drm/amdgpu: add missing vram lost check for LEGACY RESET

commit 81699fe81b0be287fb28b6210324db48e8458d9f upstream.

Legacy resets reset the memory controllers so VRAM contents
may be unreliable after reset.

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit aae94897b6661a2a4b1de2d328090fc388b3e0af)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index a8cb7397cb434747d837c58a3e8f5d3a0370c908..a57e8c5474bb00117aedbd6dd468aae703dacdc2 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3234,6 +3234,7 @@ static bool amdgpu_device_check_vram_lost(struct amdgpu_device *adev)
         * always assumed to be lost.
         */
        switch (amdgpu_asic_reset_method(adev)) {
+       case AMD_RESET_METHOD_LEGACY:
        case AMD_RESET_METHOD_LINK:
        case AMD_RESET_METHOD_BACO:
        case AMD_RESET_METHOD_MODE1: