Hello. I'm trying latest Linus tree (v3.0-rc3-135-g19a1166) and the
suspend process generates lots of WARNINGs from i915 driver, this didn't
happen on 2.6.39 and apparently on 3.0-rc2 too.
The hardware is ASUS K53E with i5 2410M, so the chip is Intel HD 3000.
A sample warning:
[ 182.052219] WARNING: at drivers/gpu/drm/i915/i915_drv.c:322
gen6_gt_force_wake_get+0x25/0x9e [i915]()
[ 182.052224] Hardware name: K53E
[ 182.052226] Modules linked in: af_packet rfcomm bnep cpufreq_userspace
cpufreq_stats cpufreq_powersave cpufreq_ondemand acpi_cpufreq freq_table
mperf uinput fuse nfsd nfs lockd fscache auth_rpcgss nfs_acl sunrpc ipv6
snd_hda_codec_hdmi snd_hda_codec_realtek btusb bluetooth uvcvideo videodev
v4l2_compat_ioctl32 crc16 arc4 i915 drm_kms_helper drm asus_nb_wmi ath9k
snd_hda_intel snd_hda_codec asus_wmi i2c_algo_bit mac80211 sparse_keymap
pci_hotplug snd_hwdep snd_pcm ath9k_common ath9k_hw wmi video ath snd_seq
snd_timer intel_agp backlight mei(C) cfg80211 snd_seq_device intel_gtt
i2c_i801 i2c_core snd agpgart evdev soundcore snd_page_alloc battery ac
psmouse processor button dm_mod sg sr_mod cdrom thermal thermal_sys hwmon
usbcore atl1c [last unloaded: ehci_hcd]
[ 182.052288] Pid: 596, comm: kworker/u:7 Tainted: GWC
3.0.0-rc3-wrar-sabine+ #3
[ 182.052293] Call Trace:
[ 182.052296] [] warn_slowpath_common+0x7e/0x96
[ 182.052301] [] warn_slowpath_null+0x15/0x17
[ 182.052308] [] gen6_gt_force_wake_get+0x25/0x9e [i915]
[ 182.052316] [] i915_read8+0x2d/0x4f [i915]
[ 182.052325] [] i915_restore_display+0x1038/0x10b7 [i915]
[ 182.052330] [] ? _raw_spin_unlock_irqrestore+0x20/0x2b
[ 182.052339] [] i915_restore_state+0x53/0x1f1 [i915]
[ 182.052345] [] i915_drm_thaw+0x4c/0xd3 [i915]
[ 182.052352] [] i915_resume+0x40/0x57 [i915]
[ 182.052359] [] i915_pm_resume+0x11/0x13 [i915]
[ 182.052363] [] pci_pm_resume+0x87/0x9c
[ 182.052366] [] pm_op+0xa4/0x144
[ 182.052370] [] ? async_schedule+0x12/0x12
[ 182.052374] [] device_resume+0x8e/0xc6
[ 182.052377] [] ? try_to_wake_up+0x1be/0x1d0
[ 182.052381] [] async_resume+0x1a/0x42
[ 182.052385] [] async_run_entry_fn+0x9d/0x14f
[ 182.052389] [] ? async_run_entry_fn+0x116/0x14f
[ 182.052393] [] process_one_work+0x13c/0x21e
[ 182.052397] [] worker_thread+0xce/0x152
[ 182.052401] [] ? manage_workers.isra.29+0x16c/0x16c
[ 182.052405] [] kthread+0x7f/0x87
[ 182.052409] [] kernel_thread_helper+0x4/0x10
[ 182.052413] [] ? kthread_worker_fn+0x141/0x141
[ 182.052417] [] ? gs_change+0xb/0xb
[ 182.052420] ---[ end trace 26bf0be9378ff57c ]---
Then almost the same but with
[ 182.052083] [] warn_slowpath_common+0x7e/0x96
[ 182.052087] [] warn_slowpath_null+0x15/0x17
[ 182.052094] [] gen6_gt_force_wake_put+0x24/0x4d [i915]
[ 182.052102] [] i915_read8+0x3d/0x4f [i915]
These two warnings repeat for a total of 45 times, statring and ending
with _put one.
--
WBR, wRAR
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