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| author | Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com> | 2019-05-13 11:18:01 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2019-05-13 14:41:56 +0200 |
| commit | ed180abba7f1fc3cf04ffa27767b1bcc8e8c842a (patch) | |
| tree | 5e740e02d4fd92f1721d12ef0a7b0012d76b54a8 /include/sound/hdaudio.h | |
| parent | 891afcf2462d2cc4ef7caf94215358ca61fa32cb (diff) | |
| download | linux-ed180abba7f1fc3cf04ffa27767b1bcc8e8c842a.tar.gz linux-ed180abba7f1fc3cf04ffa27767b1bcc8e8c842a.tar.bz2 linux-ed180abba7f1fc3cf04ffa27767b1bcc8e8c842a.zip | |
ALSA: hda: Fix race between creating and refreshing sysfs entries
hda_widget_sysfs_reinit() can free underlying codec->widgets structure
on which widget_tree_create() operates. Add locking to prevent such
issues from happening.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110382
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound/hdaudio.h')
| -rw-r--r-- | include/sound/hdaudio.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h index ca1d9a70d026..5a9315af2d37 100644 --- a/include/sound/hdaudio.h +++ b/include/sound/hdaudio.h @@ -81,6 +81,7 @@ struct hdac_device { atomic_t in_pm; /* suspend/resume being performed */ /* sysfs */ + struct mutex widget_lock; struct hdac_widget_tree *widgets; /* regmap */ |