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| author | Noralf Trønnes <noralf@tronnes.org> | 2021-02-19 13:22:03 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2021-02-25 10:33:39 +0100 |
| commit | cdea72518a2b38207146e92e1c9e2fac15975679 (patch) | |
| tree | d391515e9bcdf079d30ac5dedd3e7cc9c385d7ed | |
| parent | c129b49825530942f344ed3e0e6a72568ad3e3e2 (diff) | |
| download | linux-stable-cdea72518a2b38207146e92e1c9e2fac15975679.tar.gz linux-stable-cdea72518a2b38207146e92e1c9e2fac15975679.tar.bz2 linux-stable-cdea72518a2b38207146e92e1c9e2fac15975679.zip | |
drm/shmem-helpers: vunmap: Don't put pages for dma-buf
dma-buf importing was reworked in commit 7d2cd72a9aa3
("drm/shmem-helpers: Simplify dma-buf importing"). Before that commit
drm_gem_shmem_prime_import_sg_table() did set ->pages_use_count=1 and
drm_gem_shmem_vunmap_locked() could call drm_gem_shmem_put_pages()
unconditionally. Now without the use count set, put pages is called also
on dma-bufs. Fix this by only putting pages if it's not imported.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Fixes: 7d2cd72a9aa3 ("drm/shmem-helpers: Simplify dma-buf importing")
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Tested-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210219122203.51130-1-noralf@tronnes.org
| -rw-r--r-- | drivers/gpu/drm/drm_gem_shmem_helper.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c index 9825c378dfa6..c8a6547a1757 100644 --- a/drivers/gpu/drm/drm_gem_shmem_helper.c +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c @@ -357,13 +357,14 @@ static void drm_gem_shmem_vunmap_locked(struct drm_gem_shmem_object *shmem, if (--shmem->vmap_use_count > 0) return; - if (obj->import_attach) + if (obj->import_attach) { dma_buf_vunmap(obj->import_attach->dmabuf, map); - else + } else { vunmap(shmem->vaddr); + drm_gem_shmem_put_pages(shmem); + } shmem->vaddr = NULL; - drm_gem_shmem_put_pages(shmem); } /* |