[PATCH v2 08/13] ASoC: mediatek: mt8173-afe-pcm: use local `dev` pointer in driver callbacks

[Chen-Yu Tsai <wenst@chromium.org>]

The probe and remove functions in the mt8183-afe-pcm driver repeatedly uses
`&pdev->dev` for |struct device *|, but then assigns this value to
`afe->dev` and uses that in other places in the same function.

Store `&pdev->dev` in a local pointer and use that exclusively to avoid
the numerous dereferences and to make the code more consistent. Lines
are reflowed where it makes sense.

Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
---
 sound/soc/mediatek/mt8173/mt8173-afe-pcm.c | 63 +++++++++++-----------
 1 file changed, 32 insertions(+), 31 deletions(-)

diff --git a/sound/soc/mediatek/mt8173/mt8173-afe-pcm.c b/sound/soc/mediatek/mt8173/mt8173-afe-pcm.c
index f93d6348fdf8..c0fa623e0b17 100644
--- a/sound/soc/mediatek/mt8173/mt8173-afe-pcm.c
+++ b/sound/soc/mediatek/mt8173/mt8173-afe-pcm.c
@@ -1054,26 +1054,26 @@ static int mt8173_afe_pcm_dev_probe(struct platform_device *pdev)
 	struct mtk_base_afe *afe;
 	struct mt8173_afe_private *afe_priv;
 	struct snd_soc_component *comp_pcm, *comp_hdmi;
+	struct device *dev = &pdev->dev;
 
-	ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(33));
+	ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(33));
 	if (ret)
 		return ret;
 
-	afe = devm_kzalloc(&pdev->dev, sizeof(*afe), GFP_KERNEL);
+	afe = devm_kzalloc(dev, sizeof(*afe), GFP_KERNEL);
 	if (!afe)
 		return -ENOMEM;
 
-	afe->platform_priv = devm_kzalloc(&pdev->dev, sizeof(*afe_priv),
-					  GFP_KERNEL);
+	afe->platform_priv = devm_kzalloc(dev, sizeof(*afe_priv), GFP_KERNEL);
 	afe_priv = afe->platform_priv;
 	if (!afe_priv)
 		return -ENOMEM;
 
-	afe->dev = &pdev->dev;
+	afe->dev = dev;
 
-	ret = of_reserved_mem_device_init(&pdev->dev);
+	ret = of_reserved_mem_device_init(dev);
 	if (ret) {
-		dev_info(&pdev->dev, "no reserved memory found, pre-allocating buffers instead\n");
+		dev_info(dev, "no reserved memory found, pre-allocating buffers instead\n");
 		afe->preallocate_buffers = true;
 	}
 
@@ -1085,27 +1085,27 @@ static int mt8173_afe_pcm_dev_probe(struct platform_device *pdev)
 	if (IS_ERR(afe->base_addr))
 		return PTR_ERR(afe->base_addr);
 
-	afe->regmap = devm_regmap_init_mmio(&pdev->dev, afe->base_addr,
-		&mt8173_afe_regmap_config);
+	afe->regmap = devm_regmap_init_mmio(dev, afe->base_addr,
+					    &mt8173_afe_regmap_config);
 	if (IS_ERR(afe->regmap))
 		return PTR_ERR(afe->regmap);
 
 	/* initial audio related clock */
 	ret = mt8173_afe_init_audio_clk(afe);
 	if (ret) {
-		dev_err(afe->dev, "mt8173_afe_init_audio_clk fail\n");
+		dev_err(dev, "mt8173_afe_init_audio_clk fail\n");
 		return ret;
 	}
 
 	/* memif % irq initialize*/
 	afe->memif_size = MT8173_AFE_MEMIF_NUM;
-	afe->memif = devm_kcalloc(afe->dev, afe->memif_size,
+	afe->memif = devm_kcalloc(dev, afe->memif_size,
 				  sizeof(*afe->memif), GFP_KERNEL);
 	if (!afe->memif)
 		return -ENOMEM;
 
 	afe->irqs_size = MT8173_AFE_IRQ_NUM;
-	afe->irqs = devm_kcalloc(afe->dev, afe->irqs_size,
+	afe->irqs = devm_kcalloc(dev, afe->irqs_size,
 				 sizeof(*afe->irqs), GFP_KERNEL);
 	if (!afe->irqs)
 		return -ENOMEM;
@@ -1124,9 +1124,9 @@ static int mt8173_afe_pcm_dev_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, afe);
 
-	pm_runtime_enable(&pdev->dev);
-	if (!pm_runtime_enabled(&pdev->dev)) {
-		ret = mt8173_afe_runtime_resume(&pdev->dev);
+	pm_runtime_enable(dev);
+	if (!pm_runtime_enabled(dev)) {
+		ret = mt8173_afe_runtime_resume(dev);
 		if (ret)
 			goto err_pm_disable;
 	}
@@ -1136,13 +1136,12 @@ static int mt8173_afe_pcm_dev_probe(struct platform_device *pdev)
 	afe->runtime_resume = mt8173_afe_runtime_resume;
 	afe->runtime_suspend = mt8173_afe_runtime_suspend;
 
-	ret = devm_snd_soc_register_component(&pdev->dev,
-					 &mtk_afe_pcm_platform,
-					 NULL, 0);
+	ret = devm_snd_soc_register_component(dev, &mtk_afe_pcm_platform,
+					      NULL, 0);
 	if (ret)
 		goto err_pm_disable;
 
-	comp_pcm = devm_kzalloc(&pdev->dev, sizeof(*comp_pcm), GFP_KERNEL);
+	comp_pcm = devm_kzalloc(dev, sizeof(*comp_pcm), GFP_KERNEL);
 	if (!comp_pcm) {
 		ret = -ENOMEM;
 		goto err_pm_disable;
@@ -1150,7 +1149,7 @@ static int mt8173_afe_pcm_dev_probe(struct platform_device *pdev)
 
 	ret = snd_soc_component_initialize(comp_pcm,
 					   &mt8173_afe_pcm_dai_component,
-					   &pdev->dev);
+					   dev);
 	if (ret)
 		goto err_pm_disable;
 
@@ -1164,7 +1163,7 @@ static int mt8173_afe_pcm_dev_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_pm_disable;
 
-	comp_hdmi = devm_kzalloc(&pdev->dev, sizeof(*comp_hdmi), GFP_KERNEL);
+	comp_hdmi = devm_kzalloc(dev, sizeof(*comp_hdmi), GFP_KERNEL);
 	if (!comp_hdmi) {
 		ret = -ENOMEM;
 		goto err_cleanup_components;
@@ -1172,7 +1171,7 @@ static int mt8173_afe_pcm_dev_probe(struct platform_device *pdev)
 
 	ret = snd_soc_component_initialize(comp_hdmi,
 					   &mt8173_afe_hdmi_dai_component,
-					   &pdev->dev);
+					   dev);
 	if (ret)
 		goto err_cleanup_components;
 
@@ -1186,30 +1185,32 @@ static int mt8173_afe_pcm_dev_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_cleanup_components;
 
-	ret = devm_request_irq(afe->dev, irq_id, mt8173_afe_irq_handler,
+	ret = devm_request_irq(dev, irq_id, mt8173_afe_irq_handler,
 			       0, "Afe_ISR_Handle", (void *)afe);
 	if (ret) {
-		dev_err(afe->dev, "could not request_irq\n");
+		dev_err(dev, "could not request_irq\n");
 		goto err_cleanup_components;
 	}
 
-	dev_info(&pdev->dev, "MT8173 AFE driver initialized.\n");
+	dev_info(dev, "MT8173 AFE driver initialized.\n");
 	return 0;
 
 err_cleanup_components:
-	snd_soc_unregister_component(&pdev->dev);
+	snd_soc_unregister_component(dev);
 err_pm_disable:
-	pm_runtime_disable(&pdev->dev);
+	pm_runtime_disable(dev);
 	return ret;
 }
 
 static void mt8173_afe_pcm_dev_remove(struct platform_device *pdev)
 {
-	snd_soc_unregister_component(&pdev->dev);
+	struct device *dev = &pdev->dev;
 
-	pm_runtime_disable(&pdev->dev);
-	if (!pm_runtime_status_suspended(&pdev->dev))
-		mt8173_afe_runtime_suspend(&pdev->dev);
+	snd_soc_unregister_component(dev);
+
+	pm_runtime_disable(dev);
+	if (!pm_runtime_status_suspended(dev))
+		mt8173_afe_runtime_suspend(dev);
 }
 
 static const struct of_device_id mt8173_afe_pcm_dt_match[] = {
-- 
2.49.0.805.g082f7c87e0-goog