drivers/gpu/drm/i915/display/intel_display.c:7532:3: warning: unannotated fall-through between switch labels

From: kernel test robot
Date: Wed Jun 01 2022 - 05:26:03 EST

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tree: https://github.com/intel-lab-lkp/linux/commits/UPDATE-20220601-122646/Arun-R-Murthy/drm-i915-Support-Async-Flip-on-Linear-buffers/20220426-200801
head: cc1daa161e85e6157fff3455b5aa0b2712730b3e
commit: cc1daa161e85e6157fff3455b5aa0b2712730b3e drm/i915: Support Async Flip on Linear buffers
date: 5 hours ago
config: x86_64-randconfig-a005 (https://download.01.org/0day-ci/archive/20220601/202206011737.wbgAyYbB-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c825abd6b0198fb088d9752f556a70705bc99dfd)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/cc1daa161e85e6157fff3455b5aa0b2712730b3e
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review UPDATE-20220601-122646/Arun-R-Murthy/drm-i915-Support-Async-Flip-on-Linear-buffers/20220426-200801
git checkout cc1daa161e85e6157fff3455b5aa0b2712730b3e
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/i915/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/i915/display/intel_display.c:7532:3: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
case I915_FORMAT_MOD_X_TILED:
^
drivers/gpu/drm/i915/display/intel_display.c:7532:3: note: insert 'break;' to avoid fall-through
case I915_FORMAT_MOD_X_TILED:
^
break;
1 warning generated.

vim +7532 drivers/gpu/drm/i915/display/intel_display.c

b0b2bed2a1305c Ville Syrjälä 2022-02-14 7458
b0b2bed2a1305c Ville Syrjälä 2022-02-14 7459 static int intel_async_flip_check_hw(struct intel_atomic_state *state, struct intel_crtc *crtc)
30ff93af9e19db Karthik B S 2020-09-21 7460 {
30ff93af9e19db Karthik B S 2020-09-21 7461 struct drm_i915_private *i915 = to_i915(state->base.dev);
30ff93af9e19db Karthik B S 2020-09-21 7462 const struct intel_crtc_state *old_crtc_state, *new_crtc_state;
30ff93af9e19db Karthik B S 2020-09-21 7463 const struct intel_plane_state *new_plane_state, *old_plane_state;
30ff93af9e19db Karthik B S 2020-09-21 7464 struct intel_plane *plane;
30ff93af9e19db Karthik B S 2020-09-21 7465 int i;
30ff93af9e19db Karthik B S 2020-09-21 7466
0826edb6a5e5b3 José Roberto de Souza 2021-10-29 7467 old_crtc_state = intel_atomic_get_old_crtc_state(state, crtc);
0826edb6a5e5b3 José Roberto de Souza 2021-10-29 7468 new_crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
0826edb6a5e5b3 José Roberto de Souza 2021-10-29 7469
b0b2bed2a1305c Ville Syrjälä 2022-02-14 7470 if (!new_crtc_state->uapi.async_flip)
b0b2bed2a1305c Ville Syrjälä 2022-02-14 7471 return 0;
b0b2bed2a1305c Ville Syrjälä 2022-02-14 7472
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7473 if (!new_crtc_state->hw.active) {
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7474 drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7475 "[CRTC:%d:%s] not active\n",
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7476 crtc->base.base.id, crtc->base.name);
30ff93af9e19db Karthik B S 2020-09-21 7477 return -EINVAL;
30ff93af9e19db Karthik B S 2020-09-21 7478 }
30ff93af9e19db Karthik B S 2020-09-21 7479
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7480 if (intel_crtc_needs_modeset(new_crtc_state)) {
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7481 drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7482 "[CRTC:%d:%s] modeset required\n",
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7483 crtc->base.base.id, crtc->base.name);
30ff93af9e19db Karthik B S 2020-09-21 7484 return -EINVAL;
30ff93af9e19db Karthik B S 2020-09-21 7485 }
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7486
30ff93af9e19db Karthik B S 2020-09-21 7487 if (old_crtc_state->active_planes != new_crtc_state->active_planes) {
30ff93af9e19db Karthik B S 2020-09-21 7488 drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7489 "[CRTC:%d:%s] Active planes cannot be in async flip\n",
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7490 crtc->base.base.id, crtc->base.name);
30ff93af9e19db Karthik B S 2020-09-21 7491 return -EINVAL;
30ff93af9e19db Karthik B S 2020-09-21 7492 }
30ff93af9e19db Karthik B S 2020-09-21 7493
30ff93af9e19db Karthik B S 2020-09-21 7494 for_each_oldnew_intel_plane_in_state(state, plane, old_plane_state,
30ff93af9e19db Karthik B S 2020-09-21 7495 new_plane_state, i) {
0826edb6a5e5b3 José Roberto de Souza 2021-10-29 7496 if (plane->pipe != crtc->pipe)
0826edb6a5e5b3 José Roberto de Souza 2021-10-29 7497 continue;
0826edb6a5e5b3 José Roberto de Souza 2021-10-29 7498
30ff93af9e19db Karthik B S 2020-09-21 7499 /*
2e08437160d1e8 Ville Syrjälä 2022-02-14 7500 * Only async flip capable planes should be in the state
2e08437160d1e8 Ville Syrjälä 2022-02-14 7501 * if we're really about to ask the hardware to perform
2e08437160d1e8 Ville Syrjälä 2022-02-14 7502 * an async flip. We should never get this far otherwise.
30ff93af9e19db Karthik B S 2020-09-21 7503 */
2e08437160d1e8 Ville Syrjälä 2022-02-14 7504 if (drm_WARN_ON(&i915->drm,
2e08437160d1e8 Ville Syrjälä 2022-02-14 7505 new_crtc_state->do_async_flip && !plane->async_flip))
30ff93af9e19db Karthik B S 2020-09-21 7506 return -EINVAL;
30ff93af9e19db Karthik B S 2020-09-21 7507
2e08437160d1e8 Ville Syrjälä 2022-02-14 7508 /*
2e08437160d1e8 Ville Syrjälä 2022-02-14 7509 * Only check async flip capable planes other planes
2e08437160d1e8 Ville Syrjälä 2022-02-14 7510 * may be involved in the initial commit due to
2e08437160d1e8 Ville Syrjälä 2022-02-14 7511 * the wm0/ddb optimization.
2e08437160d1e8 Ville Syrjälä 2022-02-14 7512 *
2e08437160d1e8 Ville Syrjälä 2022-02-14 7513 * TODO maybe should track which planes actually
2e08437160d1e8 Ville Syrjälä 2022-02-14 7514 * were requested to do the async flip...
2e08437160d1e8 Ville Syrjälä 2022-02-14 7515 */
2e08437160d1e8 Ville Syrjälä 2022-02-14 7516 if (!plane->async_flip)
2e08437160d1e8 Ville Syrjälä 2022-02-14 7517 continue;
2e08437160d1e8 Ville Syrjälä 2022-02-14 7518
30ff93af9e19db Karthik B S 2020-09-21 7519 /*
30ff93af9e19db Karthik B S 2020-09-21 7520 * FIXME: This check is kept generic for all platforms.
244dba4cb59637 Lucas De Marchi 2021-07-28 7521 * Need to verify this for all gen9 platforms to enable
30ff93af9e19db Karthik B S 2020-09-21 7522 * this selectively if required.
30ff93af9e19db Karthik B S 2020-09-21 7523 */
30ff93af9e19db Karthik B S 2020-09-21 7524 switch (new_plane_state->hw.fb->modifier) {
cc1daa161e85e6 Arun R Murthy 2022-06-01 7525 case DRM_FORMAT_MOD_LINEAR:
cc1daa161e85e6 Arun R Murthy 2022-06-01 7526 if (DISPLAY_VER(i915) < 12) {
cc1daa161e85e6 Arun R Murthy 2022-06-01 7527 drm_dbg_kms(&i915->drm,
cc1daa161e85e6 Arun R Murthy 2022-06-01 7528 "[PLANE:%d:%s] Modifier does not support async flips\n",
cc1daa161e85e6 Arun R Murthy 2022-06-01 7529 plane->base.base.id, plane->base.name);
cc1daa161e85e6 Arun R Murthy 2022-06-01 7530 return -EINVAL;
cc1daa161e85e6 Arun R Murthy 2022-06-01 7531 }
30ff93af9e19db Karthik B S 2020-09-21 @7532 case I915_FORMAT_MOD_X_TILED:
30ff93af9e19db Karthik B S 2020-09-21 7533 case I915_FORMAT_MOD_Y_TILED:
30ff93af9e19db Karthik B S 2020-09-21 7534 case I915_FORMAT_MOD_Yf_TILED:
072ce4164f973b Stanislav Lisovskiy 2022-01-18 7535 case I915_FORMAT_MOD_4_TILED:
30ff93af9e19db Karthik B S 2020-09-21 7536 break;
30ff93af9e19db Karthik B S 2020-09-21 7537 default:
30ff93af9e19db Karthik B S 2020-09-21 7538 drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7539 "[PLANE:%d:%s] Modifier does not support async flips\n",
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7540 plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S 2020-09-21 7541 return -EINVAL;
30ff93af9e19db Karthik B S 2020-09-21 7542 }
30ff93af9e19db Karthik B S 2020-09-21 7543
aaec72ee90bccc Ville Syrjälä 2021-10-18 7544 if (new_plane_state->hw.fb->format->num_planes > 1) {
aaec72ee90bccc Ville Syrjälä 2021-10-18 7545 drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7546 "[PLANE:%d:%s] Planar formats do not support async flips\n",
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7547 plane->base.base.id, plane->base.name);
aaec72ee90bccc Ville Syrjälä 2021-10-18 7548 return -EINVAL;
aaec72ee90bccc Ville Syrjälä 2021-10-18 7549 }
aaec72ee90bccc Ville Syrjälä 2021-10-18 7550
be6c1dd5ac074d Imre Deak 2021-10-27 7551 if (old_plane_state->view.color_plane[0].mapping_stride !=
be6c1dd5ac074d Imre Deak 2021-10-27 7552 new_plane_state->view.color_plane[0].mapping_stride) {
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7553 drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7554 "[PLANE:%d:%s] Stride cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7555 plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S 2020-09-21 7556 return -EINVAL;
30ff93af9e19db Karthik B S 2020-09-21 7557 }
30ff93af9e19db Karthik B S 2020-09-21 7558
30ff93af9e19db Karthik B S 2020-09-21 7559 if (old_plane_state->hw.fb->modifier !=
30ff93af9e19db Karthik B S 2020-09-21 7560 new_plane_state->hw.fb->modifier) {
30ff93af9e19db Karthik B S 2020-09-21 7561 drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7562 "[PLANE:%d:%s] Modifier cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7563 plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S 2020-09-21 7564 return -EINVAL;
30ff93af9e19db Karthik B S 2020-09-21 7565 }
30ff93af9e19db Karthik B S 2020-09-21 7566
30ff93af9e19db Karthik B S 2020-09-21 7567 if (old_plane_state->hw.fb->format !=
30ff93af9e19db Karthik B S 2020-09-21 7568 new_plane_state->hw.fb->format) {
30ff93af9e19db Karthik B S 2020-09-21 7569 drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7570 "[PLANE:%d:%s] Pixel format cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7571 plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S 2020-09-21 7572 return -EINVAL;
30ff93af9e19db Karthik B S 2020-09-21 7573 }
30ff93af9e19db Karthik B S 2020-09-21 7574
30ff93af9e19db Karthik B S 2020-09-21 7575 if (old_plane_state->hw.rotation !=
30ff93af9e19db Karthik B S 2020-09-21 7576 new_plane_state->hw.rotation) {
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7577 drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7578 "[PLANE:%d:%s] Rotation cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7579 plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S 2020-09-21 7580 return -EINVAL;
30ff93af9e19db Karthik B S 2020-09-21 7581 }
30ff93af9e19db Karthik B S 2020-09-21 7582
30ff93af9e19db Karthik B S 2020-09-21 7583 if (!drm_rect_equals(&old_plane_state->uapi.src, &new_plane_state->uapi.src) ||
30ff93af9e19db Karthik B S 2020-09-21 7584 !drm_rect_equals(&old_plane_state->uapi.dst, &new_plane_state->uapi.dst)) {
30ff93af9e19db Karthik B S 2020-09-21 7585 drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7586 "[PLANE:%d:%s] Size/co-ordinates cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7587 plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S 2020-09-21 7588 return -EINVAL;
30ff93af9e19db Karthik B S 2020-09-21 7589 }
30ff93af9e19db Karthik B S 2020-09-21 7590
30ff93af9e19db Karthik B S 2020-09-21 7591 if (old_plane_state->hw.alpha != new_plane_state->hw.alpha) {
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7592 drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7593 "[PLANES:%d:%s] Alpha value cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7594 plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S 2020-09-21 7595 return -EINVAL;
30ff93af9e19db Karthik B S 2020-09-21 7596 }
30ff93af9e19db Karthik B S 2020-09-21 7597
30ff93af9e19db Karthik B S 2020-09-21 7598 if (old_plane_state->hw.pixel_blend_mode !=
30ff93af9e19db Karthik B S 2020-09-21 7599 new_plane_state->hw.pixel_blend_mode) {
30ff93af9e19db Karthik B S 2020-09-21 7600 drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7601 "[PLANE:%d:%s] Pixel blend mode cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7602 plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S 2020-09-21 7603 return -EINVAL;
30ff93af9e19db Karthik B S 2020-09-21 7604 }
30ff93af9e19db Karthik B S 2020-09-21 7605
30ff93af9e19db Karthik B S 2020-09-21 7606 if (old_plane_state->hw.color_encoding != new_plane_state->hw.color_encoding) {
30ff93af9e19db Karthik B S 2020-09-21 7607 drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7608 "[PLANE:%d:%s] Color encoding cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7609 plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S 2020-09-21 7610 return -EINVAL;
30ff93af9e19db Karthik B S 2020-09-21 7611 }
30ff93af9e19db Karthik B S 2020-09-21 7612
30ff93af9e19db Karthik B S 2020-09-21 7613 if (old_plane_state->hw.color_range != new_plane_state->hw.color_range) {
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7614 drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7615 "[PLANE:%d:%s] Color range cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7616 plane->base.base.id, plane->base.name);
30ff93af9e19db Karthik B S 2020-09-21 7617 return -EINVAL;
30ff93af9e19db Karthik B S 2020-09-21 7618 }
ef6ba31dd38405 Anshuman Gupta 2021-09-24 7619
ef6ba31dd38405 Anshuman Gupta 2021-09-24 7620 /* plane decryption is allow to change only in synchronous flips */
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7621 if (old_plane_state->decrypt != new_plane_state->decrypt) {
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7622 drm_dbg_kms(&i915->drm,
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7623 "[PLANE:%d:%s] Decryption cannot be changed in async flip\n",
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7624 plane->base.base.id, plane->base.name);
ef6ba31dd38405 Anshuman Gupta 2021-09-24 7625 return -EINVAL;
30ff93af9e19db Karthik B S 2020-09-21 7626 }
6b4e414ce8dab7 Ville Syrjälä 2022-02-14 7627 }
30ff93af9e19db Karthik B S 2020-09-21 7628
30ff93af9e19db Karthik B S 2020-09-21 7629 return 0;
30ff93af9e19db Karthik B S 2020-09-21 7630 }
30ff93af9e19db Karthik B S 2020-09-21 7631

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