diff options
| author | Roman Li <roman.li@amd.com> | 2021-05-10 18:58:54 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-06-03 00:55:10 +0300 |
| commit | c5699e2d863f58221044efdc3fa712dd32d55cde (patch) | |
| tree | 86330f5fa61222160d7ee2b7b3f3c61fa71cfd01 /drivers/gpu | |
| parent | dce3d8e1d070900e0feeb06787a319ff9379212c (diff) | |
| download | linux-c5699e2d863f58221044efdc3fa712dd32d55cde.tar.xz | |
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: Lang Yu <Lang.Yu@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 2a93a93d2443..bb18c9889a0c 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -925,7 +925,8 @@ 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; @@ -1954,7 +1955,6 @@ 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; |