linux-kernel - Re: [PATCH] Cleanups for: line length, printk KERN_ argument, stack frame size > 2048 (added a kmalloc/kfree), style/formatting errors, incorrect include files

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Date:	Fri, 9 Oct 2009 14:23:03 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Bruce Beare <bbeare1@...il.com>
Cc:	Greg Kroah-Hartman <gregkh@...e.de>,
	Bill Pemberton <wfp5p@...ginia.edu>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Cleanups for: line length, printk KERN_ argument, stack
 frame size > 2048 (added a kmalloc/kfree), style/formatting errors,
 incorrect include files

On Fri,  9 Oct 2009 14:11:38 -0700 Bruce Beare wrote:

> ---
>  drivers/staging/comedi/drivers/serial2002.c |  342 +++++++++++---------------
>  1 files changed, 145 insertions(+), 197 deletions(-)
> 
> diff --git a/drivers/staging/comedi/drivers/serial2002.c b/drivers/staging/comedi/drivers/serial2002.c
> index a219679..0232186 100644
> --- a/drivers/staging/comedi/drivers/serial2002.c
> +++ b/drivers/staging/comedi/drivers/serial2002.c
> @@ -413,34 +408,37 @@ static void serial_2002_open(struct comedi_device *dev)
>  			int min;
>  			int max;
>  		};
> +		struct config_data_t {
> +			struct config_t dig_in_config[32];
> +			struct config_t dig_out_config[32];
> +			struct config_t chan_in_config[32];
> +			struct config_t chan_out_config[32];
> +		} *config_data = NULL;
>  
> -		struct config_t dig_in_config[32];
> -		struct config_t dig_out_config[32];
> -		struct config_t chan_in_config[32];
> -		struct config_t chan_out_config[32];
>  		int i;
> +		config_data = kmalloc(sizeof(struct config_data_t), GFP_KERNEL);

what happens when the kmalloc() fails??


>  
>  		for (i = 0; i < 32; i++) {
> -			dig_in_config[i].kind = 0;
> -			dig_in_config[i].bits = 0;
> -			dig_in_config[i].min = 0;
> -			dig_in_config[i].max = 0;
> -			dig_out_config[i].kind = 0;
> -			dig_out_config[i].bits = 0;
> -			dig_out_config[i].min = 0;
> -			dig_out_config[i].max = 0;
> -			chan_in_config[i].kind = 0;
> -			chan_in_config[i].bits = 0;
> -			chan_in_config[i].min = 0;
> -			chan_in_config[i].max = 0;
> -			chan_out_config[i].kind = 0;
> -			chan_out_config[i].bits = 0;
> -			chan_out_config[i].min = 0;
> -			chan_out_config[i].max = 0;
> +			config_data->dig_in_config[i].kind = 0;
> +			config_data->dig_in_config[i].bits = 0;
> +			config_data->dig_in_config[i].min = 0;
> +			config_data->dig_in_config[i].max = 0;
> +			config_data->dig_out_config[i].kind = 0;
> +			config_data->dig_out_config[i].bits = 0;
> +			config_data->dig_out_config[i].min = 0;
> +			config_data->dig_out_config[i].max = 0;
> +			config_data->chan_in_config[i].kind = 0;
> +			config_data->chan_in_config[i].bits = 0;
> +			config_data->chan_in_config[i].min = 0;
> +			config_data->chan_in_config[i].max = 0;
> +			config_data->chan_out_config[i].kind = 0;
> +			config_data->chan_out_config[i].bits = 0;
> +			config_data->chan_out_config[i].min = 0;
> +			config_data->chan_out_config[i].max = 0;
>  		}


---
~Randy
--
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