ASoC: Use kcalloc() instead of kzalloc()

Merge series from Qianfeng Rong <[email protected]>:

Replace devm_kzalloc() with devm_kcalloc() in sound/soc.  As noted in the
kernel documentation [1], open-coded multiplication in allocator arguments
is discouraged because it can lead to integer overflow.

Using devm_kcalloc() provides built-in overflow protection, making the
memory allocation safer when calculating the allocation size compared
to explicit multiplication.

[1]: https://www.kernel.org/doc/html/next/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments

Author: broonie

sound/soc/codecs/fs-amp-lib.c

@@ -111,7 +111,7 @@ static int fs_parse_scene_tables(struct fs_amp_lib *amp_lib)
 	if (count <= 0)
 		return -EFAULT;
 
-	scene = devm_kzalloc(amp_lib->dev, count * sizeof(*scene), GFP_KERNEL);
+	scene = devm_kcalloc(amp_lib->dev, count, sizeof(*scene), GFP_KERNEL);
 	if (!scene)
 		return -ENOMEM;
 

sound/soc/codecs/pcm6240.c

@@ -1353,8 +1353,8 @@ static int pcmdev_gain_ctrl_add(struct pcmdevice_priv *pcm_dev,
 		return 0;
 	}
 
-	pcmdev_controls = devm_kzalloc(pcm_dev->dev,
-		nr_chn * sizeof(struct snd_kcontrol_new), GFP_KERNEL);
+	pcmdev_controls = devm_kcalloc(pcm_dev->dev, nr_chn,
+				       sizeof(struct snd_kcontrol_new), GFP_KERNEL);
 	if (!pcmdev_controls)
 		return -ENOMEM;
 

sound/soc/fsl/fsl_sai.c

@@ -1345,7 +1345,7 @@ static int fsl_sai_read_dlcfg(struct fsl_sai *sai)
 
 	num_cfg = elems / 3;
 	/*  Add one more for default value */
-	cfg = devm_kzalloc(&pdev->dev, (num_cfg + 1) * sizeof(*cfg), GFP_KERNEL);
+	cfg = devm_kcalloc(&pdev->dev, num_cfg + 1, sizeof(*cfg), GFP_KERNEL);
 	if (!cfg)
 		return -ENOMEM;
 

sound/soc/fsl/imx-audmux.c

@@ -305,7 +305,7 @@ static int imx_audmux_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	regcache = devm_kzalloc(&pdev->dev, sizeof(u32) * reg_max, GFP_KERNEL);
+	regcache = devm_kcalloc(&pdev->dev, reg_max, sizeof(u32), GFP_KERNEL);
 	if (!regcache)
 		return -ENOMEM;
 

sound/soc/generic/test-component.c

@@ -547,8 +547,8 @@ static int test_driver_probe(struct platform_device *pdev)
 
 	priv	= devm_kzalloc(dev, sizeof(*priv),		GFP_KERNEL);
 	cdriv	= devm_kzalloc(dev, sizeof(*cdriv),		GFP_KERNEL);
-	ddriv	= devm_kzalloc(dev, sizeof(*ddriv) * num,	GFP_KERNEL);
-	dname	= devm_kzalloc(dev, sizeof(*dname) * num,	GFP_KERNEL);
+	ddriv	= devm_kcalloc(dev, num, sizeof(*ddriv), 	GFP_KERNEL);
+	dname	= devm_kcalloc(dev, num, sizeof(*dname), 	GFP_KERNEL);
 	if (!priv || !cdriv || !ddriv || !dname || !adata)
 		return -EINVAL;