From c1f2d9b900e30119bcf6f88c0d11a0dd620fd060 Mon Sep 17 00:00:00 2001
From: Jan Vesely <jan.vesely@rutgers.edu>
Date: Fri, 18 May 2018 11:39:15 -0400
Subject: [PATCH] amdgpu: Destroy fd_hash table when the last device is
 removed.
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Fixes memory leak on module unload.
Analogous to mesa commit of the same name.
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
---
 amdgpu/amdgpu_device.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/amdgpu/amdgpu_device.c b/amdgpu/amdgpu_device.c
index e23dd3b3..34ac95b8 100644
--- a/amdgpu/amdgpu_device.c
+++ b/amdgpu/amdgpu_device.c
@@ -128,6 +128,10 @@ static void amdgpu_device_free_internal(amdgpu_device_handle dev)
 {
 	pthread_mutex_lock(&fd_mutex);
 	util_hash_table_remove(fd_tab, UINT_TO_PTR(dev->fd));
+	if (util_hash_table_count(fd_tab) == 0) {
+		util_hash_table_destroy(fd_tab);
+		fd_tab = NULL;
+	}
 	close(dev->fd);
 	if ((dev->flink_fd >= 0) && (dev->fd != dev->flink_fd))
 		close(dev->flink_fd);