linux-kernel - [PATCH 5/9] soundwire: intel: simplify with cleanup.h

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Message-Id: <20240703-soundwire-cleanup-h-v1-5-24fa0dbb948f@linaro.org>
Date: Wed, 03 Jul 2024 12:15:57 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Vinod Koul <vkoul@...nel.org>, 
 Bard Liao <yung-chuan.liao@...ux.intel.com>, 
 Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>, 
 Sanyog Kale <sanyog.r.kale@...el.com>
Cc: alsa-devel@...a-project.org, linux-kernel@...r.kernel.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 5/9] soundwire: intel: simplify with cleanup.h

Allocate the memory with scoped/cleanup.h to reduce error handling and
make the code a bit simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 drivers/soundwire/intel.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index b4449095b423..421da0f86fad 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -6,6 +6,7 @@
  */
 
 #include <linux/acpi.h>
+#include <linux/cleanup.h>
 #include <linux/debugfs.h>
 #include <linux/delay.h>
 #include <linux/io.h>
@@ -73,12 +74,11 @@ static int intel_reg_show(struct seq_file *s_file, void *data)
 	struct sdw_intel *sdw = s_file->private;
 	void __iomem *s = sdw->link_res->shim;
 	void __iomem *a = sdw->link_res->alh;
-	char *buf;
 	ssize_t ret;
 	int i, j;
 	unsigned int links, reg;
 
-	buf = kzalloc(RD_BUF, GFP_KERNEL);
+	char *buf __free(kfree) = kzalloc(RD_BUF, GFP_KERNEL);
 	if (!buf)
 		return -ENOMEM;
 
@@ -129,7 +129,6 @@ static int intel_reg_show(struct seq_file *s_file, void *data)
 		ret += intel_sprintf(a, true, buf, ret, SDW_ALH_STRMZCFG(i));
 
 	seq_printf(s_file, "%s", buf);
-	kfree(buf);
 
 	return 0;
 }
@@ -727,7 +726,6 @@ static int intel_hw_params(struct snd_pcm_substream *substream,
 	struct sdw_cdns_dai_runtime *dai_runtime;
 	struct sdw_cdns_pdi *pdi;
 	struct sdw_stream_config sconfig;
-	struct sdw_port_config *pconfig;
 	int ch, dir;
 	int ret;
 
@@ -771,7 +769,8 @@ static int intel_hw_params(struct snd_pcm_substream *substream,
 	sconfig.bps = snd_pcm_format_width(params_format(params));
 
 	/* Port configuration */
-	pconfig = kzalloc(sizeof(*pconfig), GFP_KERNEL);
+	struct sdw_port_config *pconfig __free(kfree) = kzalloc(sizeof(*pconfig),
+								GFP_KERNEL);
 	if (!pconfig)
 		return -ENOMEM;
 
@@ -783,8 +782,6 @@ static int intel_hw_params(struct snd_pcm_substream *substream,
 	if (ret)
 		dev_err(cdns->dev, "add master to stream failed:%d\n", ret);
 
-	kfree(pconfig);
-
 	return ret;
 }
 

-- 
2.43.0