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Message-ID: <20160127234209.GF28687@dtor-ws>
Date: Wed, 27 Jan 2016 15:42:09 -0800
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: Aniroop Mathur <a.mathur@...sung.com>
Cc: linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
aniroop.mathur@...il.com
Subject: Re: [PATCH] Input: evdev: correct handling of memory allocation
failure of evdev_client
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@...sung.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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