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Unverified Commit 3bbf5d34 authored by Charles Keepax's avatar Charles Keepax Committed by Mark Brown
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ASoC: dapm: Move error handling to snd_soc_dapm_new_control_unlocked 



Currently DAPM has a lot of similar code to handle errors from
snd_soc_dapm_new_control_unlocked, and much of this code does
not really accurately reflect what the function returns.

Firstly, most places will check for a return value of
-EPROBE_DEFER and silence any error messages in that case. The
one notable exception here being dapm_kcontrol_data_alloc
which does currently print any error messages in the case
of snd_soc_dapm_new_control_unlocked returning NULL or an
error. Additionally the error prints being silenced in these
case are redundant as snd_soc_dapm_new_control_unlocked can
only return -EPROBE_DEFER or NULL when failing.

Secondly, most places will treat a return value of NULL as
an -ENOMEM.  This is not correct either since any error except
EPROBE_DEFER will cause a return value of NULL from
snd_soc_dapm_new_control_unlocked.

Centralise this handling and the error messages within
snd_soc_dapm_new_control_unlocked and update the callers
to simply check IS_ERR and return. Note that this update is
slightly simpler in the case of dapm_kcontrol_data_alloc where
that is fairly close to the handling that was already in place.

Signed-off-by: default avatarCharles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 0b7990e3

sound/soc/soc-dapm.c

+19 −99
Original line number Diff line number Diff line
@@ -364,10 +364,6 @@ static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget, 
				ret = PTR_ERR(data->widget);

				goto err_data;

			}

			if (!data->widget) {

				ret = -ENOMEM;

				goto err_data;

			}

		}

		break;

	case snd_soc_dapm_demux:
@@ -402,10 +398,6 @@ static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget, 
				ret = PTR_ERR(data->widget);

				goto err_data;

			}

			if (!data->widget) {

				ret = -ENOMEM;

				goto err_data;

			}



			snd_soc_dapm_add_path(widget->dapm, data->widget,

					      widget, NULL, NULL);
@@ -3433,23 +3425,8 @@ snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, 


	mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);

	w = snd_soc_dapm_new_control_unlocked(dapm, widget);

	/* Do not nag about probe deferrals */

	if (IS_ERR(w)) {

		int ret = PTR_ERR(w);



		if (ret != -EPROBE_DEFER)

			dev_err(dapm->dev,

				"ASoC: Failed to create DAPM control %s (%d)\n",

				widget->name, ret);

		goto out_unlock;

	}

	if (!w)

		dev_err(dapm->dev,

			"ASoC: Failed to create DAPM control %s\n",

			widget->name);



out_unlock:

	mutex_unlock(&dapm->card->dapm_mutex);



	return w;

}

EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control);
@@ -3464,24 +3441,20 @@ snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm, 
	int ret;



	if ((w = dapm_cnew_widget(widget)) == NULL)

		return NULL;

		return ERR_PTR(-ENOMEM);



	switch (w->id) {

	case snd_soc_dapm_regulator_supply:

		w->regulator = devm_regulator_get(dapm->dev, w->name);

		if (IS_ERR(w->regulator)) {

			ret = PTR_ERR(w->regulator);

			if (ret == -EPROBE_DEFER)

				return ERR_PTR(ret);

			dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",

				w->name, ret);

			return NULL;

			goto request_failed;

		}



		if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {

			ret = regulator_allow_bypass(w->regulator, true);

			if (ret != 0)

				dev_warn(w->dapm->dev,

				dev_warn(dapm->dev,

					 "ASoC: Failed to bypass %s: %d\n",

					 w->name, ret);

		}
@@ -3490,22 +3463,14 @@ snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm, 
		w->pinctrl = devm_pinctrl_get(dapm->dev);

		if (IS_ERR(w->pinctrl)) {

			ret = PTR_ERR(w->pinctrl);

			if (ret == -EPROBE_DEFER)

				return ERR_PTR(ret);

			dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",

				w->name, ret);

			return NULL;

			goto request_failed;

		}

		break;

	case snd_soc_dapm_clock_supply:

		w->clk = devm_clk_get(dapm->dev, w->name);

		if (IS_ERR(w->clk)) {

			ret = PTR_ERR(w->clk);

			if (ret == -EPROBE_DEFER)

				return ERR_PTR(ret);

			dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",

				w->name, ret);

			return NULL;

			goto request_failed;

		}

		break;

	default:
@@ -3519,7 +3484,7 @@ snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm, 
		w->name = kstrdup_const(widget->name, GFP_KERNEL);

	if (w->name == NULL) {

		kfree(w);

		return NULL;

		return ERR_PTR(-ENOMEM);

	}



	switch (w->id) {
@@ -3596,6 +3561,13 @@ snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm, 
	/* machine layer sets up unconnected pins and insertions */

	w->connected = 1;

	return w;



request_failed:

	if (ret != -EPROBE_DEFER)

		dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",

			w->name, ret);



	return ERR_PTR(ret);

}



/**
@@ -3621,19 +3593,6 @@ int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, 
		w = snd_soc_dapm_new_control_unlocked(dapm, widget);

		if (IS_ERR(w)) {

			ret = PTR_ERR(w);

			/* Do not nag about probe deferrals */

			if (ret == -EPROBE_DEFER)

				break;

			dev_err(dapm->dev,

				"ASoC: Failed to create DAPM control %s (%d)\n",

				widget->name, ret);

			break;

		}

		if (!w) {

			dev_err(dapm->dev,

				"ASoC: Failed to create DAPM control %s\n",

				widget->name);

			ret = -ENOMEM;

			break;

		}

		widget++;
@@ -3944,21 +3903,8 @@ int snd_soc_dapm_new_pcm(struct snd_soc_card *card, 
	dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);



	w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template);

	if (IS_ERR(w)) {

		ret = PTR_ERR(w);

		/* Do not nag about probe deferrals */

		if (ret != -EPROBE_DEFER)

			dev_err(card->dev,

				"ASoC: Failed to create %s widget (%d)\n",

				link_name, ret);

	if (IS_ERR(w))

		goto outfree_kcontrol_news;

	}

	if (!w) {

		dev_err(card->dev, "ASoC: Failed to create %s widget\n",

			link_name);

		ret = -ENOMEM;

		goto outfree_kcontrol_news;

	}



	w->params = params;

	w->num_params = num_params;
@@ -3999,21 +3945,8 @@ int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm, 
			template.name);



		w = snd_soc_dapm_new_control_unlocked(dapm, &template);

		if (IS_ERR(w)) {

			int ret = PTR_ERR(w);



			/* Do not nag about probe deferrals */

			if (ret != -EPROBE_DEFER)

				dev_err(dapm->dev,

				"ASoC: Failed to create %s widget (%d)\n",

				dai->driver->playback.stream_name, ret);

			return ret;

		}

		if (!w) {

			dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",

				dai->driver->playback.stream_name);

			return -ENOMEM;

		}

		if (IS_ERR(w))

			return PTR_ERR(w);



		w->priv = dai;

		dai->playback_widget = w;
@@ -4028,21 +3961,8 @@ int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm, 
			template.name);



		w = snd_soc_dapm_new_control_unlocked(dapm, &template);

		if (IS_ERR(w)) {

			int ret = PTR_ERR(w);



			/* Do not nag about probe deferrals */

			if (ret != -EPROBE_DEFER)

				dev_err(dapm->dev,

				"ASoC: Failed to create %s widget (%d)\n",

				dai->driver->playback.stream_name, ret);

			return ret;

		}

		if (!w) {

			dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",

				dai->driver->capture.stream_name);

			return -ENOMEM;

		}

		if (IS_ERR(w))

			return PTR_ERR(w);



		w->priv = dai;

		dai->capture_widget = w;

sound/soc/soc-topology.c

+0 −11
Original line number Diff line number Diff line
@@ -1565,17 +1565,6 @@ static int soc_tplg_dapm_widget_create(struct soc_tplg *tplg, 
		widget = snd_soc_dapm_new_control_unlocked(dapm, &template);

	if (IS_ERR(widget)) {

		ret = PTR_ERR(widget);

		/* Do not nag about probe deferrals */

		if (ret != -EPROBE_DEFER)

			dev_err(tplg->dev,

				"ASoC: failed to create widget %s controls (%d)\n",

				w->name, ret);

		goto hdr_err;

	}

	if (widget == NULL) {

		dev_err(tplg->dev, "ASoC: failed to create widget %s controls\n",

			w->name);

		ret = -ENOMEM;

		goto hdr_err;

	}