Mesa (master): winsys/amdgpu: Destroy dev_hash table when the last winsys is removed.

[Jan Vesely]

Module: Mesa
Branch: master
Commit: 58272c1ad771802a6f15a482ae552649e9085042
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=58272c1ad771802a6f15a482ae552649e9085042

Author: Jan Vesely <jan.vesely at rutgers.edu>
Date:   Thu May 10 18:29:13 2018 -0400

winsys/amdgpu: Destroy dev_hash table when the last winsys is removed.

Fixes memory leak on module unload.

CC: <mesa-stable at lists.freedesktop.org>
Signed-off-by: Jan Vesely <jan.vesely at rutgers.edu>
Reviewed-by: Marek Olšák <marek.olsak at amd.com>

---

 src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c b/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c
index f4bbd3e732..84d8ca6fcf 100644
--- a/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c
+++ b/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c
@@ -220,8 +220,13 @@ static bool amdgpu_winsys_unref(struct radeon_winsys *rws)
    simple_mtx_lock(&dev_tab_mutex);
 
    destroy = pipe_reference(&ws->reference, NULL);
-   if (destroy && dev_tab)
+   if (destroy && dev_tab) {
       util_hash_table_remove(dev_tab, ws->dev);
+      if (util_hash_table_count(dev_tab) == 0) {
+         util_hash_table_destroy(dev_tab);
+         dev_tab = NULL;
+      }
+   }
 
    simple_mtx_unlock(&dev_tab_mutex);
    return destroy;