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Subject: media: platform: mediatek: vpu: fix NULL ptr dereference
Author:  Hans Verkuil <[email protected]>
Date:    Wed May 24 13:11:47 2023 +0100

If pdev is NULL, then it is still dereferenced.

This fixes this smatch warning:

drivers/media/platform/mediatek/vpu/mtk_vpu.c:570 vpu_load_firmware() warn: 
address of NULL pointer 'pdev'

Signed-off-by: Hans Verkuil <[email protected]>
Cc: Yunfei Dong <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

 drivers/media/platform/mediatek/vpu/mtk_vpu.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

---

diff --git a/drivers/media/platform/mediatek/vpu/mtk_vpu.c 
b/drivers/media/platform/mediatek/vpu/mtk_vpu.c
index 5e2bc286f168..1a95958a1f90 100644
--- a/drivers/media/platform/mediatek/vpu/mtk_vpu.c
+++ b/drivers/media/platform/mediatek/vpu/mtk_vpu.c
@@ -562,15 +562,17 @@ static int load_requested_vpu(struct mtk_vpu *vpu,
 int vpu_load_firmware(struct platform_device *pdev)
 {
        struct mtk_vpu *vpu;
-       struct device *dev = &pdev->dev;
+       struct device *dev;
        struct vpu_run *run;
        int ret;
 
        if (!pdev) {
-               dev_err(dev, "VPU platform device is invalid\n");
+               pr_err("VPU platform device is invalid\n");
                return -EINVAL;
        }
 
+       dev = &pdev->dev;
+
        vpu = platform_get_drvdata(pdev);
        run = &vpu->run;
 

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