drivers/gpu/drm/msm/adreno/a2xx_gpu.c:503 a2xx_gpu_init() warn: variable dereferenced before check 'pdev' (see line 500)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   d2c9a99135da931377240942d44f3dea104cedb8
commit: 491fadb2b818e1d900229a1f8243de6458381306 drm/msm/adreno: Move adreno_gpu_func to catalogue
date:   8 months ago
config: arm64-randconfig-r072-20260703 (https://download.01.org/0day-ci/archive/20260703/[email protected]/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
smatch: v0.5.0-9185-gbcc58b9c

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Fixes: 491fadb2b818 ("drm/msm/adreno: Move adreno_gpu_func to catalogue")
| Reported-by: kernel test robot <[email protected]>
| Reported-by: Dan Carpenter <[email protected]>
| Closes: https://lore.kernel.org/r/[email protected]/

smatch warnings:
drivers/gpu/drm/msm/adreno/a2xx_gpu.c:503 a2xx_gpu_init() warn: variable dereferenced before check 'pdev' (see line 500)
drivers/gpu/drm/msm/adreno/a4xx_gpu.c:642 a4xx_gpu_init() warn: variable dereferenced before check 'pdev' (see line 637)
drivers/gpu/drm/msm/adreno/a3xx_gpu.c:530 a3xx_gpu_init() warn: variable dereferenced before check 'pdev' (see line 525)

vim +/pdev +503 drivers/gpu/drm/msm/adreno/a2xx_gpu.c

491fadb2b818e1 Akhil P Oommen 2025-11-18  493  static struct msm_gpu *a2xx_gpu_init(struct drm_device *dev)
21af872cd8c695 Jonathan Marek 2018-11-21  494  {
21af872cd8c695 Jonathan Marek 2018-11-21  495  	struct a2xx_gpu *a2xx_gpu = NULL;
21af872cd8c695 Jonathan Marek 2018-11-21  496  	struct adreno_gpu *adreno_gpu;
21af872cd8c695 Jonathan Marek 2018-11-21  497  	struct msm_gpu *gpu;
21af872cd8c695 Jonathan Marek 2018-11-21  498  	struct msm_drm_private *priv = dev->dev_private;
21af872cd8c695 Jonathan Marek 2018-11-21  499  	struct platform_device *pdev = priv->gpu_pdev;
491fadb2b818e1 Akhil P Oommen 2025-11-18 @500  	struct adreno_platform_config *config = pdev->dev.platform_data;
                                                                                        ^^^^^^

21af872cd8c695 Jonathan Marek 2018-11-21  501  	int ret;
21af872cd8c695 Jonathan Marek 2018-11-21  502  
21af872cd8c695 Jonathan Marek 2018-11-21 @503  	if (!pdev) {
                                                    ^^^^^^
Hopefully, this code could be deleted.

21af872cd8c695 Jonathan Marek 2018-11-21  504  		dev_err(dev->dev, "no a2xx device\n");
21af872cd8c695 Jonathan Marek 2018-11-21  505  		ret = -ENXIO;
21af872cd8c695 Jonathan Marek 2018-11-21  506  		goto fail;
21af872cd8c695 Jonathan Marek 2018-11-21  507  	}
21af872cd8c695 Jonathan Marek 2018-11-21  508  

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