From: Lionel Landwerlin Date: Mon, 26 Mar 2018 10:08:22 +0100 Subject: drm/i915/perf: check the value of PROP_SAMPLE_OA uapi parameter Git-commit: b6dd47b9c82d619195370c38b7579fe18a8f6055 Patch-mainline: v4.18-rc1 References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166 We've been a bit loose about this opening parameter. We should only add the flag for writing OA reports when the value of this parameter is != 0. Signed-off-by: Lionel Landwerlin Reviewed-by: Matthew Auld Link: https://patchwork.freedesktop.org/patch/msgid/20180326090831.22686-3-lionel.g.landwerlin@intel.com Acked-by: Petr Tesarik --- drivers/gpu/drm/i915/i915_perf.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -2746,7 +2746,8 @@ static int read_properties_unlocked(stru props->ctx_handle = value; break; case DRM_I915_PERF_PROP_SAMPLE_OA: - props->sample_flags |= SAMPLE_OA_REPORT; + if (value) + props->sample_flags |= SAMPLE_OA_REPORT; break; case DRM_I915_PERF_PROP_OA_METRICS_SET: if (value == 0) {