[PATCH] drm/etnaviv: hold object lock while getting pages for coredump

[Lucas Stach]

While all objects that get coredumped have an active IOVA and thus
pages already populated, etnaviv_gem_get_pages() still requires the
object lock to be held.

Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
---
 drivers/gpu/drm/etnaviv/etnaviv_dump.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_dump.c 
b/drivers/gpu/drm/etnaviv/etnaviv_dump.c
index bf8fa859e8be..fd7d3e989e79 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_dump.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_dump.c
@@ -201,7 +201,9 @@ void etnaviv_core_dump(struct etnaviv_gpu *gpu)

                obj = vram->object;

+               mutex_lock(&obj->lock);
                pages = etnaviv_gem_get_pages(obj);
+               mutex_unlock(&obj->lock);
                if (pages) {
                        int j;

-- 
2.7.0.rc3