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ALSA: hda: Simplify snd_hdac_refresh_widgets()

Selaa lähdekoodia 
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 98482377dc ("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>
This commit is contained in:
Takashi Iwai
2019-07-03 14:35:12 +02:00
vanhempi 3450121997
commit 774a075ab5
5 muutettua tiedostoa jossa 9 lisäystä ja 12 poistoa
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13
sound/hda/hdac_device.c
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@@ -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;