Re: [PATCH] axis-fifo: use devm_kasprintf for device name

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Sun, May 14, 2023 at 03:10:27AM +0530, Prathu Baronia wrote:
> - Replaces devm_kzalloc and snprintf combo.
> - Also made the fops alignment proper.
> 
> Signed-off-by: Prathu Baronia <prathubaronia2011@gmail.com>
> ---
>  drivers/staging/axis-fifo/axis-fifo.c | 16 +++++++---------
>  1 file changed, 7 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/staging/axis-fifo/axis-fifo.c b/drivers/staging/axis-fifo/axis-fifo.c
> index dfd2b357f484..8b46699efb34 100644
> --- a/drivers/staging/axis-fifo/axis-fifo.c
> +++ b/drivers/staging/axis-fifo/axis-fifo.c
> @@ -720,11 +720,11 @@ static int axis_fifo_close(struct inode *inod, struct file *f)
>  }
>  
>  static const struct file_operations fops = {
> -	.owner = THIS_MODULE,
> -	.open = axis_fifo_open,
> +	.owner   = THIS_MODULE,
> +	.open    = axis_fifo_open,
>  	.release = axis_fifo_close,
> -	.read = axis_fifo_read,
> -	.write = axis_fifo_write
> +	.read    = axis_fifo_read,
> +	.write   = axis_fifo_write
>  };
>  
>  /* read named property from the device tree */
> @@ -820,10 +820,6 @@ static int axis_fifo_probe(struct platform_device *pdev)
>  	 * ----------------------------
>  	 */
>  
> -	device_name = devm_kzalloc(dev, 32, GFP_KERNEL);
> -	if (!device_name)
> -		return -ENOMEM;
> -
>  	/* allocate device wrapper memory */
>  	fifo = devm_kzalloc(dev, sizeof(*fifo), GFP_KERNEL);
>  	if (!fifo)
> @@ -861,7 +857,9 @@ static int axis_fifo_probe(struct platform_device *pdev)
>  	dev_dbg(fifo->dt_device, "remapped memory to 0x%p\n", fifo->base_addr);
>  
>  	/* create unique device name */
> -	snprintf(device_name, 32, "%s_%pa", DRIVER_NAME, &r_mem->start);
> +	device_name = devm_kasprintf(dev, GFP_KERNEL, "%s_%pa", DRIVER_NAME, &r_mem->start);
> +	if (!device_name)
> +		return -ENOMEM;
>  	dev_dbg(fifo->dt_device, "device name [%s]\n", device_name);
>  
>  	/* ----------------------------
> -- 
> 2.34.1
> 
> 

Hi,

This is the friendly patch-bot of Greg Kroah-Hartman.  You have sent him
a patch that has triggered this response.  He used to manually respond
to these common problems, but in order to save his sanity (he kept
writing the same thing over and over, yet to different people), I was
created.  Hopefully you will not take offence and will fix the problem
in your patch and resubmit it so that it can be accepted into the Linux
kernel tree.

You are receiving this message because of the following common error(s)
as indicated below:

- Your patch did many different things all at once, making it difficult
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If you wish to discuss this problem further, or you have questions about
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thanks,

greg k-h's patch email bot