[PATCH] drm/amdgpu/gfx6: fix firmware leak on teardown

[Willian Oliveira]

The firmware requested in gfx_v6_0_init_microcode() is not released
when the GFX block is torn down, leaking the firmware resources.

Add gfx_v6_0_free_microcode() and call it from gfx_v6_0_sw_fini()
to release the PFP, ME, CE and RLC firmware.

Signed-off-by: Willian Oliveira <williandossantosdeoliveira287@xxxxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
index 95e939363db6..a5553d181d97 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
@@ -322,6 +322,14 @@ static const u32 verde_rlc_save_restore_register_list[] =
 	0x00000000
 };
 
+static void gfx_v6_0_free_microcode(struct amdgpu_device *adev)
+{
+	amdgpu_ucode_release(&adev->gfx.pfp_fw);
+	amdgpu_ucode_release(&adev->gfx.me_fw);
+	amdgpu_ucode_release(&adev->gfx.ce_fw);
+	amdgpu_ucode_release(&adev->gfx.rlc_fw);
+}
+
 static int gfx_v6_0_init_microcode(struct amdgpu_device *adev)
 {
 	const char *chip_name;
@@ -3254,6 +3262,7 @@ static int gfx_v6_0_sw_fini(struct amdgpu_ip_block *ip_block)
 		amdgpu_ring_fini(&adev->gfx.compute_ring[i]);
 
 	amdgpu_gfx_rlc_fini(adev);
+	gfx_v6_0_free_microcode(adev);
 
 	return 0;
 }
-- 
2.47.3