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ASoC: cs43130: handle errors in cs43130_probe() properly 

cs43130_probe() does not do any valid error checking of things it
initializes, OR what it does, it does not unwind properly if there are
errors.

Fix this up by moving the sysfs files to an attribute group so the
driver core will correctly add/remove them all at once and handle errors
with them, and correctly check for creating a new workqueue and
unwinding if that fails.

Cc: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210503115736.2104747-58-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2021-05-03 13:57:24 +02:00
parent fdda0dd268
commit 2da441a649
1 changed files with 14 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
sound/soc/codecs/cs43130.c
View File

@ -1735,6 +1735,14 @@ static DEVICE_ATTR(hpload_dc_r, 0444, cs43130_show_dc_r, NULL);
static DEVICE_ATTR(hpload_ac_l, 0444, cs43130_show_ac_l, NULL);
static DEVICE_ATTR(hpload_ac_r, 0444, cs43130_show_ac_r, NULL);
static struct attribute *hpload_attrs[] = {
&dev_attr_hpload_dc_l.attr,
&dev_attr_hpload_dc_r.attr,
&dev_attr_hpload_ac_l.attr,
&dev_attr_hpload_ac_r.attr,
};
ATTRIBUTE_GROUPS(hpload);
static struct reg_sequence hp_en_cal_seq[] = {
{CS43130_INT_MASK_4, CS43130_INT_MASK_ALL},
{CS43130_HP_MEAS_LOAD_1, 0},
@ -2302,23 +2310,15 @@ static int cs43130_probe(struct snd_soc_component *component)
cs43130->hpload_done = false;
if (cs43130->dc_meas) {
ret = device_create_file(component->dev, &dev_attr_hpload_dc_l);
if (ret < 0)
return ret;
ret = device_create_file(component->dev, &dev_attr_hpload_dc_r);
if (ret < 0)
return ret;
ret = device_create_file(component->dev, &dev_attr_hpload_ac_l);
if (ret < 0)
return ret;
ret = device_create_file(component->dev, &dev_attr_hpload_ac_r);
if (ret < 0)
ret = sysfs_create_groups(&component->dev->kobj, hpload_groups);
if (ret)
return ret;
cs43130->wq = create_singlethread_workqueue("cs43130_hp");
if (!cs43130->wq) {
sysfs_remove_groups(&component->dev->kobj, hpload_groups);
return -ENOMEM;
}
INIT_WORK(&cs43130->work, cs43130_imp_meas);
}