diff options
| author | Rob Herring <robh@kernel.org> | 2019-07-19 08:28:51 -0600 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2019-08-12 14:17:09 -0600 |
| commit | 930a402485b205214231f1141632afdca8ff89cb (patch) | |
| tree | 32a6f595dd0fa387f1acf932d129ff59804c6869 /drivers/gpu/drm/drm_gem.c | |
| parent | ac9fd659ef8cac9a71f0ef943ef6da04f1939775 (diff) | |
| download | linux-930a402485b205214231f1141632afdca8ff89cb.tar.bz2 | |
drm/gem: Allow sparsely populated page arrays in drm_gem_put_pages
Panfrost has a need for pages allocated on demand via GPU page faults.
When releasing the pages, the only thing preventing using
drm_gem_put_pages() is needing to skip over unpopulated pages, so allow
for skipping over NULL struct page pointers.
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Steven Price <steven.price@arm.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190808222200.13176-2-robh@kernel.org
Diffstat (limited to 'drivers/gpu/drm/drm_gem.c')
| -rw-r--r-- | drivers/gpu/drm/drm_gem.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c index afc38cece3f5..a2dd198177f2 100644 --- a/drivers/gpu/drm/drm_gem.c +++ b/drivers/gpu/drm/drm_gem.c @@ -633,6 +633,9 @@ void drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages, pagevec_init(&pvec); for (i = 0; i < npages; i++) { + if (!pages[i]) + continue; + if (dirty) set_page_dirty(pages[i]); |