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From: Mark yao <mark.yao@rock-chips.com>
To: "Gustavo A. R. Silva" <garsilva@embeddedor.com>,
	David Airlie <airlied@linux.ie>, Heiko Stuebner <heiko@sntech.de>
Cc: linux-rockchip@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] drm/rockchip: fix NULL check on devm_kzalloc() return value
Date: Fri, 7 Jul 2017 08:56:28 +0800	[thread overview]
Message-ID: <595EDC3C.1010801@rock-chips.com> (raw)
In-Reply-To: <20170706215833.GA25411@embeddedgus>

On 2017年07月07日 05:58, Gustavo A. R. Silva wrote:
> The right variable to check here is port, not dp.
>
> This issue was detected using Coccinelle and the following semantic patch:
>
> @@
> expression x;
> identifier fld;
> @@
>
> * x = devm_kzalloc(...);
>    ... when != x == NULL
>    x->fld
>
> Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>

Thanks for the fix,

Acked-by: Mark Yao <mark.yao@rock-chips.com>

> ---
>   drivers/gpu/drm/rockchip/cdn-dp-core.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c
> index 14fa1f8..9b0b058 100644
> --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
> +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
> @@ -1195,7 +1195,7 @@ static int cdn_dp_probe(struct platform_device *pdev)
>   			continue;
>   
>   		port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL);
> -		if (!dp)
> +		if (!port)
>   			return -ENOMEM;
>   
>   		port->extcon = extcon;


-- 
Ｍark Yao


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dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

WARNING: multiple messages have this Message-ID (diff)
From: mark.yao@rock-chips.com (Mark yao)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] drm/rockchip: fix NULL check on devm_kzalloc() return value
Date: Fri, 7 Jul 2017 08:56:28 +0800	[thread overview]
Message-ID: <595EDC3C.1010801@rock-chips.com> (raw)
In-Reply-To: <20170706215833.GA25411@embeddedgus>

On 2017?07?07? 05:58, Gustavo A. R. Silva wrote:
> The right variable to check here is port, not dp.
>
> This issue was detected using Coccinelle and the following semantic patch:
>
> @@
> expression x;
> identifier fld;
> @@
>
> * x = devm_kzalloc(...);
>    ... when != x == NULL
>    x->fld
>
> Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>

Thanks for the fix,

Acked-by: Mark Yao <mark.yao@rock-chips.com>

> ---
>   drivers/gpu/drm/rockchip/cdn-dp-core.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c
> index 14fa1f8..9b0b058 100644
> --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
> +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
> @@ -1195,7 +1195,7 @@ static int cdn_dp_probe(struct platform_device *pdev)
>   			continue;
>   
>   		port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL);
> -		if (!dp)
> +		if (!port)
>   			return -ENOMEM;
>   
>   		port->extcon = extcon;


-- 
?ark Yao

WARNING: multiple messages have this Message-ID (diff)
From: Mark yao <mark.yao@rock-chips.com>
To: "Gustavo A. R. Silva" <garsilva@embeddedor.com>,
	David Airlie <airlied@linux.ie>, Heiko Stuebner <heiko@sntech.de>
Cc: dri-devel@lists.freedesktop.org,
	linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] drm/rockchip: fix NULL check on devm_kzalloc() return value
Date: Fri, 7 Jul 2017 08:56:28 +0800	[thread overview]
Message-ID: <595EDC3C.1010801@rock-chips.com> (raw)
In-Reply-To: <20170706215833.GA25411@embeddedgus>

On 2017年07月07日 05:58, Gustavo A. R. Silva wrote:
> The right variable to check here is port, not dp.
>
> This issue was detected using Coccinelle and the following semantic patch:
>
> @@
> expression x;
> identifier fld;
> @@
>
> * x = devm_kzalloc(...);
>    ... when != x == NULL
>    x->fld
>
> Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>

Thanks for the fix,

Acked-by: Mark Yao <mark.yao@rock-chips.com>

> ---
>   drivers/gpu/drm/rockchip/cdn-dp-core.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c
> index 14fa1f8..9b0b058 100644
> --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
> +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
> @@ -1195,7 +1195,7 @@ static int cdn_dp_probe(struct platform_device *pdev)
>   			continue;
>   
>   		port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL);
> -		if (!dp)
> +		if (!port)
>   			return -ENOMEM;
>   
>   		port->extcon = extcon;


-- 
Ｍark Yao

  reply	other threads:[~2017-07-07  0:56 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-07-06 21:58 [PATCH] drm/rockchip: fix NULL check on devm_kzalloc() return value Gustavo A. R. Silva
2017-07-06 21:58 ` Gustavo A. R. Silva
2017-07-07  0:56 ` Mark yao [this message]
2017-07-07  0:56   ` Mark yao
2017-07-07  0:56   ` Mark yao
2017-07-10 19:04   ` Sean Paul
2017-07-10 19:04     ` Sean Paul
2017-07-10 19:04     ` Sean Paul
2017-07-11  0:44     ` Mark yao
2017-07-11  0:44       ` Mark yao
2017-07-11  0:44       ` Mark yao

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