linux-kernel - Re: [PATCH] drm/komeda: Fix error: not allocating enough data 1592 vs 1584

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Date:   Thu, 22 Aug 2019 10:32:03 +0000
From:   Ayan Halder <Ayan.Halder@....com>
To:     "james qian wang (Arm Technology China)" <james.qian.wang@....com>
CC:     Liviu Dudau <Liviu.Dudau@....com>,
        "airlied@...ux.ie" <airlied@...ux.ie>,
        Brian Starkey <Brian.Starkey@....com>,
        "maarten.lankhorst@...ux.intel.com" 
        <maarten.lankhorst@...ux.intel.com>,
        "sean@...rly.run" <sean@...rly.run>,
        "dan.carpenter@...cle.com" <dan.carpenter@...cle.com>,
        "Jonathan Chai (Arm Technology China)" <Jonathan.Chai@....com>,
        "Julien Yin (Arm Technology China)" <Julien.Yin@....com>,
        "Thomas Sun (Arm Technology China)" <thomas.Sun@....com>,
        "Lowry Li (Arm Technology China)" <Lowry.Li@....com>,
        "Tiannan Zhu (Arm Technology China)" <Tiannan.Zhu@....com>,
        "Yiqi Kang (Arm Technology China)" <Yiqi.Kang@....com>,
        nd <nd@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        Ben Davis <Ben.Davis@....com>,
        "Oscar Zhang (Arm Technology China)" <Oscar.Zhang@....com>,
        "Channing Chen (Arm Technology China)" <Channing.Chen@....com>,
        Mihail Atanassov <Mihail.Atanassov@....com>
Subject: Re: [PATCH] drm/komeda: Fix error: not allocating enough data 1592 vs
 1584

On Mon, Aug 19, 2019 at 08:01:57AM +0000, james qian wang (Arm Technology China) wrote:
> The patch 5d51f6c0da1b: "drm/komeda: Add writeback support" from May
> 23, 2019, leads to the following static checker warning:
> 
>         drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c:151 komeda_wb_connector_add()
>         error: not allocating enough data 1592 vs 1584
> 
> This is a typo which misuse "wb_conn" but which should be "kwb_conn" to
> allocate the memory.
> 
> Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
> Signed-off-by: james qian wang (Arm Technology China) <james.qian.wang@....com>
> ---
>  drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c b/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c
> index 617e1f7b8472..2851cac94d86 100644
> --- a/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c
> @@ -148,7 +148,7 @@ static int komeda_wb_connector_add(struct komeda_kms_dev *kms,
>  	if (!kcrtc->master->wb_layer)
>  		return 0;
>  
> -	kwb_conn = kzalloc(sizeof(*wb_conn), GFP_KERNEL);
> +	kwb_conn = kzalloc(sizeof(*kwb_conn), GFP_KERNEL);
>  	if (!kwb_conn)
>  		return -ENOMEM;
>  
> --
Reviewed-by: Ayan Kumar Halder <ayan.halder@....com> 
> 2.20.1