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Date:   Thu, 11 Aug 2022 11:06:29 +0200
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Dongliang Mu <dzm91@hust.edu.cn>
Cc:     Dongliang Mu <mudongliangabcd@gmail.com>,
        linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 2/2] USB: trancevibrator: simplify tv_probe
Message-ID: <YvTGlV/RIN1QCce8@kroah.com>
References: <20220811090213.35899-1-dzm91@hust.edu.cn>
 <20220811090213.35899-2-dzm91@hust.edu.cn>
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On Thu, Aug 11, 2022 at 05:02:09PM +0800, Dongliang Mu wrote:
> From: Dongliang Mu <mudongliangabcd@gmail.com>
> 
> The function tv_probe does not need to invoke kfree when the
> allocation fails. So let's simplify the code of tv_probe.
> 
> Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
> ---
>  drivers/usb/misc/trancevibrator.c | 11 ++---------
>  1 file changed, 2 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/usb/misc/trancevibrator.c b/drivers/usb/misc/trancevibrator.c
> index 55cb63652eda..30d4d774d448 100644
> --- a/drivers/usb/misc/trancevibrator.c
> +++ b/drivers/usb/misc/trancevibrator.c
> @@ -84,22 +84,15 @@ static int tv_probe(struct usb_interface *interface,
>  {
>  	struct usb_device *udev = interface_to_usbdev(interface);
>  	struct trancevibrator *dev;
> -	int retval;
>  
>  	dev = kzalloc(sizeof(struct trancevibrator), GFP_KERNEL);
> -	if (!dev) {
> -		retval = -ENOMEM;
> -		goto error;
> -	}
> +	if (!dev)
> +		return -ENOMEM;
>  
>  	dev->udev = usb_get_dev(udev);
>  	usb_set_intfdata(interface, dev);
>  
>  	return 0;
> -
> -error:
> -	kfree(dev);
> -	return retval;
>  }
>  
>  static void tv_disconnect(struct usb_interface *interface)
> -- 
> 2.35.1
> 


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:

- This looks like a new version of a previously submitted patch, but you
  did not list below the --- line any changes from the previous version.
  Please read the section entitled "The canonical patch format" in the
  kernel file, Documentation/SubmittingPatches for what needs to be done
  here to properly describe this.

If you wish to discuss this problem further, or you have questions about
how to resolve this issue, please feel free to respond to this email and
Greg will reply once he has dug out from the pending patches received
from other developers.

thanks,

greg k-h's patch email bot