[igt-dev] [PATCH i-g-t v2] tests/i915_pm_rps: Fix test after silent conflict

[Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>]

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

A silent conflict sneaked in as I was merging
d86ca7e17b58 ("tests/i915_pm_rps: Exercise sysfs thresholds") in a way
that igt_sysfs_set_u32 has became a function returning void.

Assert is now built-in so drop it from the test.

v2:
 * Fix invalid value test.
 * Assert new values after write while at it.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Fixes: d86ca7e17b58 ("tests/i915_pm_rps: Exercise sysfs thresholds")
Reference: 54dc25efaf10 ("lib/igt_sysfs: add asserting helpers for read/write operations")
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Lukasz Laguna <lukasz.laguna@intel.com>
Cc: Kamil Konieczny <kamil.konieczny@linux.intel.com>
---
 tests/i915/i915_pm_rps.c | 34 ++++++++++++++++++++++++++++------
 1 file changed, 28 insertions(+), 6 deletions(-)

diff --git a/tests/i915/i915_pm_rps.c b/tests/i915/i915_pm_rps.c
index 68bb99d62c19..15c74cc703c2 100644
--- a/tests/i915/i915_pm_rps.c
+++ b/tests/i915/i915_pm_rps.c
@@ -988,6 +988,28 @@ static igt_spin_t *spin_sync_gt(int i915, uint64_t ahnd, unsigned int gt,
 	return __igt_sync_spin(i915, ahnd, *ctx, &e);
 }
 
+static void sysfs_fail_set_u32(int dir, const char *attr, uint32_t set)
+{
+	u32 old, new;
+	bool ret;
+
+	old = igt_sysfs_get_u32(dir, attr);
+	ret = __igt_sysfs_set_u32(dir, attr, set);
+	igt_assert_eq(ret, false);
+	new = igt_sysfs_get_u32(dir, attr);
+	igt_assert_eq(old, new);
+}
+
+static void sysfs_set_u32(int dir, const char *attr, uint32_t set)
+{
+	u32 new;
+
+	igt_sysfs_set_u32(dir, attr, set);
+
+	new = igt_sysfs_get_u32(dir, attr);
+	igt_assert_eq(set, new);
+}
+
 #define TEST_IDLE 0x1
 #define TEST_PARK 0x2
 static void test_thresholds(int i915, unsigned int gt, unsigned int flags)
@@ -1010,8 +1032,8 @@ static void test_thresholds(int i915, unsigned int gt, unsigned int flags)
 	igt_require(def_up && def_down);
 
 	/* Check invalid percentages are rejected */
-	igt_assert_eq(igt_sysfs_set_u32(sysfs, "rps_up_threshold_pct", 101), false);
-	igt_assert_eq(igt_sysfs_set_u32(sysfs, "rps_down_threshold_pct", 101), false);
+	sysfs_fail_set_u32(sysfs, "rps_up_threshold_pct", 101);
+	sysfs_fail_set_u32(sysfs, "rps_down_threshold_pct", 101);
 
 	/*
 	 * Invent some random up-down thresholds, but always include 0 and 100
@@ -1034,8 +1056,8 @@ static void test_thresholds(int i915, unsigned int gt, unsigned int flags)
 	/* Exercise the thresholds with a GPU load to trigger park/unpark etc */
 	for (i = 0; i < points; i++) {
 		igt_info("Testing thresholds up %u%% and down %u%%...\n", ta[i], tb[i]);
-		igt_assert_eq(igt_sysfs_set_u32(sysfs, "rps_up_threshold_pct", ta[i]), true);
-		igt_assert_eq(igt_sysfs_set_u32(sysfs, "rps_down_threshold_pct", tb[i]), true);
+		sysfs_set_u32(sysfs, "rps_up_threshold_pct", ta[i]);
+		sysfs_set_u32(sysfs, "rps_down_threshold_pct", tb[i]);
 
 		if (flags & TEST_IDLE) {
 			gem_quiescent_gpu(i915);
@@ -1069,8 +1091,8 @@ static void test_thresholds(int i915, unsigned int gt, unsigned int flags)
 	gem_quiescent_gpu(i915);
 
 	/* Restore defaults */
-	igt_assert_eq(igt_sysfs_set_u32(sysfs, "rps_up_threshold_pct", def_up), true);
-	igt_assert_eq(igt_sysfs_set_u32(sysfs, "rps_down_threshold_pct", def_down), true);
+	sysfs_set_u32(sysfs, "rps_up_threshold_pct", def_up);
+	sysfs_set_u32(sysfs, "rps_down_threshold_pct", def_down);
 
 	free(ta);
 	free(tb);
-- 
2.39.2