Commit 129d65c1 authored by Monk Liu's avatar Monk Liu Committed by Alex Deucher
Browse files

drm/amdgpu:fix virtual dce bug 



this fix the issue that access memory after freed
after driver unloaded.

Signed-off-by: default avatarMonk Liu <Monk.Liu@amd.com>
Acked-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 24136135

drivers/gpu/drm/amd/amdgpu/dce_virtual.c

+3 −1
Original line number Original line Diff line number Diff line
@@ -437,6 +437,8 @@ static int dce_virtual_sw_fini(void *handle) 
	drm_kms_helper_poll_fini(adev->ddev);

	drm_kms_helper_poll_fini(adev->ddev);





	drm_mode_config_cleanup(adev->ddev);

	drm_mode_config_cleanup(adev->ddev);

	/* clear crtcs pointer to avoid dce irq finish routine access freed data */

	memset(adev->mode_info.crtcs, 0, sizeof(adev->mode_info.crtcs[0]) * AMDGPU_MAX_CRTCS);

	adev->mode_info.mode_config_initialized = false;

	adev->mode_info.mode_config_initialized = false;

	return 0;

	return 0;

}

}
@@ -723,7 +725,7 @@ static void dce_virtual_set_crtc_vblank_interrupt_state(struct amdgpu_device *ad 
							int crtc,

							int crtc,

							enum amdgpu_interrupt_state state)

							enum amdgpu_interrupt_state state)

{

{

	if (crtc >= adev->mode_info.num_crtc) {

	if (crtc >= adev->mode_info.num_crtc || !adev->mode_info.crtcs[crtc]) {

		DRM_DEBUG("invalid crtc %d\n", crtc);

		DRM_DEBUG("invalid crtc %d\n", crtc);

		return;

		return;

	}

	}