Driver's probe() has two allocations which are needed only within the probe() itself - for devm_regmap_init_mmio().
Usage of devm interface is a bit misleading here, because these can be freed right after each scope finishes.
This makes the code a bit more obvious and self documenting.
Signed-off-by: Krzysztof Kozlowski krzysztof.kozlowski@linaro.org
---
Changes in v2: 1. New patch --- sound/soc/codecs/lpass-wsa-macro.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-)
diff --git a/sound/soc/codecs/lpass-wsa-macro.c b/sound/soc/codecs/lpass-wsa-macro.c index b4e7139bac61..73a588289408 100644 --- a/sound/soc/codecs/lpass-wsa-macro.c +++ b/sound/soc/codecs/lpass-wsa-macro.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0-only // Copyright (c) 2018-2020, The Linux Foundation. All rights reserved.
+#include <linux/cleanup.h> #include <linux/module.h> #include <linux/init.h> #include <linux/io.h> @@ -2725,8 +2726,6 @@ static const struct snd_soc_component_driver wsa_macro_component_drv = { static int wsa_macro_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct reg_default *reg_defaults; - struct regmap_config *reg_config; struct wsa_macro *wsa; kernel_ulong_t flags; void __iomem *base; @@ -2765,6 +2764,8 @@ static int wsa_macro_probe(struct platform_device *pdev) return PTR_ERR(base);
wsa->codec_version = lpass_macro_get_codec_version(); + struct reg_default *reg_defaults __free(kfree) = NULL; + switch (wsa->codec_version) { case LPASS_CODEC_VERSION_1_0: case LPASS_CODEC_VERSION_1_1: @@ -2773,9 +2774,8 @@ static int wsa_macro_probe(struct platform_device *pdev) case LPASS_CODEC_VERSION_2_1: wsa->reg_layout = &wsa_codec_v2_1; def_count = ARRAY_SIZE(wsa_defaults) + ARRAY_SIZE(wsa_defaults_v2_1); - reg_defaults = devm_kmalloc_array(dev, def_count, - sizeof(*reg_defaults), - GFP_KERNEL); + reg_defaults = kmalloc_array(def_count, sizeof(*reg_defaults), + GFP_KERNEL); if (!reg_defaults) return -ENOMEM; memcpy(®_defaults[0], wsa_defaults, sizeof(wsa_defaults)); @@ -2789,9 +2789,8 @@ static int wsa_macro_probe(struct platform_device *pdev) case LPASS_CODEC_VERSION_2_8: wsa->reg_layout = &wsa_codec_v2_5; def_count = ARRAY_SIZE(wsa_defaults) + ARRAY_SIZE(wsa_defaults_v2_5); - reg_defaults = devm_kmalloc_array(dev, def_count, - sizeof(*reg_defaults), - GFP_KERNEL); + reg_defaults = kmalloc_array(def_count, sizeof(*reg_defaults), + GFP_KERNEL); if (!reg_defaults) return -ENOMEM; memcpy(®_defaults[0], wsa_defaults, sizeof(wsa_defaults)); @@ -2804,8 +2803,9 @@ static int wsa_macro_probe(struct platform_device *pdev) return -EINVAL; }
- reg_config = devm_kmemdup(dev, &wsa_regmap_config, - sizeof(*reg_config), GFP_KERNEL); + struct regmap_config *reg_config __free(kfree) = kmemdup(&wsa_regmap_config, + sizeof(*reg_config), + GFP_KERNEL); if (!reg_config) return -ENOMEM;
@@ -2816,8 +2816,6 @@ static int wsa_macro_probe(struct platform_device *pdev) if (IS_ERR(wsa->regmap)) return PTR_ERR(wsa->regmap);
- devm_kfree(dev, reg_config); - devm_kfree(dev, reg_defaults); dev_set_drvdata(dev, wsa);
wsa->dev = dev;