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Date:   Sun, 27 Dec 2020 02:42:49 +0800
From:   kernel test robot <lkp@...el.com>
To:     Carl Huang <cjhuang@...eaurora.org>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org, Kalle Valo <kvalo@...eaurora.org>
Subject: drivers/net/wireless/ath/ath11k/ahb.c:938:15: warning: cast to
 smaller integer type 'enum ath11k_hw_rev' from 'const void

Hi Carl,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   40f78232f97344afbbeb5b0008615f17c4b93466
commit: 322b60ceb0f321b4b9c41717f7306c0dbaf0279b ath11k: do not depend on ARCH_QCOM for ath11k
date:   4 months ago
config: x86_64-randconfig-a014-20201227 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project cee1e7d14f4628d6174b33640d502bff3b54ae45)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=322b60ceb0f321b4b9c41717f7306c0dbaf0279b
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 322b60ceb0f321b4b9c41717f7306c0dbaf0279b
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> drivers/net/wireless/ath/ath11k/ahb.c:938:15: warning: cast to smaller integer type 'enum ath11k_hw_rev' from 'const void *' [-Wvoid-pointer-to-enum-cast]
           ab->hw_rev = (enum ath11k_hw_rev)of_id->data;
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   1 warning generated.


vim +938 drivers/net/wireless/ath/ath11k/ahb.c

31858805f91ac79 Govind Singh    2020-05-08  903  
d5c65159f289537 Kalle Valo      2019-11-23  904  static int ath11k_ahb_probe(struct platform_device *pdev)
d5c65159f289537 Kalle Valo      2019-11-23  905  {
d5c65159f289537 Kalle Valo      2019-11-23  906  	struct ath11k_base *ab;
d5c65159f289537 Kalle Valo      2019-11-23  907  	const struct of_device_id *of_id;
d5c65159f289537 Kalle Valo      2019-11-23  908  	struct resource *mem_res;
d5c65159f289537 Kalle Valo      2019-11-23  909  	void __iomem *mem;
d5c65159f289537 Kalle Valo      2019-11-23  910  	int ret;
d5c65159f289537 Kalle Valo      2019-11-23  911  
d5c65159f289537 Kalle Valo      2019-11-23  912  	of_id = of_match_device(ath11k_ahb_of_match, &pdev->dev);
d5c65159f289537 Kalle Valo      2019-11-23  913  	if (!of_id) {
d5c65159f289537 Kalle Valo      2019-11-23  914  		dev_err(&pdev->dev, "failed to find matching device tree id\n");
d5c65159f289537 Kalle Valo      2019-11-23  915  		return -EINVAL;
d5c65159f289537 Kalle Valo      2019-11-23  916  	}
d5c65159f289537 Kalle Valo      2019-11-23  917  
c8ffcd122760612 Wei Yongjun     2020-05-08  918  	mem = devm_platform_get_and_ioremap_resource(pdev, 0, &mem_res);
d5c65159f289537 Kalle Valo      2019-11-23  919  	if (IS_ERR(mem)) {
d5c65159f289537 Kalle Valo      2019-11-23  920  		dev_err(&pdev->dev, "ioremap error\n");
d5c65159f289537 Kalle Valo      2019-11-23  921  		return PTR_ERR(mem);
d5c65159f289537 Kalle Valo      2019-11-23  922  	}
d5c65159f289537 Kalle Valo      2019-11-23  923  
d5c65159f289537 Kalle Valo      2019-11-23  924  	ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
d5c65159f289537 Kalle Valo      2019-11-23  925  	if (ret) {
d5c65159f289537 Kalle Valo      2019-11-23  926  		dev_err(&pdev->dev, "failed to set 32-bit consistent dma\n");
d5c65159f289537 Kalle Valo      2019-11-23  927  		return ret;
d5c65159f289537 Kalle Valo      2019-11-23  928  	}
d5c65159f289537 Kalle Valo      2019-11-23  929  
630ad41c195c706 Govind Singh    2020-05-08  930  	ab = ath11k_core_alloc(&pdev->dev, 0, ATH11K_BUS_AHB);
d5c65159f289537 Kalle Valo      2019-11-23  931  	if (!ab) {
d5c65159f289537 Kalle Valo      2019-11-23  932  		dev_err(&pdev->dev, "failed to allocate ath11k base\n");
d5c65159f289537 Kalle Valo      2019-11-23  933  		return -ENOMEM;
d5c65159f289537 Kalle Valo      2019-11-23  934  	}
d5c65159f289537 Kalle Valo      2019-11-23  935  
31858805f91ac79 Govind Singh    2020-05-08  936  	ab->hif.ops = &ath11k_ahb_hif_ops;
d5c65159f289537 Kalle Valo      2019-11-23  937  	ab->pdev = pdev;
d5c65159f289537 Kalle Valo      2019-11-23 @938  	ab->hw_rev = (enum ath11k_hw_rev)of_id->data;
d5c65159f289537 Kalle Valo      2019-11-23  939  	ab->mem = mem;
d5c65159f289537 Kalle Valo      2019-11-23  940  	ab->mem_len = resource_size(mem_res);
d5c65159f289537 Kalle Valo      2019-11-23  941  	platform_set_drvdata(pdev, ab);
d5c65159f289537 Kalle Valo      2019-11-23  942  
d5c65159f289537 Kalle Valo      2019-11-23  943  	ret = ath11k_hal_srng_init(ab);
d5c65159f289537 Kalle Valo      2019-11-23  944  	if (ret)
d5c65159f289537 Kalle Valo      2019-11-23  945  		goto err_core_free;
d5c65159f289537 Kalle Valo      2019-11-23  946  
d5c65159f289537 Kalle Valo      2019-11-23  947  	ret = ath11k_ce_alloc_pipes(ab);
d5c65159f289537 Kalle Valo      2019-11-23  948  	if (ret) {
d5c65159f289537 Kalle Valo      2019-11-23  949  		ath11k_err(ab, "failed to allocate ce pipes: %d\n", ret);
d5c65159f289537 Kalle Valo      2019-11-23  950  		goto err_hal_srng_deinit;
d5c65159f289537 Kalle Valo      2019-11-23  951  	}
d5c65159f289537 Kalle Valo      2019-11-23  952  
d5c65159f289537 Kalle Valo      2019-11-23  953  	ath11k_ahb_init_qmi_ce_config(ab);
d5c65159f289537 Kalle Valo      2019-11-23  954  
166e22b38aa3bcd Anilkumar Kolli 2020-06-16  955  	ret = ath11k_core_init(ab);
d5c65159f289537 Kalle Valo      2019-11-23  956  	if (ret) {
166e22b38aa3bcd Anilkumar Kolli 2020-06-16  957  		ath11k_err(ab, "failed to init core: %d\n", ret);
d5c65159f289537 Kalle Valo      2019-11-23  958  		goto err_ce_free;
d5c65159f289537 Kalle Valo      2019-11-23  959  	}
d5c65159f289537 Kalle Valo      2019-11-23  960  
166e22b38aa3bcd Anilkumar Kolli 2020-06-16  961  	ret = ath11k_ahb_config_irq(ab);
d5c65159f289537 Kalle Valo      2019-11-23  962  	if (ret) {
166e22b38aa3bcd Anilkumar Kolli 2020-06-16  963  		ath11k_err(ab, "failed to configure irq: %d\n", ret);
d5c65159f289537 Kalle Valo      2019-11-23  964  		goto err_ce_free;
d5c65159f289537 Kalle Valo      2019-11-23  965  	}
d5c65159f289537 Kalle Valo      2019-11-23  966  
d5c65159f289537 Kalle Valo      2019-11-23  967  	return 0;
d5c65159f289537 Kalle Valo      2019-11-23  968  
d5c65159f289537 Kalle Valo      2019-11-23  969  err_ce_free:
d5c65159f289537 Kalle Valo      2019-11-23  970  	ath11k_ce_free_pipes(ab);
d5c65159f289537 Kalle Valo      2019-11-23  971  
d5c65159f289537 Kalle Valo      2019-11-23  972  err_hal_srng_deinit:
d5c65159f289537 Kalle Valo      2019-11-23  973  	ath11k_hal_srng_deinit(ab);
d5c65159f289537 Kalle Valo      2019-11-23  974  
d5c65159f289537 Kalle Valo      2019-11-23  975  err_core_free:
d5c65159f289537 Kalle Valo      2019-11-23  976  	ath11k_core_free(ab);
d5c65159f289537 Kalle Valo      2019-11-23  977  	platform_set_drvdata(pdev, NULL);
d5c65159f289537 Kalle Valo      2019-11-23  978  
d5c65159f289537 Kalle Valo      2019-11-23  979  	return ret;
d5c65159f289537 Kalle Valo      2019-11-23  980  }
d5c65159f289537 Kalle Valo      2019-11-23  981  

:::::: The code at line 938 was first introduced by commit
:::::: d5c65159f2895379e11ca13f62feabe93278985d ath11k: driver for Qualcomm IEEE 802.11ax devices

:::::: TO: Kalle Valo <kvalo@...eaurora.org>
:::::: CC: Kalle Valo <kvalo@...eaurora.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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