>> Sep 2 18:10:26 t44 kernel: [drm:check_crtc_state [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0) It is due to ips_enabled mismatch in crtc_state. I can't think how below patch is triggering mismatch in ips_enabled. > -----Original Message----- > From: Toralf Förster [mailto:toralf.foerster@xxxxxx] > Sent: Wednesday, September 02, 2015 1:18 PM > To: Konduru, Chandra; Roper, Matthew D; daniel.vetter@xxxxxxxx > Cc: intel-gfx > Subject: 4.1->4.2 regression : intel_display.c:12324 check_crtc_state warning > > The following commit was bisected and tested to be the first bad commit which > causes the warning as seen below at a ThinkPad T40s: > > > > commit a1b2278e4dfcd2dbea85e319ebf73a6b7b2f180b > Author: Chandra Konduru <chandra.konduru@xxxxxxxxx> > Date: Tue Apr 7 15:28:45 2015 -0700 > > drm/i915: skylake panel fitting using shared scalers > > Enabling skylake panel fitting feature using shared scalers > > v2: > -added force detach parameter for pfit disable purpose (me) > -read crtc scaler state from hw state (Daniel) > -replaced both skylake_pfit_enable and disable with skylake_pfit_update (me) > -added scaler id check to intel_pipe_config_compare (Daniel) > > v3: > -updated function header to kerneldoc format (Matt) > -dropped need_scaling checks (Matt) > > v4: > -move clearing of scaler id from commit path to check path (Matt) > -updated colorkey checks based on recent updates (me) > -squashed scaler check while enabling colorkey to here (me) > -use values in plane_state->src as regular integers (me) > -changes made not to modify state in commit path (Matt) > > v5: > -squashed helper function to update scaler users to here (Matt) > -squashed helper function to detach scaler to here (Matt, me) > -changes to align with updated scaler structures (Matt, me) > > Signed-off-by: Chandra Konduru <chandra.konduru@xxxxxxxxx> > Reviewed-by: Matt Roper <matthew.d.roper@xxxxxxxxx> > Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx> > > > > > > > From the syslog: > > Sep 2 18:10:17 t44 kernel: ------------[ cut here ]------------ > Sep 2 18:10:17 t44 kernel: WARNING: CPU: 2 PID: 1252 at > drivers/gpu/drm/i915/intel_display.c:12324 check_crtc_state+0x7fa/0xf50 > [i915]() > Sep 2 18:10:17 t44 kernel: pipe state doesn't match! > Sep 2 18:10:17 t44 kernel: Modules linked in: nf_conntrack_ipv6 nf_defrag_ipv6 > ip6table_filter ip6_tables ipt_MASQUERADE nf_nat_masquerade_ipv4 > nf_log_ipv4 nf_log_common xt_LOG xt_limit ipt_REJECT nf_reject_ipv4 > xt_recent xt_tcpudp xt_conntrack iptable_raw iptable_nat nf_conntrack_ipv4 > nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_filter ip_tables x_tables > nfsd auth_rpcgss oid_registry lockd grace ctr ccm sunrpc af_packet bridge stp llc > tun rc_dib0700_rc5 hid_generic hid_cherry usbhid hid dib7000p > dvb_usb_dib0700 dib3000mc dvb_usb dvb_core dib0070 dib7000m > dibx000_common dib0090 rc_core snd_hda_codec_generic arc4 coretemp > x86_pkg_temp_thermal kvm_intel kvm rtsx_pci_sdmmc mmc_core evdev > jitterentropy_rng hmac drbg aesni_intel aes_x86_64 glue_helper lrw gf128mul > psmouse ablk_helper cryptd atkbd pcspkr iwlmvm > Sep 2 18:10:17 t44 kernel: wmi mac80211 i915 fbcon bitblit cfbfillrect cfbimgblt > softcursor font i2c_algo_bit cfbcopyarea snd_hda_intel snd_hda_codec battery > thinkpad_acpi tpm_tis ehci_pci drm_kms_helper ac nvram snd_hda_core iwlwifi > hwmon i2c_i801 snd_pcm tpm cfg80211 drm video rtsx_pci rfkill intel_gtt > xhci_pci thermal xhci_hcd agpgart ehci_hcd button fb usbcore snd_timer > i2c_core e1000e fbdev lpc_ich snd usb_common mfd_core soundcore processor > Sep 2 18:10:17 t44 kernel: CPU: 2 PID: 1252 Comm: X Tainted: G W > 4.2.0+ #4 > Sep 2 18:10:17 t44 kernel: Hardware name: LENOVO > 20AQCTO1WW/20AQCTO1WW, BIOS GJET83WW (2.33 ) 03/09/2015 > Sep 2 18:10:17 t44 kernel: ffffffffc05f0f18 ffff88032a6ab828 ffffffff814cef01 > ffff88032a6ab870 > Sep 2 18:10:17 t44 kernel: ffff88032a6ab860 ffffffff810503b6 ffff88032fdcec00 > ffff8800ad66f800 > Sep 2 18:10:17 t44 kernel: ffff8800ad040000 ffff8800ad66fc98 > ffff8800adfeb000 ffff88032a6ab8c0 > Sep 2 18:10:17 t44 kernel: Call Trace: > Sep 2 18:10:17 t44 kernel: [<ffffffff814cef01>] dump_stack+0x44/0x55 > Sep 2 18:10:17 t44 kernel: [<ffffffff810503b6>] > warn_slowpath_common+0x86/0xc0 > Sep 2 18:10:17 t44 kernel: [<ffffffff8105043c>] warn_slowpath_fmt+0x4c/0x50 > Sep 2 18:10:17 t44 kernel: [<ffffffffc05878da>] check_crtc_state+0x7fa/0xf50 > [i915] > Sep 2 18:10:17 t44 kernel: [<ffffffffc059a21d>] > intel_modeset_check_state+0x28d/0xae0 [i915] > Sep 2 18:10:17 t44 kernel: [<ffffffffc0594906>] ? > __intel_set_mode+0x906/0xb30 [i915] > Sep 2 18:10:17 t44 kernel: [<ffffffffc0595d32>] ? > intel_modeset_compute_config+0x362/0xb60 [i915] > Sep 2 18:10:17 t44 kernel: [<ffffffffc059b68d>] > intel_crtc_set_config+0x3ed/0x5a0 [i915] > Sep 2 18:10:17 t44 kernel: [<ffffffffc029cc07>] > drm_mode_set_config_internal+0x67/0x110 [drm] > Sep 2 18:10:17 t44 kernel: [<ffffffffc02a068d>] drm_mode_setcrtc+0xdd/0x500 > [drm] > Sep 2 18:10:17 t44 kernel: [<ffffffffc02923c3>] drm_ioctl+0x363/0x680 [drm] > Sep 2 18:10:17 t44 kernel: [<ffffffffc02a05b0>] ? > drm_mode_setplane+0x1c0/0x1c0 [drm] > Sep 2 18:10:17 t44 kernel: [<ffffffffc06864a2>] ? > ieee80211_rx_irqsafe+0x32/0x50 [mac80211] > Sep 2 18:10:17 t44 kernel: [<ffffffff8117152d>] do_vfs_ioctl+0x2cd/0x4c0 > Sep 2 18:10:17 t44 kernel: [<ffffffff810d449f>] ? > __audit_syscall_entry+0xaf/0x100 > Sep 2 18:10:17 t44 kernel: [<ffffffff81001056>] ? > do_audit_syscall_entry+0x66/0x70 > Sep 2 18:10:17 t44 kernel: [<ffffffff810015b6>] ? > syscall_trace_enter_phase1+0x126/0x140 > Sep 2 18:10:17 t44 kernel: [<ffffffff81171761>] SyS_ioctl+0x41/0x70 > Sep 2 18:10:17 t44 kernel: [<ffffffff81001915>] ? > syscall_return_slowpath+0x45/0x110 > Sep 2 18:10:17 t44 kernel: [<ffffffff814d5517>] > entry_SYSCALL_64_fastpath+0x12/0x6a > Sep 2 18:10:17 t44 kernel: ---[ end trace 310af98b8519434e ]--- > Sep 2 18:10:24 t44 logger: /home/tfoerste/workspace/bin/monitor.sh: started > with int > Sep 2 18:10:24 t44 logger: /home/tfoerste/workspace/bin/monitor.sh: n=2 > choosed DP2-2 > Sep 2 18:10:26 t44 kernel: [drm:check_crtc_state [i915]] *ERROR* mismatch in > ips_enabled (expected 1, found 0) > Sep 2 18:10:26 t44 kernel: ------------[ cut here ]------------ > > > -- > Toralf, pgp key: 872AE508 0076E94E _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
