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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BAT IGT ALL] drv_module_reload_basic fail on all platforms"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94736#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [BAT IGT ALL] drv_module_reload_basic fail on all platforms"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94736">bug 94736</a>
from <span class="vcard"><a class="email" href="mailto:marius.c.vlad@intel.com" title="Marius Vlad <marius.c.vlad@intel.com>"> <span class="fn">Marius Vlad</span></a>
</span></b>
<pre>Same warning:
[ 40.798598] ------------[ cut here ]------------
[ 40.798606] WARNING: CPU: 1 PID: 450 at sound/hda/hdac_i915.c:309
snd_hdac_i915_init+0x130/0x169 [snd_hda_core]
[ 40.798608] Modules linked in: snd_hda_intel(+) i915 drm_kms_helper drm
snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_codec
intel_rapl snd_hda_core x86_pkg_temp_thermal dell_smm_hwmon intel_powerclamp
tpm_tis tpm joydev coretemp snd_hwdep ghash_clmulni_intel serio_raw snd_pcm
snd_timer lpc_ich mei_me mei processor battery evdev netconsole hid_generic
usbhid hid xhci_pci xhci_hcd psmouse ehci_pci ehci_hcd r8169 i2c_algo_bit mii
usbcore usb_common fan thermal video button [last unloaded: drm]
[ 40.798624] CPU: 1 PID: 450 Comm: kworker/1:3 Tainted: G U W
4.6.0-rc1+ #89
[ 40.798625] Hardware name: Dell Inc. Inspiron 3847/088DT1 , BIOS A06
01/15/2015
[ 40.798628] Workqueue: events azx_probe_work [snd_hda_intel]
[ 40.798629] 0000000000000286 00000000ffe976ea ffffffff814b8ca5
0000000000000000
[ 40.798630] 0000000000000000 ffffffff810f8ebe ffff88002f29f708
ffff8802058ae600
[ 40.798632] ffff88021fa96240 ffff880215968098 ffff880215968000
ffff88002f29f000
[ 40.798633] Call Trace:
[ 40.798637] [<ffffffff814b8ca5>] ? dump_stack+0x5c/0x77
[ 40.798640] [<ffffffff810f8ebe>] ? __warn+0xbe/0xe0
[ 40.798644] [<ffffffffa03d49e0>] ? snd_hdac_i915_init+0x130/0x169
[snd_hda_core]
[ 40.798646] [<ffffffff8112d127>] ? dequeue_task_fair+0x57/0x940
[ 40.798649] [<ffffffffa0116642>] ? azx_probe_continue+0x2e2/0x850
[snd_hda_intel]
[ 40.798652] [<ffffffff8111170a>] ? process_one_work+0x15a/0x410
[ 40.798653] [<ffffffff81111a0d>] ? worker_thread+0x4d/0x480
[ 40.798654] [<ffffffff811119c0>] ? process_one_work+0x410/0x410
[ 40.798656] [<ffffffff8111783d>] ? kthread+0xcd/0xf0
[ 40.798659] [<ffffffff81791ca2>] ? ret_from_fork+0x22/0x40
[ 40.798661] [<ffffffff81117770>] ? kthread_create_on_node+0x190/0x190
[ 40.798662] ---[ end trace 368a576a7cb20cec ]---
Tried with:
commit f6216961932e1c64251ddb6a6ba17e4f92596397
Author: Takashi Iwai <<a href="mailto:tiwai@suse.de">tiwai@suse.de</a>>
Date: Tue Mar 29 12:29:24 2016 +0200
ALSA: hda - Clear the leftover component assignment at snd_hdac_i915_exit()
The commit [d745f5e7b8b2: ALSA: hda - Add the pin / port mapping on
Intel ILK and VLV] introduced a WARN_ON() to check the pointer for
avoiding the double initializations. But hdac_acomp pointer wasn't
cleared at snd_hdac_i915_exit(), thus after reloading the HD-audio
driver, it may result in the false positive warning. This patch makes
sure to clear the leftover pointer at exit.
Bugzilla: <a class="bz_bug_link
bz_status_NEW "
title="NEW - [BAT IGT ALL] drv_module_reload_basic fail on all platforms"
href="show_bug.cgi?id=94736">https://bugs.freedesktop.org/show_bug.cgi?id=94736</a>
Reported-by: Daniela Doras-prodan <<a href="mailto:daniela.doras-prodan@intel.com">daniela.doras-prodan@intel.com</a>>
Signed-off-by: Takashi Iwai <<a href="mailto:tiwai@suse.de">tiwai@suse.de</a>>
commit 2702045fbd4188c1c26bd890bc43976fd10937ad
Author: Jani Nikula <<a href="mailto:jani.nikula@intel.com">jani.nikula@intel.com</a>>
Date: Tue Mar 29 15:21:58 2016 +0300
drm-intel-nightly: 2016y-03m-29d-12h-21m-19s UTC integration manifest</pre>
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