Additional info:
reporter:       libreport-2.3.0
WARNING: CPU: 0 PID: 3149 at drivers/gpu/drm/i915/intel_pm.c:6560 intel_display_power_put+0x15c/0x170 [i915]()
Modules linked in: rfcomm fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw bnep arc4 vfat fat intel_rapl x86_pkg_temp_thermal coretemp iwlmvm kvm_intel mac80211 iTCO_wdt iTCO_vendor_support kvm uvcvideo videobuf2_vmalloc crct10dif_pclmul videobuf2_core iwlwifi videobuf2_memops crc32_pclmul crc32c_intel v4l2_common cfg80211 btusb ghash_clmulni_intel bluetooth rndis_host
 videodev cdc_ether usbnet i2c_i801 serio_raw media rtsx_pci_ms snd_hda_codec_realtek memstick lpc_ich snd_hda_codec_hdmi snd_hda_codec_generic mei_me mei sparse_keymap rfkill toshiba_haps toshiba_bluetooth snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd ie31200_edac shpchp edac_core wmi soundcore nfsd auth_rpcgss nfs_acl lockd grace sunrpc uas usb_storage radeon i915 rtsx_pci_sdmmc mmc_core i2c_algo_bit drm_kms_helper ttm drm r8169 rtsx_pci mfd_core mii video
CPU: 0 PID: 3149 Comm: kworker/0:2 Not tainted 3.18.7-200.fc21.x86_64 #1
Hardware name: TOSHIBA SATELLITE P50-B-10H/VG20SQ, BIOS 1.30 08/14/2014
Workqueue: events edp_panel_vdd_work [i915]
 0000000000000000 00000000ed6900c9 ffff880398c1bd28 ffffffff8175e686
 0000000000000000 0000000000000000 ffff880398c1bd68 ffffffff810991d1
 ffff880398c1bd48 ffff88041497002c ffff880414970000 ffff880414978848
Call Trace:
 [<ffffffff8175e686>] dump_stack+0x46/0x58
 [<ffffffff810991d1>] warn_slowpath_common+0x81/0xa0
 [<ffffffff810992ea>] warn_slowpath_null+0x1a/0x20
 [<ffffffffa0130a7c>] intel_display_power_put+0x15c/0x170 [i915]
 [<ffffffffa01a11ed>] pps_unlock+0x3d/0x50 [i915]
 [<ffffffffa01a3609>] edp_panel_vdd_work+0x39/0x40 [i915]
 [<ffffffff810b245d>] process_one_work+0x14d/0x400
 [<ffffffff810b2deb>] worker_thread+0x6b/0x480
 [<ffffffff810b2d80>] ? rescuer_thread+0x2a0/0x2a0
 [<ffffffff810b801a>] kthread+0xea/0x100
 [<ffffffff8109bf78>] ? do_exit+0x848/0xab0
 [<ffffffff810b7f30>] ? kthread_create_on_node+0x1b0/0x1b0
 [<ffffffff8176537c>] ret_from_fork+0x7c/0xb0
 [<ffffffff810b7f30>] ? kthread_create_on_node+0x1b0/0x1b0