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drm/amd/pm: Stop pp_od_clk_voltage emit at PAGE_SIZE

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Stop appending OD sections in amdgpu_get_pp_od_clk_voltage()
once the sysfs page is full, instead of checking every sysfs_emit_at()
in SMU helpers. This is purely defensive hardening.

v2: Drop the prior series that checked sysfs_emit_at()
return values in every SMU *_emit_clk_levels() helper and
smu_cmn_print_*().(Kevin)

v3: Update description, remove all clamping

Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Asad Kamal 2026-06-03 15:11:33 +08:00 committed by Alex Deucher
parent 01112e241e
commit d2be142124
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/amd/pm/amdgpu_pm.c
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@ -874,6 +874,8 @@ static ssize_t amdgpu_get_pp_od_clk_voltage(struct device *dev,
for (clk_index = 0 ; clk_index < ARRAY_SIZE(od_clocks) ; clk_index++) {
amdgpu_dpm_emit_clock_levels(adev, od_clocks[clk_index], buf, &size);
if (unlikely(size >= (PAGE_SIZE - 1)))
break;
}
if (size == 0)