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| author | Takashi Iwai <tiwai@suse.de> | 2019-01-30 19:46:03 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2019-02-01 13:30:09 +0300 |
| commit | 305a0ade180981686eec1f92aa6252a7c6ebb1cf (patch) | |
| tree | b443210ad45be6c9c0b4f7dfdb52a7593cdf647f /include | |
| parent | 35a39f98567d8d3f1cea48f0f30de1a7e736b644 (diff) | |
| download | linux-305a0ade180981686eec1f92aa6252a7c6ebb1cf.tar.xz | |
ALSA: hda - Serialize codec registrations
In the current code, the codec registration may happen both at the
codec bind time and the end of the controller probe time. In a rare
occasion, they race with each other, leading to Oops due to the still
uninitialized card device.
This patch introduces a simple flag to prevent the codec registration
at the codec bind time as long as the controller probe is going on.
The controller probe invokes snd_card_register() that does the whole
registration task, and we don't need to register each piece
beforehand.
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/sound/hda_codec.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sound/hda_codec.h b/include/sound/hda_codec.h index 7fa48b100936..cc7c8d42d4fd 100644 --- a/include/sound/hda_codec.h +++ b/include/sound/hda_codec.h @@ -68,6 +68,7 @@ struct hda_bus { unsigned int response_reset:1; /* controller was reset */ unsigned int in_reset:1; /* during reset operation */ unsigned int no_response_fallback:1; /* don't fallback at RIRB error */ + unsigned int bus_probing :1; /* during probing process */ int primary_dig_out_type; /* primary digital out PCM type */ unsigned int mixer_assigned; /* codec addr for mixer name */ |