[arnd-playground:headers-clean-test 3/30] drivers/net/dsa/lantiq_gswip.c:1676:10: warning: assignment makes pointer from integer without a cast

[arnd-playground:headers-clean-test 3/30] drivers/net/dsa/lantiq_gswip.c:1676:10: warning: assignment makes pointer from integer without a cast

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git headers-clean-test
head:   a25b75e508f3199f82d682ff1c5d6968d3286581
commit: 293b42e6ba557e8e3b70d504f708aef7493b0d8d [3/30] headers: stop using linux/dma-mapping.h from linux/skbuff.h
config: x86_64-randconfig-a004-20200603 (attached as .config)
compiler: gcc-5 (Ubuntu 5.5.0-12ubuntu1) 5.5.0 20171010
reproduce (this is a W=1 build):
        git checkout 293b42e6ba557e8e3b70d504f708aef7493b0d8d
        # save the attached .config to linux build tree
        make W=1 ARCH=x86_64 

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

All warnings (new ones prefixed by >>, old ones prefixed by <<):

drivers/net/dsa/lantiq_gswip.c: In function 'gswip_gphy_fw_load':
drivers/net/dsa/lantiq_gswip.c:1676:12: error: implicit declaration of function 'dmam_alloc_coherent' [-Werror=implicit-function-declaration]
fw_addr = dmam_alloc_coherent(dev, size, &dma_addr, GFP_KERNEL);
^
>> drivers/net/dsa/lantiq_gswip.c:1676:10: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
fw_addr = dmam_alloc_coherent(dev, size, &dma_addr, GFP_KERNEL);
^
cc1: some warnings being treated as errors

vim +1676 drivers/net/dsa/lantiq_gswip.c

14fceff4771e51 Hauke Mehrtens 2018-09-09  1647  
14fceff4771e51 Hauke Mehrtens 2018-09-09  1648  static int gswip_gphy_fw_load(struct gswip_priv *priv, struct gswip_gphy_fw *gphy_fw)
14fceff4771e51 Hauke Mehrtens 2018-09-09  1649  {
14fceff4771e51 Hauke Mehrtens 2018-09-09  1650  	struct device *dev = priv->dev;
14fceff4771e51 Hauke Mehrtens 2018-09-09  1651  	const struct firmware *fw;
14fceff4771e51 Hauke Mehrtens 2018-09-09  1652  	void *fw_addr;
14fceff4771e51 Hauke Mehrtens 2018-09-09  1653  	dma_addr_t dma_addr;
14fceff4771e51 Hauke Mehrtens 2018-09-09  1654  	dma_addr_t dev_addr;
14fceff4771e51 Hauke Mehrtens 2018-09-09  1655  	size_t size;
14fceff4771e51 Hauke Mehrtens 2018-09-09  1656  	int ret;
14fceff4771e51 Hauke Mehrtens 2018-09-09  1657  
14fceff4771e51 Hauke Mehrtens 2018-09-09  1658  	ret = clk_prepare_enable(gphy_fw->clk_gate);
14fceff4771e51 Hauke Mehrtens 2018-09-09  1659  	if (ret)
14fceff4771e51 Hauke Mehrtens 2018-09-09  1660  		return ret;
14fceff4771e51 Hauke Mehrtens 2018-09-09  1661  
14fceff4771e51 Hauke Mehrtens 2018-09-09  1662  	reset_control_assert(gphy_fw->reset);
14fceff4771e51 Hauke Mehrtens 2018-09-09  1663  
14fceff4771e51 Hauke Mehrtens 2018-09-09  1664  	ret = request_firmware(&fw, gphy_fw->fw_name, dev);
14fceff4771e51 Hauke Mehrtens 2018-09-09  1665  	if (ret) {
14fceff4771e51 Hauke Mehrtens 2018-09-09  1666  		dev_err(dev, "failed to load firmware: %s, error: %i\n",
14fceff4771e51 Hauke Mehrtens 2018-09-09  1667  			gphy_fw->fw_name, ret);
14fceff4771e51 Hauke Mehrtens 2018-09-09  1668  		return ret;
14fceff4771e51 Hauke Mehrtens 2018-09-09  1669  	}
14fceff4771e51 Hauke Mehrtens 2018-09-09  1670  
14fceff4771e51 Hauke Mehrtens 2018-09-09  1671  	/* GPHY cores need the firmware code in a persistent and contiguous
14fceff4771e51 Hauke Mehrtens 2018-09-09  1672  	 * memory area with a 16 kB boundary aligned start address.
14fceff4771e51 Hauke Mehrtens 2018-09-09  1673  	 */
14fceff4771e51 Hauke Mehrtens 2018-09-09  1674  	size = fw->size + XRX200_GPHY_FW_ALIGN;
14fceff4771e51 Hauke Mehrtens 2018-09-09  1675  
14fceff4771e51 Hauke Mehrtens 2018-09-09 @1676  	fw_addr = dmam_alloc_coherent(dev, size, &dma_addr, GFP_KERNEL);
14fceff4771e51 Hauke Mehrtens 2018-09-09  1677  	if (fw_addr) {
14fceff4771e51 Hauke Mehrtens 2018-09-09  1678  		fw_addr = PTR_ALIGN(fw_addr, XRX200_GPHY_FW_ALIGN);
14fceff4771e51 Hauke Mehrtens 2018-09-09  1679  		dev_addr = ALIGN(dma_addr, XRX200_GPHY_FW_ALIGN);
14fceff4771e51 Hauke Mehrtens 2018-09-09  1680  		memcpy(fw_addr, fw->data, fw->size);
14fceff4771e51 Hauke Mehrtens 2018-09-09  1681  	} else {
14fceff4771e51 Hauke Mehrtens 2018-09-09  1682  		dev_err(dev, "failed to alloc firmware memory\n");
14fceff4771e51 Hauke Mehrtens 2018-09-09  1683  		release_firmware(fw);
14fceff4771e51 Hauke Mehrtens 2018-09-09  1684  		return -ENOMEM;
14fceff4771e51 Hauke Mehrtens 2018-09-09  1685  	}
14fceff4771e51 Hauke Mehrtens 2018-09-09  1686  
14fceff4771e51 Hauke Mehrtens 2018-09-09  1687  	release_firmware(fw);
14fceff4771e51 Hauke Mehrtens 2018-09-09  1688  
14fceff4771e51 Hauke Mehrtens 2018-09-09  1689  	ret = regmap_write(priv->rcu_regmap, gphy_fw->fw_addr_offset, dev_addr);
14fceff4771e51 Hauke Mehrtens 2018-09-09  1690  	if (ret)
14fceff4771e51 Hauke Mehrtens 2018-09-09  1691  		return ret;
14fceff4771e51 Hauke Mehrtens 2018-09-09  1692  
14fceff4771e51 Hauke Mehrtens 2018-09-09  1693  	reset_control_deassert(gphy_fw->reset);
14fceff4771e51 Hauke Mehrtens 2018-09-09  1694  
14fceff4771e51 Hauke Mehrtens 2018-09-09  1695  	return ret;
14fceff4771e51 Hauke Mehrtens 2018-09-09  1696  }
14fceff4771e51 Hauke Mehrtens 2018-09-09  1697  

:::::: The code at line 1676 was first introduced by commit
:::::: 14fceff4771e51b23b4485b575cf9e5b3414b89b net: dsa: Add Lantiq / Intel DSA driver for vrx200

:::::: TO: Hauke Mehrtens <hauke@hauke-m.de>
:::::: CC: David S. Miller <davem@davemloft.net>

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

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