drm/amdgpu/gfx10: Disable gfxoff before disabling powergating.

BugLink: https://bugs.launchpad.net/bugs/2028808
commit 8173cab3368a13cdc3cad0bd5cf14e9399b0f501 upstream.

Otherwise we get a full system lock (looks like a FW mess).

Copied the order from the GFX9 powergating code.

Fixes: 366468ff6c34 ("drm/amdgpu: Allow GfxOff on Vangogh as default")
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2545
Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index 49d34c7bbf20f0a435f4bdfe2f3d38c8a2737e5e..be878a56ecebdcdc20f857c5d35b1b5408b01e74 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -8238,8 +8238,14 @@ static int gfx_v10_0_set_powergating_state(void *handle,
        case IP_VERSION(10, 3, 3):
        case IP_VERSION(10, 3, 6):
        case IP_VERSION(10, 3, 7):
+               if (!enable)
+                       amdgpu_gfx_off_ctrl(adev, false);
+
                gfx_v10_cntl_pg(adev, enable);
-               amdgpu_gfx_off_ctrl(adev, enable);
+
+               if (enable)
+                       amdgpu_gfx_off_ctrl(adev, true);
+
                break;
        default:
                break;