Re: [PATCH net-next v3 1/5] net: ipqess: introduce the Qualcomm IPQESS driver

[kernel test robot <lkp@intel.com>]

Hi Maxime,

I love your patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Maxime-Chevallier/net-ipqess-introduce-Qualcomm-IPQESS-driver/20220826-234846
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 44387d1736c40a74085be354e2b5f37ca0689608
config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20220827/202208270327.kMRdLLxb-lkp@intel.com/config)
compiler: arceb-elf-gcc (GCC) 12.1.0
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
        # https://github.com/intel-lab-lkp/linux/commit/7a04850338791b6a0d192df5be0e4317e6961fc4
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Maxime-Chevallier/net-ipqess-introduce-Qualcomm-IPQESS-driver/20220826-234846
        git checkout 7a04850338791b6a0d192df5be0e4317e6961fc4
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arc SHELL=/bin/bash drivers/net/ethernet/qualcomm/ipqess/

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

All warnings (new ones prefixed by >>):

   In file included from include/linux/device.h:15,
                    from include/linux/dma-mapping.h:7,
                    from include/linux/skbuff.h:31,
                    from include/net/net_namespace.h:43,
                    from include/linux/netdevice.h:38,
                    from include/linux/if_vlan.h:10,
                    from drivers/net/ethernet/qualcomm/ipqess/ipqess.c:12:
   drivers/net/ethernet/qualcomm/ipqess/ipqess.c: In function 'ipqess_rx_buf_prepare':
   drivers/net/ethernet/qualcomm/ipqess/ipqess.c:180:30: warning: format '%x' expects argument of type 'unsigned int', but argument 3 has type 'dma_addr_t' {aka 'long long unsigned int'} [-Wformat=]
     180 |                              "IPQESS DMA mapping failed for linear address %x",
         |                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/dev_printk.h:110:30: note: in definition of macro 'dev_printk_index_wrap'
     110 |                 _p_func(dev, fmt, ##__VA_ARGS__);                       \
         |                              ^~~
   include/linux/dev_printk.h:144:56: note: in expansion of macro 'dev_fmt'
     144 |         dev_printk_index_wrap(_dev_err, KERN_ERR, dev, dev_fmt(fmt), ##__VA_ARGS__)
         |                                                        ^~~~~~~
   include/linux/dev_printk.h:174:17: note: in expansion of macro 'dev_err'
     174 |                 dev_level(dev, fmt, ##__VA_ARGS__);                     \
         |                 ^~~~~~~~~
   include/linux/dev_printk.h:192:9: note: in expansion of macro 'dev_level_once'
     192 |         dev_level_once(dev_err, dev, fmt, ##__VA_ARGS__)
         |         ^~~~~~~~~~~~~~
   drivers/net/ethernet/qualcomm/ipqess/ipqess.c:179:17: note: in expansion of macro 'dev_err_once'
     179 |                 dev_err_once(rx_ring->ppdev,
         |                 ^~~~~~~~~~~~
   drivers/net/ethernet/qualcomm/ipqess/ipqess.c:180:77: note: format string is defined here
     180 |                              "IPQESS DMA mapping failed for linear address %x",
         |                                                                            ~^
         |                                                                             |
         |                                                                             unsigned int
         |                                                                            %llx
>> drivers/net/ethernet/qualcomm/ipqess/ipqess.c:188:43: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
     188 |         rx_ring->hw_desc[rx_ring->head] = (struct ipqess_rx_desc *)buf->dma;
         |                                           ^


vim +188 drivers/net/ethernet/qualcomm/ipqess/ipqess.c

   170	
   171	static int ipqess_rx_buf_prepare(struct ipqess_buf *buf,
   172					 struct ipqess_rx_ring *rx_ring)
   173	{
   174		memset(buf->skb->data, 0, sizeof(struct ipqess_rx_desc));
   175	
   176		buf->dma = dma_map_single(rx_ring->ppdev, buf->skb->data,
   177					  IPQESS_RX_HEAD_BUFF_SIZE, DMA_FROM_DEVICE);
   178		if (dma_mapping_error(rx_ring->ppdev, buf->dma)) {
   179			dev_err_once(rx_ring->ppdev,
   180				     "IPQESS DMA mapping failed for linear address %x",
   181				     buf->dma);
   182			dev_kfree_skb_any(buf->skb);
   183			buf->skb = NULL;
   184			return -EFAULT;
   185		}
   186	
   187		buf->length = IPQESS_RX_HEAD_BUFF_SIZE;
 > 188		rx_ring->hw_desc[rx_ring->head] = (struct ipqess_rx_desc *)buf->dma;
   189		rx_ring->head = (rx_ring->head + 1) % IPQESS_RX_RING_SIZE;
   190	
   191		ipqess_m32(rx_ring->ess, IPQESS_RFD_PROD_IDX_BITS,
   192			   (rx_ring->head + IPQESS_RX_RING_SIZE - 1) % IPQESS_RX_RING_SIZE,
   193			   IPQESS_REG_RFD_IDX_Q(rx_ring->idx));
   194	
   195		return 0;
   196	}
   197	

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