3d97be77a..ab3fc86e7256c 100644 --- a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c +++ b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c @@ -93,6 +93,7 @@ struct dma_buf *omap_gem_prime_export(struct drm_gem_object *obj, int flags) exp_info.size = omap_gem_mmap_size(obj); exp_info.flags = flags; exp_info.priv = obj; + exp_info.resv = obj->resv; return drm_gem_dmabuf_export(obj->dev, &exp_info); }