提交 129d65c1 编写于 作者: M Monk Liu 提交者: Alex Deucher

drm/amdgpu:fix virtual dce bug

this fix the issue that access memory after freed
after driver unloaded.
Signed-off-by: NMonk Liu <Monk.Liu@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
上级 24136135
......@@ -437,6 +437,8 @@ static int dce_virtual_sw_fini(void *handle)
drm_kms_helper_poll_fini(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;
return 0;
}
......@@ -723,7 +725,7 @@ static void dce_virtual_set_crtc_vblank_interrupt_state(struct amdgpu_device *ad
int crtc,
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);
return;
}
......
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