leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

drm/amdgpu:fix virtual dce bug

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

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Monk Liu 2017-11-15 17:10:13 +08:00 committed by Alex Deucher
parent 2413613506
commit 129d65c18e
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/amd/amdgpu/dce_virtual.c
View File

@ -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;
}