linux-kernel - Re: [PATCH] drivers/acpi/battery.c cleanups

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Date:	Sun, 23 Jul 2006 09:48:52 +0159
From:	Jiri Slaby <jirislaby@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers/acpi/battery.c cleanups

Johannes Weiner napsal(a):
> Removed assignment casts, substituted kmalloc+memset with kzalloc, made
> functions void if they never return a value. Style adjustments.
> 
> Signed-off-by: Johannes Weiner <hnazfoo@...il.com>
> 
> ---
> 
> 
> ------------------------------------------------------------------------
> 
> diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
> index 6e52217..85f6a23 100644
> --- a/drivers/acpi/battery.c
> +++ b/drivers/acpi/battery.c
> @@ -147,7 +147,7 @@ acpi_battery_get_info(struct acpi_batter
>  		return -ENODEV;
>  	}
>  
> -	package = (union acpi_object *)buffer.pointer;
> +	package = buffer.pointer;
>  
>  	/* Extract Package Data */
>  
> @@ -158,12 +158,11 @@ acpi_battery_get_info(struct acpi_batter
>  		goto end;
>  	}
>  
> -	data.pointer = kmalloc(data.length, GFP_KERNEL);
> +	data.pointer = kzalloc(data.length, GFP_KERNEL);
>  	if (!data.pointer) {
>  		result = -ENOMEM;
>  		goto end;
>  	}
> -	memset(data.pointer, 0, data.length);
>  
>  	status = acpi_extract_package(package, &format, &data);
>  	if (ACPI_FAILURE(status)) {
> @@ -173,11 +172,11 @@ acpi_battery_get_info(struct acpi_batter
>  		goto end;
>  	}
>  
> -      end:
> +end:
>  	kfree(buffer.pointer);
>  
>  	if (!result)
> -		(*bif) = (struct acpi_battery_info *)data.pointer;
> +		(*bif) = data.pointer;

still unneeded ()

>  
>  	return result;
>  }
> @@ -207,7 +206,7 @@ acpi_battery_get_status(struct acpi_batt
>  		return -ENODEV;
>  	}
>  
> -	package = (union acpi_object *)buffer.pointer;
> +	package = buffer.pointer;
>  
>  	/* Extract Package Data */
>  
> @@ -218,12 +217,11 @@ acpi_battery_get_status(struct acpi_batt
>  		goto end;
>  	}
>  
> -	data.pointer = kmalloc(data.length, GFP_KERNEL);
> +	data.pointer = kzalloc(data.length, GFP_KERNEL);
>  	if (!data.pointer) {
>  		result = -ENOMEM;
>  		goto end;
>  	}
> -	memset(data.pointer, 0, data.length);
>  
>  	status = acpi_extract_package(package, &format, &data);
>  	if (ACPI_FAILURE(status)) {
> @@ -233,11 +231,11 @@ acpi_battery_get_status(struct acpi_batt
>  		goto end;
>  	}
>  
> -      end:
> +end:
>  	kfree(buffer.pointer);
>  
>  	if (!result)
> -		(*bst) = (struct acpi_battery_status *)data.pointer;
> +		(*bst) = data.pointer;

and here

regards,
-- 
<a href="http://www.fi.muni.cz/~xslaby/">Jiri Slaby</a>
faculty of informatics, masaryk university, brno, cz
e-mail: jirislaby gmail com, gpg pubkey fingerprint:
B674 9967 0407 CE62 ACC8  22A0 32CC 55C3 39D4 7A7E
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