tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   996e435fd401de35df62ac943ab9402cfe85c430
commit: edac63861db72a462ccdfad0b5dfa66985d58bd5 net: macb: add userio bits as 
platform configuration
compiler: nios2-linux-gcc (GCC) 9.3.0

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


cppcheck possible warnings: (new ones prefixed by >>, may not real problems)

   drivers/net/ethernet/cadence/macb_main.c:2908:5: warning: %d in format 
string (no. 1) requires 'int' but the argument type is 'unsigned int'. 
[invalidPrintfArgType_sint]
       snprintf(stat_string, ETH_GSTRING_LEN, "q%d_%s",
       ^
>> drivers/net/ethernet/cadence/macb_main.c:4661:14: warning: Either the 
>> condition 'macb_config' is redundant or there is possible null pointer 
>> dereference: macb_config. [nullPointerRedundantCheck]
    bp->usrio = macb_config->usrio;
                ^
   drivers/net/ethernet/cadence/macb_main.c:4646:6: note: Assuming that 
condition 'macb_config' is not redundant
    if (macb_config)
        ^
   drivers/net/ethernet/cadence/macb_main.c:4661:14: note: Null pointer 
dereference
    bp->usrio = macb_config->usrio;
                ^

vim +/macb_config +4661 drivers/net/ethernet/cadence/macb_main.c

83a77e9ec4150ee drivers/net/ethernet/cadence/macb.c      Bartosz Folta          
       2016-12-14  4573  
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4574  static int macb_probe(struct platform_device *pdev)
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4575  {
83a77e9ec4150ee drivers/net/ethernet/cadence/macb.c      Bartosz Folta          
       2016-12-14  4576         const struct macb_config *macb_config = 
&default_gem_config;
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4577         int (*clk_init)(struct platform_device *, 
struct clk **,
f5473d1d44e4b42 drivers/net/ethernet/cadence/macb_main.c Harini Katakam         
       2019-03-01  4578                         struct clk **, struct clk **,  
struct clk **,
f5473d1d44e4b42 drivers/net/ethernet/cadence/macb_main.c Harini Katakam         
       2019-03-01  4579                         struct clk **) = 
macb_config->clk_init;
83a77e9ec4150ee drivers/net/ethernet/cadence/macb.c      Bartosz Folta          
       2016-12-14  4580         int (*init)(struct platform_device *) = 
macb_config->init;
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4581         struct device_node *np = pdev->dev.of_node;
aead88bd0e99054 drivers/net/ethernet/cadence/macb.c      
shubhrajyoti.da...@xilinx.com 2016-08-16  4582         struct clk *pclk, *hclk 
= NULL, *tx_clk = NULL, *rx_clk = NULL;
f5473d1d44e4b42 drivers/net/ethernet/cadence/macb_main.c Harini Katakam         
       2019-03-01  4583         struct clk *tsu_clk = NULL;
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4584         unsigned int queue_mask, num_queues;
f2ce8a9e48385f4 drivers/net/ethernet/cadence/macb.c      Andy Shevchenko        
       2015-07-24  4585         bool native_io;
0c65b2b90d13c1d drivers/net/ethernet/cadence/macb_main.c Andrew Lunn            
       2019-11-04  4586         phy_interface_t interface;
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4587         struct net_device *dev;
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4588         struct resource *regs;
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4589         void __iomem *mem;
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4590         const char *mac;
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4591         struct macb *bp;
404cd086f29e867 drivers/net/ethernet/cadence/macb_main.c Harini Katakam         
       2018-07-06  4592         int err, val;
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4593  
f2ce8a9e48385f4 drivers/net/ethernet/cadence/macb.c      Andy Shevchenko        
       2015-07-24  4594         regs = platform_get_resource(pdev, 
IORESOURCE_MEM, 0);
f2ce8a9e48385f4 drivers/net/ethernet/cadence/macb.c      Andy Shevchenko        
       2015-07-24  4595         mem = devm_ioremap_resource(&pdev->dev, regs);
f2ce8a9e48385f4 drivers/net/ethernet/cadence/macb.c      Andy Shevchenko        
       2015-07-24  4596         if (IS_ERR(mem))
f2ce8a9e48385f4 drivers/net/ethernet/cadence/macb.c      Andy Shevchenko        
       2015-07-24  4597                 return PTR_ERR(mem);
f2ce8a9e48385f4 drivers/net/ethernet/cadence/macb.c      Andy Shevchenko        
       2015-07-24  4598  
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4599         if (np) {
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4600                 const struct of_device_id *match;
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4601  
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4602                 match = of_match_node(macb_dt_ids, np);
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4603                 if (match && match->data) {
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4604                         macb_config = match->data;
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4605                         clk_init = 
macb_config->clk_init;
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4606                         init = macb_config->init;
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4607                 }
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4608         }
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4609  
f5473d1d44e4b42 drivers/net/ethernet/cadence/macb_main.c Harini Katakam         
       2019-03-01  4610         err = clk_init(pdev, &pclk, &hclk, &tx_clk, 
&rx_clk, &tsu_clk);
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4611         if (err)
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4612                 return err;
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4613  
d54f89af6cc4d6d drivers/net/ethernet/cadence/macb_main.c Harini Katakam         
       2019-03-01  4614         pm_runtime_set_autosuspend_delay(&pdev->dev, 
MACB_PM_TIMEOUT);
d54f89af6cc4d6d drivers/net/ethernet/cadence/macb_main.c Harini Katakam         
       2019-03-01  4615         pm_runtime_use_autosuspend(&pdev->dev);
d54f89af6cc4d6d drivers/net/ethernet/cadence/macb_main.c Harini Katakam         
       2019-03-01  4616         pm_runtime_get_noresume(&pdev->dev);
d54f89af6cc4d6d drivers/net/ethernet/cadence/macb_main.c Harini Katakam         
       2019-03-01  4617         pm_runtime_set_active(&pdev->dev);
d54f89af6cc4d6d drivers/net/ethernet/cadence/macb_main.c Harini Katakam         
       2019-03-01  4618         pm_runtime_enable(&pdev->dev);
f2ce8a9e48385f4 drivers/net/ethernet/cadence/macb.c      Andy Shevchenko        
       2015-07-24  4619         native_io = hw_is_native_io(mem);
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4620  
f2ce8a9e48385f4 drivers/net/ethernet/cadence/macb.c      Andy Shevchenko        
       2015-07-24  4621         macb_probe_queues(mem, native_io, &queue_mask, 
&num_queues);
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4622         dev = alloc_etherdev_mq(sizeof(*bp), 
num_queues);
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4623         if (!dev) {
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4624                 err = -ENOMEM;
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4625                 goto err_disable_clocks;
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4626         }
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4627  
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4628         dev->base_addr = regs->start;
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4629  
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4630         SET_NETDEV_DEV(dev, &pdev->dev);
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4631  
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4632         bp = netdev_priv(dev);
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4633         bp->pdev = pdev;
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4634         bp->dev = dev;
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4635         bp->regs = mem;
f2ce8a9e48385f4 drivers/net/ethernet/cadence/macb.c      Andy Shevchenko        
       2015-07-24  4636         bp->native_io = native_io;
f2ce8a9e48385f4 drivers/net/ethernet/cadence/macb.c      Andy Shevchenko        
       2015-07-24  4637         if (native_io) {
7a6e0706c09b121 drivers/net/ethernet/cadence/macb.c      David S. Miller        
       2015-07-27  4638                 bp->macb_reg_readl = hw_readl_native;
7a6e0706c09b121 drivers/net/ethernet/cadence/macb.c      David S. Miller        
       2015-07-27  4639                 bp->macb_reg_writel = hw_writel_native;
f2ce8a9e48385f4 drivers/net/ethernet/cadence/macb.c      Andy Shevchenko        
       2015-07-24  4640         } else {
7a6e0706c09b121 drivers/net/ethernet/cadence/macb.c      David S. Miller        
       2015-07-27  4641                 bp->macb_reg_readl = hw_readl;
7a6e0706c09b121 drivers/net/ethernet/cadence/macb.c      David S. Miller        
       2015-07-27  4642                 bp->macb_reg_writel = hw_writel;
f2ce8a9e48385f4 drivers/net/ethernet/cadence/macb.c      Andy Shevchenko        
       2015-07-24  4643         }
421d9df0628be16 drivers/net/ethernet/cadence/macb.c      Cyrille Pitchen        
       2015-03-07  4644         bp->num_queues = num_queues;
bfa0914afa95d44 drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4645         bp->queue_mask = queue_mask;
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4646         if (macb_config)
f6970505defd0e7 drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4647                 bp->dma_burst_length = 
macb_config->dma_burst_length;
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4648         bp->pclk = pclk;
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4649         bp->hclk = hclk;
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4650         bp->tx_clk = tx_clk;
aead88bd0e99054 drivers/net/ethernet/cadence/macb.c      
shubhrajyoti.da...@xilinx.com 2016-08-16  4651         bp->rx_clk = rx_clk;
f5473d1d44e4b42 drivers/net/ethernet/cadence/macb_main.c Harini Katakam         
       2019-03-01  4652         bp->tsu_clk = tsu_clk;
f36dbe6a285e062 drivers/net/ethernet/cadence/macb.c      Andy Shevchenko        
       2015-07-24  4653         if (macb_config)
98b5a0f4a2282fb drivers/net/ethernet/cadence/macb.c      Harini Katakam         
       2015-05-06  4654                 bp->jumbo_max_len = 
macb_config->jumbo_max_len;
98b5a0f4a2282fb drivers/net/ethernet/cadence/macb.c      Harini Katakam         
       2015-05-06  4655  
3e2a5e153906432 drivers/net/ethernet/cadence/macb.c      Sergio Prado           
       2016-02-09  4656         bp->wol = 0;
7c4a1d0cfdc169b drivers/net/ethernet/cadence/macb.c      Sergio Prado           
       2016-02-16  4657         if (of_get_property(np, "magic-packet", NULL))
3e2a5e153906432 drivers/net/ethernet/cadence/macb.c      Sergio Prado           
       2016-02-09  4658                 bp->wol |= MACB_WOL_HAS_MAGIC_PACKET;
ced4799d0637592 drivers/net/ethernet/cadence/macb_main.c Nicolas Ferre          
       2020-07-10  4659         device_set_wakeup_capable(&pdev->dev, bp->wol & 
MACB_WOL_HAS_MAGIC_PACKET);
3e2a5e153906432 drivers/net/ethernet/cadence/macb.c      Sergio Prado           
       2016-02-09  4660  
edac63861db72a4 drivers/net/ethernet/cadence/macb_main.c Claudiu Beznea         
       2020-12-09 @4661         bp->usrio = macb_config->usrio;
edac63861db72a4 drivers/net/ethernet/cadence/macb_main.c Claudiu Beznea         
       2020-12-09  4662  
c69618b3e4f220f drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4663         spin_lock_init(&bp->lock);
f6970505defd0e7 drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4664  
ad78347f06581e4 drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4665         /* setup capabilities */
f6970505defd0e7 drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4666         macb_configure_caps(bp, macb_config);
f6970505defd0e7 drivers/net/ethernet/cadence/macb.c      Nicolas Ferre          
       2015-03-31  4667  

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