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Re: [PATCH] Input: evdev: correct handling of memory allocation failure of evdev_client

From Dmitry Torokhov <dmitry.torokhov@gmail.com>
Newsgroups linux.kernel
Subject Re: [PATCH] Input: evdev: correct handling of memory allocation failure of evdev_client
Date 2016-01-28 00:50 +0100
Message-ID <qVI0x-2V1-1@gated-at.bofh.it> (permalink)
References <qUTr3-7vm-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Hi Aniroop,

On Mon, Jan 25, 2016 at 11:20:05PM +0530, Aniroop Mathur wrote:
> Lets fix twice checking of memory allocation failure of evdev_client
> structure when allocated successfully.

I think compiler will take care of optimizing away the 2nd check, so I'd
leave the code as is.

Thanks.

> 
> Signed-off-by: Aniroop Mathur <a.mathur@samsung.com>
> ---
>  drivers/input/evdev.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
> index e9ae3d5..102b5d9 100644
> --- a/drivers/input/evdev.c
> +++ b/drivers/input/evdev.c
> @@ -503,10 +503,11 @@ static int evdev_open(struct inode *inode, struct file *file)
>  	int error;
>  
>  	client = kzalloc(size, GFP_KERNEL | __GFP_NOWARN);
> -	if (!client)
> +	if (!client) {
>  		client = vzalloc(size);
> -	if (!client)
> -		return -ENOMEM;
> +		if (!client)
> +			return -ENOMEM;
> +	}
>  
>  	client->bufsize = bufsize;
>  	spin_lock_init(&client->buffer_lock);
> -- 
> 2.6.2
> 

-- 
Dmitry

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[PATCH] Input: evdev: correct handling of memory allocation failure of evdev_client Aniroop Mathur <a.mathur@samsung.com> - 2016-01-25 18:50 +0100
  Re: [PATCH] Input: evdev: correct handling of memory allocation  failure of evdev_client Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2016-01-28 00:50 +0100

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