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 Signed-off-by: Rob Herring robh@kernel.org --- drivers/gpu/drm/drm_gem.c | 3 +++ 1 file changed, 3 insertions(+)
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]);