<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="Generator" content="Microsoft Word 14 (filtered medium)"> <style></style> </head> <body lang="EN-US" link="blue" vlink="purple"> <div class="WordSection1"> Hi,<o:p></o:p> I have been seeing below warning on skylake system on which dmc fw isn’t placed.<o:p></o:p> Is below warning expected? If so what is it conveying?<o:p></o:p> <o:p> </o:p> -Chandra<o:p></o:p> <o:p> </o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475013] WARNING: CPU: 0 PID: 1453 at /home/cmkondur/otc/otc_kernel/drivers/gpu/drm/i915/intel_runtime_pm.c:532 skl_set_power_well+0x74b/0xab0 [i915]()<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475014] DC6 already programmed to be disabled.<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475015] Modules linked in: i915(OE) drm_kms_helper(OE) drm(OE) video(E) i2c_algo_bit(E) xhci_plat_hcd(E) snd_hda_intel(E) snd_hda_codec(E) snd_hda_core(E) snd_hwdep(E) snd_pcm_oss(E) snd_mixer_oss(E) snd_pcm(E) dwc3(E) udc_core(E) snd_seq_midi(E) snd_rawmidi(E) intel_rapl(E) snd_seq_midi_event(E) iosf_mbi(E) x86_pkg_temp_thermal(E) coretemp(E) snd_seq(E) kvm_intel(E) kvm(E) crct10dif_pclmul(E) crc32_pclmul(E) rfcomm(E) bnep(E) ghash_clmulni_intel(E) bluetooth(E) snd_timer(E) snd_seq_device(E) aesni_intel(E) ablk_helper(E) cryptd(E) lrw(E) gf128mul(E) glue_helper(E) aes_x86_64(E) asix(E) usbnet(E) mii(E) snd(E) mac_hid(E) serio_raw(E) nls_iso8859_1(E) soundcore(E) dwc3_pci(E) parport_pc(E) ppdev(E) lp(E) parport(E) hid_generic(E) usbhid(E) hid(E) e1000e(E) ptp(E) ahci(E) psmouse(E) pps_core(E) sdhci_pci(E) sdhci(E) libahci(E)<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475041] CPU: 0 PID: 1453 Comm: kms_nv12 Tainted: G W OE 4.1.0-rc2+ #2<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475042] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.X075.R04.1503240732 03/24/2015<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475043] 0000000000000214 ffff880075547a68 ffffffff817dc684 0000000000000007<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475045] ffff880075547ab8 ffff880075547aa8 ffffffff8107c557 000000003000000f<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475047] ffff8800755e0000 0000000040000000 ffffffffc05897f0 000000003000000f<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475048] Call Trace:<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475050] [<ffffffff817dc684>] dump_stack+0x45/0x57<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475052] [<ffffffff8107c557>] warn_slowpath_common+0x97/0xe0<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475054] [<ffffffff8107c656>] warn_slowpath_fmt+0x46/0x50<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475062] [<ffffffffc04ad40b>] skl_set_power_well+0x74b/0xab0 [i915]<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475071] [<ffffffffc04ad7a3>] skl_power_well_enable+0x13/0x20 [i915]<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475079] [<ffffffffc04ada6e>] intel_display_power_get+0x9e/0xf0 [i915]<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475095] [<ffffffffc0536c51>] intel_dp_detect+0xb1/0x510 [i915]<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475099] [<ffffffffc047dc10>] drm_helper_probe_single_connector_modes_merge_bits+0x200/0x4f0 [drm_kms_helper]<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475108] [<ffffffffc0400953>] ? _object_find+0x93/0xd0 [drm]<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475112] [<ffffffffc047df33>] drm_helper_probe_single_connector_modes+0x13/0x20 [drm_kms_helper]<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475121] [<ffffffffc0404b9f>] drm_mode_getconnector+0x3af/0x400 [drm]<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475124] [<ffffffff817d8350>] ? printk+0x46/0x48<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475130] [<ffffffffc03f5cb2>] drm_ioctl+0x362/0x690 [drm]<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475139] [<ffffffffc04047f0>] ? drm_mode_getcrtc+0x150/0x150 [drm]<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475141] [<ffffffff81211406>] do_vfs_ioctl+0x86/0x530<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475144] [<ffffffff8121e7c4>] ? mntput+0x24/0x40<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475146] [<ffffffff811ffe80>] ? __fput+0x170/0x250<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475148] [<ffffffff81211941>] SyS_ioctl+0x91/0xb0<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475150] [<ffffffff817e4672>] system_call_fastpath+0x16/0x75<o:p></o:p> May 15 15:53:53 cmkondur-skl kernel: [19587.475151] ---[ end trace cd9e938b57041455 ]---<o:p></o:p> </div> </body> </html>