From: kernel test robot <lkp@intel.com>
To: oe-kbuild@lists.linux.dev
Cc: lkp@intel.com
Subject: [linux-next:master 3549/14737] drivers/gpu/drm/i915/display/tests/intel_dp_link_test.c:463:28: sparse: sparse: not a function get_max_limits
Date: Thu, 13 Aug 2026 15:46:05 +0800 [thread overview]
Message-ID: <202608131516.HWw20vIE-lkp@intel.com> (raw)
::::::
:::::: Manual check reason: "low confidence static check warning: drivers/gpu/drm/i915/display/tests/intel_dp_link_test.c:463:28: sparse: sparse: not a function get_max_limits"
::::::
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: Imre Deak <imre.deak@intel.com>
CC: "Michał Grzelak" <michal.grzelak@intel.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 28d012efb4327f9c75d5e042a7c91e9a542efa98
commit: 3d0e60d75172265d5e4dff9b148e4adf5fd561c9 [3549/14737] drm/i915/kunit: DP link: add update config tests
:::::: branch date: 14 hours ago
:::::: commit date: 5 weeks ago
config: i386-randconfig-063-20260812 (https://download.01.org/0day-ci/archive/20260813/202608131516.HWw20vIE-lkp@intel.com/config)
compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211)
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260813/202608131516.HWw20vIE-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202608131516.HWw20vIE-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
drivers/gpu/drm/i915/display/tests/intel_dp_link_test.c:274:24: sparse: sparse: not a function iter_start
drivers/gpu/drm/i915/display/tests/intel_dp_link_test.c:286:22: sparse: sparse: not a function iter_end
drivers/gpu/drm/i915/display/tests/intel_dp_link_test.c:297:20: sparse: sparse: not a function update
>> drivers/gpu/drm/i915/display/tests/intel_dp_link_test.c:463:28: sparse: sparse: not a function get_max_limits
>> drivers/gpu/drm/i915/display/tests/intel_dp_link_test.c:464:28: sparse: sparse: not a function set_max_limits
drivers/gpu/drm/i915/display/tests/intel_dp_link_test.c:466:24: sparse: sparse: not a function iter_start
drivers/gpu/drm/i915/display/tests/intel_dp_link_test.c:505:22: sparse: sparse: not a function iter_end
>> drivers/gpu/drm/i915/display/tests/intel_dp_link_test.c:509:31: sparse: sparse: not a function get_max_bw_config
drivers/gpu/drm/i915/display/tests/intel_dp_link_test.c:513:9: sparse: sparse: not a function set_max_limits
drivers/gpu/drm/i915/display/tests/intel_dp_link_test.c:595:41: sparse: sparse: not a function set_max_limits
drivers/gpu/drm/i915/display/tests/intel_dp_link_test.c:617:42: sparse: sparse: not a function update
>> drivers/gpu/drm/i915/display/tests/intel_dp_link_test.c:677:17: sparse: sparse: not a function disable_config
drivers/gpu/drm/i915/display/tests/intel_dp_link_test.c:1082:59: sparse: sparse: not a function init
drivers/gpu/drm/i915/display/tests/intel_dp_link_test.c:1093:36: sparse: sparse: not a function cleanup
vim +463 drivers/gpu/drm/i915/display/tests/intel_dp_link_test.c
3d0e60d7517226 Imre Deak 2026-07-07 443
3d0e60d7517226 Imre Deak 2026-07-07 444 static void
3d0e60d7517226 Imre Deak 2026-07-07 445 verify_link_caps_for_order(const struct test_config_table *expected_table,
3d0e60d7517226 Imre Deak 2026-07-07 446 struct intel_dp_link_caps *link_caps,
3d0e60d7517226 Imre Deak 2026-07-07 447 struct intel_dp_link_caps_order config_order,
3d0e60d7517226 Imre Deak 2026-07-07 448 const struct intel_dp_link_config *max_limits)
3d0e60d7517226 Imre Deak 2026-07-07 449 {
3d0e60d7517226 Imre Deak 2026-07-07 450 struct kunit *test = expected_table->test;
3d0e60d7517226 Imre Deak 2026-07-07 451 struct test_ctx *ctx = test->priv;
3d0e60d7517226 Imre Deak 2026-07-07 452 const struct intel_dp_link_caps_test_ops *ops =
3d0e60d7517226 Imre Deak 2026-07-07 453 ctx->link_caps_ops;
3d0e60d7517226 Imre Deak 2026-07-07 454 struct intel_dp_link_config expected_max_bw_config = {};
3d0e60d7517226 Imre Deak 2026-07-07 455 struct intel_dp_link_config actual_max_bw_config;
3d0e60d7517226 Imre Deak 2026-07-07 456 struct intel_dp_link_config last_config = {};
3d0e60d7517226 Imre Deak 2026-07-07 457 struct intel_dp_link_config old_max_limits;
3d0e60d7517226 Imre Deak 2026-07-07 458 struct intel_dp_link_config iter_config;
3d0e60d7517226 Imre Deak 2026-07-07 459 struct intel_dp_link_caps_iter iter;
3d0e60d7517226 Imre Deak 2026-07-07 460 int num_actual_configs = 0;
3d0e60d7517226 Imre Deak 2026-07-07 461 int max_bw = 0;
3d0e60d7517226 Imre Deak 2026-07-07 462
3d0e60d7517226 Imre Deak 2026-07-07 @463 ops->get_max_limits(link_caps, &old_max_limits);
3d0e60d7517226 Imre Deak 2026-07-07 @464 ops->set_max_limits(link_caps, max_limits);
3d0e60d7517226 Imre Deak 2026-07-07 465
3d0e60d7517226 Imre Deak 2026-07-07 466 ops->iter_start(&iter, link_caps, config_order, INTEL_DP_LINK_CAPS_FILTER_ALL);
3d0e60d7517226 Imre Deak 2026-07-07 467 for_each_dp_link_config(&iter, &iter_config) {
3d0e60d7517226 Imre Deak 2026-07-07 468 int bw;
3d0e60d7517226 Imre Deak 2026-07-07 469
3d0e60d7517226 Imre Deak 2026-07-07 470 KUNIT_EXPECT_LE(test, iter_config.rate, max_limits->rate);
3d0e60d7517226 Imre Deak 2026-07-07 471 KUNIT_EXPECT_LE(test, iter_config.lane_count, max_limits->lane_count);
3d0e60d7517226 Imre Deak 2026-07-07 472
3d0e60d7517226 Imre Deak 2026-07-07 473 num_actual_configs++;
3d0e60d7517226 Imre Deak 2026-07-07 474
3d0e60d7517226 Imre Deak 2026-07-07 475 /*
3d0e60d7517226 Imre Deak 2026-07-07 476 * Verify the config's rate/lane-count values and its ordering relative
3d0e60d7517226 Imre Deak 2026-07-07 477 * to the previous config.
3d0e60d7517226 Imre Deak 2026-07-07 478 */
3d0e60d7517226 Imre Deak 2026-07-07 479 if (last_config.rate)
3d0e60d7517226 Imre Deak 2026-07-07 480 verify_config_order(test, config_order, &last_config, &iter_config);
3d0e60d7517226 Imre Deak 2026-07-07 481 last_config = iter_config;
3d0e60d7517226 Imre Deak 2026-07-07 482
3d0e60d7517226 Imre Deak 2026-07-07 483 KUNIT_EXPECT_TRUE(test, has_rate(&expected_table->rates,
3d0e60d7517226 Imre Deak 2026-07-07 484 iter_config.rate));
3d0e60d7517226 Imre Deak 2026-07-07 485 KUNIT_EXPECT_LE(test, iter_config.lane_count,
3d0e60d7517226 Imre Deak 2026-07-07 486 expected_table->max_lane_count);
3d0e60d7517226 Imre Deak 2026-07-07 487 KUNIT_EXPECT_TRUE(test, is_power_of_2(iter_config.lane_count));
3d0e60d7517226 Imre Deak 2026-07-07 488
3d0e60d7517226 Imre Deak 2026-07-07 489 /* Verify the config's disabled state */
3d0e60d7517226 Imre Deak 2026-07-07 490 KUNIT_EXPECT_FALSE(test, has_config(&expected_table->disabled_configs,
3d0e60d7517226 Imre Deak 2026-07-07 491 &iter_config));
3d0e60d7517226 Imre Deak 2026-07-07 492
3d0e60d7517226 Imre Deak 2026-07-07 493 /*
3d0e60d7517226 Imre Deak 2026-07-07 494 * Update the max limits for allowed configs, verified at the
3d0e60d7517226 Imre Deak 2026-07-07 495 * end for the whole config table.
3d0e60d7517226 Imre Deak 2026-07-07 496 */
3d0e60d7517226 Imre Deak 2026-07-07 497
3d0e60d7517226 Imre Deak 2026-07-07 498 bw = drm_dp_max_dprx_data_rate(iter_config.rate, iter_config.lane_count);
3d0e60d7517226 Imre Deak 2026-07-07 499 if (bw > max_bw ||
3d0e60d7517226 Imre Deak 2026-07-07 500 (bw == max_bw && iter_config.rate > expected_max_bw_config.rate)) {
3d0e60d7517226 Imre Deak 2026-07-07 501 max_bw = bw;
3d0e60d7517226 Imre Deak 2026-07-07 502 expected_max_bw_config = iter_config;
3d0e60d7517226 Imre Deak 2026-07-07 503 }
3d0e60d7517226 Imre Deak 2026-07-07 504 }
3d0e60d7517226 Imre Deak 2026-07-07 505 ops->iter_end(&iter);
3d0e60d7517226 Imre Deak 2026-07-07 506
3d0e60d7517226 Imre Deak 2026-07-07 507 KUNIT_EXPECT_EQ(test, num_actual_configs, expected_num_configs(expected_table, max_limits));
3d0e60d7517226 Imre Deak 2026-07-07 508
3d0e60d7517226 Imre Deak 2026-07-07 @509 ops->get_max_bw_config(link_caps, &actual_max_bw_config);
3d0e60d7517226 Imre Deak 2026-07-07 510 KUNIT_EXPECT_TRUE(test, link_configs_match(&expected_max_bw_config,
3d0e60d7517226 Imre Deak 2026-07-07 511 &actual_max_bw_config));
3d0e60d7517226 Imre Deak 2026-07-07 512
3d0e60d7517226 Imre Deak 2026-07-07 513 KUNIT_ASSERT_TRUE(test, ops->set_max_limits(link_caps, &old_max_limits));
3d0e60d7517226 Imre Deak 2026-07-07 514 }
3d0e60d7517226 Imre Deak 2026-07-07 515
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-08-13 7:46 UTC|newest]
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