drm/i915/perf: Reverse a ternary to make sparse happy

Avoid

drivers/gpu/drm/i915/i915_perf.c:2442:85: warning: dubious: x | !y

simply by inverting the predicate and reversing the ternary.

v2: Move the long lines into their own function so there is no confusion
on operator precedence.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191101192116.12647-1-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index a8c2318..2c380ab 100644 (file)
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -2428,6 +2428,13 @@ static int gen8_enable_metric_set(struct i915_perf_stream *stream)
        return emit_oa_config(stream, oa_config, oa_context(stream));
 }
 
+static u32 oag_report_ctx_switches(const struct i915_perf_stream *stream)
+{
+       return _MASKED_FIELD(GEN12_OAG_OA_DEBUG_DISABLE_CTX_SWITCH_REPORTS,
+                            (stream->sample_flags & SAMPLE_OA_REPORT) ?
+                            0 : GEN12_OAG_OA_DEBUG_DISABLE_CTX_SWITCH_REPORTS);
+}
+
 static int gen12_enable_metric_set(struct i915_perf_stream *stream)
 {
        struct intel_uncore *uncore = stream->uncore;
@@ -2441,12 +2448,10 @@ static int gen12_enable_metric_set(struct i915_perf_stream *stream)
                           _MASKED_BIT_ENABLE(GEN12_OAG_OA_DEBUG_DISABLE_CLK_RATIO_REPORTS |
                                              GEN12_OAG_OA_DEBUG_INCLUDE_CLK_RATIO) |
                           /*
-                           * If the user didn't require OA reports, instruct the
-                           * hardware not to emit ctx switch reports.
+                           * If the user didn't require OA reports, instruct
+                           * the hardware not to emit ctx switch reports.
                            */
-                          !(stream->sample_flags & SAMPLE_OA_REPORT) ?
-                          _MASKED_BIT_ENABLE(GEN12_OAG_OA_DEBUG_DISABLE_CTX_SWITCH_REPORTS) :
-                          _MASKED_BIT_DISABLE(GEN12_OAG_OA_DEBUG_DISABLE_CTX_SWITCH_REPORTS));
+                          oag_report_ctx_switches(stream));
 
        intel_uncore_write(uncore, GEN12_OAG_OAGLBCTXCTRL, periodic ?
                           (GEN12_OAG_OAGLBCTXCTRL_COUNTER_RESUME |