| Summary: | REGRESSION: WARN_ON_ONCE(!intel_dp->lane_count) [and slow path probing dp link) | ||
|---|---|---|---|
| Product: | DRI | Reporter: | Greg White <gwhite> |
| Component: | DRM/Intel | Assignee: | Intel GFX Bugs mailing list <intel-gfx-bugs> |
| Status: | CLOSED DUPLICATE | QA Contact: | Intel GFX Bugs mailing list <intel-gfx-bugs> |
| Severity: | normal | ||
| Priority: | medium | CC: | intel-gfx-bugs |
| Version: | DRI git | ||
| Hardware: | x86-64 (AMD64) | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.
This is on a dell Precision laptop (eDP) 5510 with 4.10 pre-rc1. Note that this machine has no DP connector. Linux 4.9.0+ #122 SMP Fri Dec 16 15:09:04 EST 2016 x86_64 GNU/Linux 1.594516] WARNING: CPU: 0 PID: 68 at drivers/gpu/drm/i915/intel_dp.c:4018 intel_dp_check_link_status+0x1b9/0x1e0 [ 1.594521] WARN_ON_ONCE(!intel_dp->lane_count) [ 1.594521] Modules linked in: [ 1.594528] CPU: 0 PID: 68 Comm: kworker/u16:1 Tainted: G U 4.9.0-GTW2+ #122 [ 1.594531] Hardware name: Dell Inc. Precision 5510/0WWKNF, BIOS 1.2.16 10/07/2016 [ 1.594536] Workqueue: events_unbound async_run_entry_fn [ 1.594538] Call Trace: [ 1.594543] dump_stack+0x86/0xc1 [ 1.594545] __warn+0xcb/0xf0 [ 1.594548] warn_slowpath_fmt+0x4f/0x60 [ 1.594551] ? drm_dp_dpcd_read+0x57/0x70 [ 1.594554] intel_dp_check_link_status+0x1b9/0x1e0 [ 1.594557] intel_dp_detect+0x620/0xa10 [ 1.594559] drm_helper_probe_single_connector_modes+0x2a3/0x500 [ 1.594562] ? load_balance+0x159/0x8b0 [ 1.594566] drm_setup_crtcs+0x7b/0x9b0 [ 1.594568] ? dequeue_entity+0x236/0xbd0 [ 1.594571] ? dequeue_task_fair+0x6eb/0xaf0 [ 1.594574] drm_fb_helper_initial_config+0x4d/0x3b0 [ 1.594578] ? __switch_to+0x263/0x3c0 [ 1.594581] intel_fbdev_initial_config+0x18/0x30 [ 1.594584] async_run_entry_fn+0x37/0x150 [ 1.594588] process_one_work+0x1f3/0x450 [ 1.594592] worker_thread+0x4b/0x510 [ 1.594595] kthread+0x101/0x140 [ 1.594598] ? process_one_work+0x450/0x450 [ 1.594600] ? kthread_create_on_node+0x40/0x40 [ 1.594604] ret_from_fork+0x2a/0x40 [ 1.594608] ---[ end trace b7af2b47bfaec06e ]--- [