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

Fixes memory leak on module unload.

CC: <[email protected]>
Signed-off-by: Jan Vesely <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>
(cherry picked from commit 58272c1ad771802a6f15a482ae552649e9085042)

1 files changed, 6 insertions, 1 deletions

diff --git a/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c b/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c
index f4bbd3e7324..84d8ca6fcf3 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;