Commit 051b7887 authored by Roman Li's avatar Roman Li Committed by Alex Deucher

drm/amd/display: Fix potential memory leak in DMUB hw_init

[Why]
On resume we perform DMUB hw_init which allocates memory:
dm_resume->dm_dmub_hw_init->dc_dmub_srv_create->kzalloc
That results in memory leak in suspend/resume scenarios.

[How]
Allocate memory for the DC wrapper to DMUB only if it was not
allocated before.
No need to reallocate it on suspend/resume.
Signed-off-by: default avatarLang Yu <Lang.Yu@amd.com>
Signed-off-by: default avatarRoman Li <roman.li@amd.com>
Reviewed-by: default avatarNicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: default avatarQingqing Zhuo <qingqing.zhuo@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 3beac533
......@@ -982,7 +982,8 @@ static int dm_dmub_hw_init(struct amdgpu_device *adev)
abm->dmcu_is_running = dmcu->funcs->is_dmcu_initialized(dmcu);
}
adev->dm.dc->ctx->dmub_srv = dc_dmub_srv_create(adev->dm.dc, dmub_srv);
if (!adev->dm.dc->ctx->dmub_srv)
adev->dm.dc->ctx->dmub_srv = dc_dmub_srv_create(adev->dm.dc, dmub_srv);
if (!adev->dm.dc->ctx->dmub_srv) {
DRM_ERROR("Couldn't allocate DC DMUB server!\n");
return -ENOMEM;
......@@ -2003,7 +2004,6 @@ static int dm_suspend(void *handle)
amdgpu_dm_irq_suspend(adev);
dc_set_power_state(dm->dc, DC_ACPI_CM_POWER_STATE_D3);
return 0;
......
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