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 <[email protected]> Reviewed-by: Yang Wang <[email protected]> --- drivers/gpu/drm/amd/pm/amdgpu_pm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c index 1e590db80221..85bef52887d2 100644 --- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c @@ -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) -- 2.46.0
