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

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Date:   Mon, 26 Jun 2023 22:33:30 +0800
From:   Sui Jingfeng <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:     dri-devel@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] drm/tegra: Return an error code if fails

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);
 
-- 
2.25.1