linux-kernel - Re: [1/2] drm/tegra: Return an error code if fails

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Message-ID: <3dd819d8-69a1-f2e0-de53-5a4b2a6dd39d@loongson.cn>
Date:   Thu, 27 Jul 2023 18:02:54 +0800
From:   suijingfeng <suijingfeng@...ngson.cn>
To:     Thierry Reding <thierry.reding@...il.com>,
        Mikko Perttunen <mperttunen@...dia.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Jonathan Hunter <jonathanh@...dia.com>
Cc:     linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org
Subject: Re: [1/2] drm/tegra: Return an error code if fails

Hi,

Gentle ping for this series.


On 2023/6/26 22:33, Sui Jingfeng wrote:
> Return -ENOMEM if tegra_bo_mmap() fails.
>
> Signed-off-by: Sui Jingfeng <suijingfeng@...ngson.cn>
> ---
>   drivers/gpu/drm/tegra/gem.c | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c
> index dea38892d6e6..0ce22935fbd3 100644
> --- a/drivers/gpu/drm/tegra/gem.c
> +++ b/drivers/gpu/drm/tegra/gem.c
> @@ -710,6 +710,8 @@ static int tegra_gem_prime_vmap(struct dma_buf *buf, struct iosys_map *map)
>   	void *vaddr;
>   
>   	vaddr = tegra_bo_mmap(&bo->base);
> +	if (!vaddr)
> +		return -ENOMEM;
>   	if (IS_ERR(vaddr))
>   		return PTR_ERR(vaddr);
>