Messages in this thread | | | From | Larry Finger <> | Subject | Warning for driver i915 for 4.17.0-rcX | Date | Mon, 30 Apr 2018 22:36:17 -0500 |
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With kernel 4.17.0-rc3, I noted the following warning from driver i915.
kernel: ------------[ cut here ]------------ kernel: Could not determine valid watermarks for inherited state kernel: WARNING: CPU: 3 PID: 224 at drivers/gpu/drm/i915/intel_display.c:14584 intel_modeset_init+0x3be/0x1060 [i915] kernel: Modules linked in: i915(+) xhci_pci i2c_algo_bit ehci_pci xhci_hcd serio_raw drm_kms_helper ehci_hcd syscopyarea sysfillrect sysimgblt kernel: CPU: 3 PID: 224 Comm: systemd-udevd Not tainted 4.17.0-rc0-08000-g2f39cfca0161-dirty #188 kernel: Hardware name: TOSHIBA TECRA A50-A/TECRA A50-A, BIOS Version 4.50 09/29/2014 kernel: RIP: 0010:intel_modeset_init+0x3be/0x1060 [i915] kernel: RSP: 0018:ffffc9000112fab8 EFLAGS: 00010296 kernel: RAX: 0000000000000038 RBX: ffff88021dc10000 RCX: 0000000000000006 kernel: RDX: 0000000000000007 RSI: 0000000000000082 RDI: ffff88022f2d5bd0 kernel: RBP: ffff88021c8b3000 R08: 0000000000000289 R09: 0000000000000004 kernel: R10: ffffc9000112f948 R11: 0000000000000001 R12: ffff88021ef3d800 kernel: R13: 00000000ffffffea R14: 0000000000000000 R15: ffff88021dc10358 kernel: FS: 00007f830913c940(0000) GS:ffff88022f2c0000(0000) knlGS:0000000000000000 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kernel: CR2: 00007ffc91722f58 CR3: 000000021e940003 CR4: 00000000001606e0 kernel: Call Trace: kernel: i915_driver_load+0xa87/0xed0 [i915] kernel: local_pci_probe+0x42/0xa0 kernel: pci_device_probe+0x125/0x190 kernel: driver_probe_device+0x30b/0x480 kernel: __driver_attach+0xb8/0xe0 kernel: ? driver_probe_device+0x40/0x480 kernel: ? driver_probe_device+0x480/0x480 kernel: bus_for_each_dev+0x65/0x90 kernel: bus_add_driver+0x161/0x260 kernel: ? 0xffffffffa0149000 kernel: driver_register+0x57/0xc0 kernel: ? 0xffffffffa0149000 kernel: do_one_initcall+0x4e/0x18d kernel: ? kmem_cache_alloc_trace+0xfe/0x210 kernel: ? do_init_module+0x22/0x20a kernel: do_init_module+0x5b/0x20a kernel: load_module+0x18a1/0x1e20 kernel: ? SYSC_finit_module+0xb7/0xd0 kernel: SYSC_finit_module+0xb7/0xd0 kernel: do_syscall_64+0x6e/0x120 kernel: entry_SYSCALL_64_after_hwframe+0x3d/0xa2 kernel: RIP: 0033:0x7f8307f67529 kernel: RSP: 002b:00007ffc91737ab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 kernel: RAX: ffffffffffffffda RBX: 0000559b3cf6f350 RCX: 00007f8307f67529 kernel: RDX: 0000000000000000 RSI: 00007f83088cd83d RDI: 0000000000000014 kernel: RBP: 00007f83088cd83d R08: 0000000000000000 R09: 0000559b3cf44f50 kernel: R10: 0000000000000014 R11: 0000000000000246 R12: 0000000000020000 kernel: R13: 0000559b3cf634a0 R14: 0000000000000000 R15: 0000000003938700 kernel: Code: 00 f7 c6 00 00 18 00 0f 84 d7 0a 00 00 85 c9 0f 94 c1 41 88 8c 24 8d 02 00 00 e9 f6 08 00 00 48 c7 c7 b0 2f 41 a0 e8 f2 9b cd e0 kernel: ---[ end trace c0feea6402f4c999 ]---
This warning was bisected to
commit a2936e3d9a9cb2ce192455cdec3a8cfccc26b486 (refs/bisect/bad) Author: Ville Syrjälä <ville.syrjala@linux.intel.com> Date: Thu Nov 23 21:04:49 2017 +0200
drm/i915: Use drm_mode_get_hv_timing() to populate plane clip rectangle
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Thierry Reding <treding@nvidia.com>
The output of 'lspci -nn -vvv' for the gracpics device is as follows:
00:02.0 VGA compatible controller [0300]: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06) (prog-if 00 [VGA controller]) Subsystem: Toshiba America Info Systems Device [1179:0002] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 28 Region 0: Memory at e0000000 (64-bit, non-prefetchable) [size=4M] Region 2: Memory at d0000000 (64-bit, prefetchable) [size=256M] Region 4: I/O ports at 4000 [size=64] [virtual] Expansion ROM at 000c0000 [disabled] [size=128K] Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- Address: fee00018 Data: 0000 Capabilities: [d0] Power Management version 2 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [a4] PCI Advanced Features AFCap: TP+ FLR+ AFCtrl: FLR- AFStatus: TP- Kernel driver in use: i915 Kernel modules: i915
This warning does not seem to cause any problems.
Thanks,
Larry
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