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drm/amd/display: Fix double free

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[Why/How]
Reset pointer/address to avoid double free.

Reviewed-by: Sridevi Arvindekar <sridevi.arvindekar@amd.com>
Signed-off-by: Ilya Bakoulin <Ilya.Bakoulin@amd.com>
Signed-off-by: Chenyu Chen <chen-yu.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Ilya Bakoulin 2026-04-07 15:01:00 -04:00 committed by Alex Deucher
parent f4cdbb5d54
commit f67790a071
1 changed files with 8 additions and 2 deletions
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10
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn42/dcn42_clk_mgr.c
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@ -736,9 +736,12 @@ void dcn42_notify_wm_ranges(struct clk_mgr *clk_mgr_base)
clk_mgr_dcn42->smu_wm_set.mc_address.low_part);
dcn42_smu_transfer_wm_table_dram_2_smu(clk_mgr);
if (clk_mgr_dcn42->smu_wm_set.wm_set && clk_mgr_dcn42->smu_wm_set.mc_address.quad_part != 0)
if (clk_mgr_dcn42->smu_wm_set.wm_set && clk_mgr_dcn42->smu_wm_set.mc_address.quad_part != 0) {
dm_helpers_free_gpu_mem(clk_mgr->base.ctx, DC_MEM_ALLOC_TYPE_GART,
clk_mgr_dcn42->smu_wm_set.wm_set);
clk_mgr_dcn42->smu_wm_set.wm_set = NULL;
clk_mgr_dcn42->smu_wm_set.mc_address.quad_part = 0;
}
}
@ -1101,7 +1104,10 @@ void dcn42_clk_mgr_destroy(struct clk_mgr_internal *clk_mgr_int)
{
struct clk_mgr_dcn42 *clk_mgr = TO_CLK_MGR_DCN42(clk_mgr_int);
if (clk_mgr->smu_wm_set.wm_set && clk_mgr->smu_wm_set.mc_address.quad_part != 0)
if (clk_mgr->smu_wm_set.wm_set && clk_mgr->smu_wm_set.mc_address.quad_part != 0) {
dm_helpers_free_gpu_mem(clk_mgr_int->base.ctx, DC_MEM_ALLOC_TYPE_GART,
clk_mgr->smu_wm_set.wm_set);
clk_mgr->smu_wm_set.wm_set = NULL;
clk_mgr->smu_wm_set.mc_address.quad_part = 0;
}
}