[PATCH] ALSA: asihpi - use kzalloc()

[PATCH] ALSA: asihpi - use kzalloc()

[Thomas Meyer]

From: Thomas Meyer <thomas@m3y3r.de>


 Use kzalloc rather than kmalloc followed by memset with 0

 This considers some simple cases that are common and easy to validate
 Note in particular that there are no ...s in the rule, so all of the
 matched code has to be contiguous

 The semantic patch that makes this output is available
 in scripts/coccinelle/api/alloc/kzalloc-simple.cocci.

 More information about semantic patching is available at
 http://coccinelle.lip6.fr/

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
---

diff -u -p a/sound/pci/asihpi/hpicmn.c b/sound/pci/asihpi/hpicmn.c
--- a/sound/pci/asihpi/hpicmn.c 2011-07-26 00:46:12.970154018 +0200
+++ b/sound/pci/asihpi/hpicmn.c 2011-08-01 20:42:34.859285236 +0200
@@ -631,13 +631,12 @@ struct hpi_control_cache *hpi_alloc_cont
 	if (!p_cache)
 		return NULL;
 
-	p_cache->p_info =
-		kmalloc(sizeof(*p_cache->p_info) * control_count, GFP_KERNEL);
+	p_cache->p_info = kzalloc(sizeof(*p_cache->p_info) * control_count,
+				  GFP_KERNEL);
 	if (!p_cache->p_info) {
 		kfree(p_cache);
 		return NULL;
 	}
-	memset(p_cache->p_info, 0, sizeof(*p_cache->p_info) * control_count);
 	p_cache->cache_size_in_bytes = size_in_bytes;
 	p_cache->control_count = control_count;
 	p_cache->p_cache = p_dsp_control_buffer;

Re: [PATCH] ALSA: asihpi - use kzalloc()

[Takashi Iwai]

At Sat, 06 Aug 2011 13:26:20 +0200,
Thomas Meyer wrote:
> 
> From: Thomas Meyer <thomas@m3y3r.de>
> 
> 
>  Use kzalloc rather than kmalloc followed by memset with 0
> 
>  This considers some simple cases that are common and easy to validate
>  Note in particular that there are no ...s in the rule, so all of the
>  matched code has to be contiguous
> 
>  The semantic patch that makes this output is available
>  in scripts/coccinelle/api/alloc/kzalloc-simple.cocci.
> 
>  More information about semantic patching is available at
>  http://coccinelle.lip6.fr/
> 
> Signed-off-by: Thomas Meyer <thomas@m3y3r.de>

Applied now.  Thanks.


Takashi


> ---
> 
> diff -u -p a/sound/pci/asihpi/hpicmn.c b/sound/pci/asihpi/hpicmn.c
> --- a/sound/pci/asihpi/hpicmn.c 2011-07-26 00:46:12.970154018 +0200
> +++ b/sound/pci/asihpi/hpicmn.c 2011-08-01 20:42:34.859285236 +0200
> @@ -631,13 +631,12 @@ struct hpi_control_cache *hpi_alloc_cont
>  	if (!p_cache)
>  		return NULL;
>  
> -	p_cache->p_info =
> -		kmalloc(sizeof(*p_cache->p_info) * control_count, GFP_KERNEL);
> +	p_cache->p_info = kzalloc(sizeof(*p_cache->p_info) * control_count,
> +				  GFP_KERNEL);
>  	if (!p_cache->p_info) {
>  		kfree(p_cache);
>  		return NULL;
>  	}
> -	memset(p_cache->p_info, 0, sizeof(*p_cache->p_info) * control_count);
>  	p_cache->cache_size_in_bytes = size_in_bytes;
>  	p_cache->control_count = control_count;
>  	p_cache->p_cache = p_dsp_control_buffer;
> 
> 
>