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| author | Takashi Iwai <tiwai@suse.de> | 2019-07-03 14:35:12 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2019-07-05 12:01:06 +0200 |
| commit | 774a075ab5140bb4504e6026bf327021926c3e65 (patch) | |
| tree | f1d8252e2adc8f0f6ca3bb142f5b612699f8cc7e /sound/hda | |
| parent | 3450121997ce872eb7f1248417225827ea249710 (diff) | |
| download | linux-774a075ab5140bb4504e6026bf327021926c3e65.tar.bz2 | |
ALSA: hda: Simplify snd_hdac_refresh_widgets()
Along with the recent fix for the races of snd_hdac_refresh_widgets()
it turned out that the instantiation of widgets sysfs at
snd_hdac_sysfs_reinit() could cause a race. The race itself was
already covered later by extending the mutex protection range, the
commit 98482377dc72 ("ALSA: hda: Fix widget_mutex incomplete
protection"), but this also indicated that the call of *_reinit() is
basically superfluous, as the widgets shall be created sooner or later
from snd_hdac_device_register().
This patch removes the redundant call of snd_hdac_sysfs_reinit() at
first. By this removal, the sysfs argument itself in
snd_hdac_refresh_widgets() becomes superfluous, too, because the only
case sysfs=false is always with codec->widgets=NULL. So, we drop this
redundant argument as well.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/hda')
| -rw-r--r-- | sound/hda/hdac_device.c | 13 | ||||
| -rw-r--r-- | sound/hda/hdac_sysfs.c | 2 |
2 files changed, 6 insertions, 9 deletions
diff --git a/sound/hda/hdac_device.c b/sound/hda/hdac_device.c index 11050bfd8068..a265c1d68876 100644 --- a/sound/hda/hdac_device.c +++ b/sound/hda/hdac_device.c @@ -89,7 +89,7 @@ int snd_hdac_device_init(struct hdac_device *codec, struct hdac_bus *bus, fg = codec->afg ? codec->afg : codec->mfg; - err = snd_hdac_refresh_widgets(codec, false); + err = snd_hdac_refresh_widgets(codec); if (err < 0) goto error; @@ -394,9 +394,8 @@ static void setup_fg_nodes(struct hdac_device *codec) /** * snd_hdac_refresh_widgets - Reset the widget start/end nodes * @codec: the codec object - * @sysfs: re-initialize sysfs tree, too */ -int snd_hdac_refresh_widgets(struct hdac_device *codec, bool sysfs) +int snd_hdac_refresh_widgets(struct hdac_device *codec) { hda_nid_t start_nid; int nums, err = 0; @@ -414,11 +413,9 @@ int snd_hdac_refresh_widgets(struct hdac_device *codec, bool sysfs) goto unlock; } - if (sysfs) { - err = hda_widget_sysfs_reinit(codec, start_nid, nums); - if (err < 0) - goto unlock; - } + err = hda_widget_sysfs_reinit(codec, start_nid, nums); + if (err < 0) + goto unlock; codec->num_nodes = nums; codec->start_nid = start_nid; diff --git a/sound/hda/hdac_sysfs.c b/sound/hda/hdac_sysfs.c index 909d5ef1179c..e56e83325903 100644 --- a/sound/hda/hdac_sysfs.c +++ b/sound/hda/hdac_sysfs.c @@ -428,7 +428,7 @@ int hda_widget_sysfs_reinit(struct hdac_device *codec, int i; if (!codec->widgets) - return hda_widget_sysfs_init(codec); + return 0; tree = kmemdup(codec->widgets, sizeof(*tree), GFP_KERNEL); if (!tree) |