* [drm-misc:for-linux-next 2/9] drivers/gpu/drm/display/drm_dp_mst_topology.c:4498:64-67: ERROR: invalid reference to the index variable of the iterator on line 4486
@ 2022-04-25 20:27 kernel test robot
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From: kernel test robot @ 2022-04-25 20:27 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 9535 bytes --]
CC: kbuild-all(a)lists.01.org
BCC: lkp(a)intel.com
CC: linux-kernel(a)vger.kernel.org
TO: Thomas Zimmermann <tzimmermann@suse.de>
CC: Lyude Paul <lyude@redhat.com>
CC: Javier Martinez Canillas <javierm@redhat.com>
CC: Alex Deucher <alexander.deucher@amd.com>
tree: git://anongit.freedesktop.org/drm/drm-misc for-linux-next
head: 644edf52b6305506ba7fd552323c1dfaa9cf6d8d
commit: da68386d9edb1f57abf886febe5c5169ebd4d2c9 [2/9] drm: Rename dp/ to display/
:::::: branch date: 11 hours ago
:::::: commit date: 11 hours ago
config: x86_64-randconfig-c022-20220425 (https://download.01.org/0day-ci/archive/20220426/202204260404.JsTUt7Ee-lkp(a)intel.com/config)
compiler: gcc-11 (Debian 11.2.0-20) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@lip6.fr>
cocci warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/display/drm_dp_mst_topology.c:4498:64-67: ERROR: invalid reference to the index variable of the iterator on line 4486
drivers/gpu/drm/display/drm_dp_mst_topology.c:5223:13-17: ERROR: invalid reference to the index variable of the iterator on line 5200
drivers/gpu/drm/display/drm_dp_mst_topology.c:5387:5-8: ERROR: invalid reference to the index variable of the iterator on line 5373
vim +4498 drivers/gpu/drm/display/drm_dp_mst_topology.c
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4447
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4448 /**
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4449 * drm_dp_atomic_release_vcpi_slots() - Release allocated vcpi slots
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4450 * @state: global atomic state
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4451 * @mgr: MST topology manager for the port
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4452 * @port: The port to release the VCPI slots from
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4453 *
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4454 * Releases any VCPI slots that have been allocated to a port in the atomic
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4455 * state. Any atomic drivers which support MST must call this function in
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4456 * their &drm_connector_helper_funcs.atomic_check() callback when the
1e55a53a28d3e52 drivers/gpu/drm/drm_dp_mst_topology.c Matt Roper 2019-02-01 4457 * connector will no longer have VCPI allocated (e.g. because its CRTC was
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4458 * removed) when it had VCPI allocated in the previous atomic state.
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4459 *
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4460 * It is OK to call this even if @port has been removed from the system.
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4461 * Additionally, it is OK to call this function multiple times on the same
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4462 * @port as needed. It is not OK however, to call this function and
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4463 * drm_dp_atomic_find_vcpi_slots() on the same @port in a single atomic check
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4464 * phase.
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4465 *
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4466 * See also:
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4467 * drm_dp_atomic_find_vcpi_slots()
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4468 * drm_dp_mst_atomic_check()
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4469 *
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4470 * Returns:
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4471 * 0 if all slots for this port were added back to
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4472 * &drm_dp_mst_topology_state.avail_slots or negative error code
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4473 */
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4474 int drm_dp_atomic_release_vcpi_slots(struct drm_atomic_state *state,
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4475 struct drm_dp_mst_topology_mgr *mgr,
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4476 struct drm_dp_mst_port *port)
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4477 {
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4478 struct drm_dp_mst_topology_state *topology_state;
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4479 struct drm_dp_vcpi_allocation *pos;
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4480 bool found = false;
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4481
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4482 topology_state = drm_atomic_get_mst_topology_state(state, mgr);
56a91c4932bd038 drivers/gpu/drm/drm_dp_mst_topology.c Ville Syrjälä 2017-07-12 4483 if (IS_ERR(topology_state))
56a91c4932bd038 drivers/gpu/drm/drm_dp_mst_topology.c Ville Syrjälä 2017-07-12 4484 return PTR_ERR(topology_state);
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4485
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 @4486 list_for_each_entry(pos, &topology_state->vcpis, next) {
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4487 if (pos->port == port) {
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4488 found = true;
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4489 break;
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4490 }
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4491 }
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4492 if (WARN_ON(!found)) {
3a08f53dcf17e7c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2021-04-23 4493 drm_err(mgr->dev, "no VCPI for [MST PORT:%p] found in mst state %p\n",
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4494 port, &topology_state->base);
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4495 return -EINVAL;
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4496 }
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4497
3a08f53dcf17e7c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2021-04-23 @4498 drm_dbg_atomic(mgr->dev, "[MST PORT:%p] VCPI %d -> 0\n", port, pos->vcpi);
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4499 if (pos->vcpi) {
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4500 drm_dp_mst_put_port_malloc(port);
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4501 pos->vcpi = 0;
7bfc1fec1af3e2f drivers/gpu/drm/drm_dp_mst_topology.c Mikita Lipski 2020-04-07 4502 pos->pbn = 0;
eceae147246749c drivers/gpu/drm/drm_dp_mst_topology.c Lyude Paul 2019-01-10 4503 }
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4504
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4505 return 0;
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4506 }
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4507 EXPORT_SYMBOL(drm_dp_atomic_release_vcpi_slots);
edb1ed1ab7d314e drivers/gpu/drm/drm_dp_mst_topology.c Pandiyan, Dhinakaran 2017-04-20 4508
:::::: The code at line 4498 was first introduced by commit
:::::: 3a08f53dcf17e7cbdc6143e88791b3a10d0fdd48 drm/dp_mst: Convert drm_dp_mst_topology.c to drm_err()/drm_dbg*()
:::::: TO: Lyude Paul <lyude@redhat.com>
:::::: CC: Lyude Paul <lyude@redhat.com>
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2022-04-25 20:27 [drm-misc:for-linux-next 2/9] drivers/gpu/drm/display/drm_dp_mst_topology.c:4498:64-67: ERROR: invalid reference to the index variable of the iterator on line 4486 kernel test robot
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