Hi Thomas,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   1b929c02afd37871d5afb9d498426f83432e71c2
commit: 6ef92063bf94cd8a6fa9fea3a82596955eb25424 net: korina: Make driver COMPILE_TESTable
date:   1 year, 8 months ago
config: mips-randconfig-s051-20221227
compiler: mips64-linux-gcc (GCC) 12.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6ef92063bf94cd8a6fa9fea3a82596955eb25424
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 6ef92063bf94cd8a6fa9fea3a82596955eb25424
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=mips olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=mips SHELL=/bin/bash drivers/net/ethernet/

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

sparse warnings: (new ones prefixed by >>)
   drivers/net/ethernet/korina.c:408:33: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected struct dma_reg *ch @@     got struct dma_reg [noderef] __iomem *tx_dma_regs @@
   drivers/net/ethernet/korina.c:408:33: sparse:     expected struct dma_reg *ch
   drivers/net/ethernet/korina.c:408:33: sparse:     got struct dma_reg [noderef] __iomem *tx_dma_regs
   drivers/net/ethernet/korina.c:415:33: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected struct dma_reg *ch @@     got struct dma_reg [noderef] __iomem *rx_dma_regs @@
   drivers/net/ethernet/korina.c:415:33: sparse:     expected struct dma_reg *ch
   drivers/net/ethernet/korina.c:415:33: sparse:     got struct dma_reg [noderef] __iomem *rx_dma_regs
>> drivers/net/ethernet/korina.c:391:20: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *mem @@     got unsigned int * @@
   drivers/net/ethernet/korina.c:391:20: sparse:     expected void const volatile [noderef] __iomem *mem
   drivers/net/ethernet/korina.c:391:20: sparse:     got unsigned int *
>> drivers/net/ethernet/korina.c:392:31: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *mem @@     got unsigned int * @@
   drivers/net/ethernet/korina.c:392:31: sparse:     expected void volatile [noderef] __iomem *mem
   drivers/net/ethernet/korina.c:392:31: sparse:     got unsigned int *
   drivers/net/ethernet/korina.c:394:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *mem @@     got unsigned int * @@
   drivers/net/ethernet/korina.c:394:33: sparse:     expected void const volatile [noderef] __iomem *mem
   drivers/net/ethernet/korina.c:394:33: sparse:     got unsigned int *
   drivers/net/ethernet/korina.c:397:28: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *mem @@     got unsigned int * @@
   drivers/net/ethernet/korina.c:397:28: sparse:     expected void volatile [noderef] __iomem *mem
   drivers/net/ethernet/korina.c:397:28: sparse:     got unsigned int *
   drivers/net/ethernet/korina.c:400:20: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *mem @@     got unsigned int * @@
   drivers/net/ethernet/korina.c:400:20: sparse:     expected void volatile [noderef] __iomem *mem
   drivers/net/ethernet/korina.c:400:20: sparse:     got unsigned int *
   drivers/net/ethernet/korina.c:401:20: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *mem @@     got unsigned int * @@
   drivers/net/ethernet/korina.c:401:20: sparse:     expected void volatile [noderef] __iomem *mem
   drivers/net/ethernet/korina.c:401:20: sparse:     got unsigned int *
>> drivers/net/ethernet/korina.c:391:20: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *mem @@     got unsigned int * @@
   drivers/net/ethernet/korina.c:391:20: sparse:     expected void const volatile [noderef] __iomem *mem
   drivers/net/ethernet/korina.c:391:20: sparse:     got unsigned int *
>> drivers/net/ethernet/korina.c:392:31: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *mem @@     got unsigned int * @@
   drivers/net/ethernet/korina.c:392:31: sparse:     expected void volatile [noderef] __iomem *mem
   drivers/net/ethernet/korina.c:392:31: sparse:     got unsigned int *
   drivers/net/ethernet/korina.c:394:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *mem @@     got unsigned int * @@
   drivers/net/ethernet/korina.c:394:33: sparse:     expected void const volatile [noderef] __iomem *mem
   drivers/net/ethernet/korina.c:394:33: sparse:     got unsigned int *
   drivers/net/ethernet/korina.c:397:28: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *mem @@     got unsigned int * @@
   drivers/net/ethernet/korina.c:397:28: sparse:     expected void volatile [noderef] __iomem *mem
   drivers/net/ethernet/korina.c:397:28: sparse:     got unsigned int *
   drivers/net/ethernet/korina.c:400:20: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *mem @@     got unsigned int * @@
   drivers/net/ethernet/korina.c:400:20: sparse:     expected void volatile [noderef] __iomem *mem
   drivers/net/ethernet/korina.c:400:20: sparse:     got unsigned int *
   drivers/net/ethernet/korina.c:401:20: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *mem @@     got unsigned int * @@
   drivers/net/ethernet/korina.c:401:20: sparse:     expected void volatile [noderef] __iomem *mem
   drivers/net/ethernet/korina.c:401:20: sparse:     got unsigned int *

vim +391 drivers/net/ethernet/korina.c

0fc96939a97ffd drivers/net/ethernet/korina.c Thomas Bogendoerfer 2021-04-19  387  
ef11291bcd5f96 drivers/net/korina.c          Florian Fainelli    2008-03-19  388  static inline void korina_abort_dma(struct net_device *dev,
ef11291bcd5f96 drivers/net/korina.c          Florian Fainelli    2008-03-19  389  					struct dma_reg *ch)
ef11291bcd5f96 drivers/net/korina.c          Florian Fainelli    2008-03-19  390  {
ef11291bcd5f96 drivers/net/korina.c          Florian Fainelli    2008-03-19 @391  	if (readl(&ch->dmac) & DMA_CHAN_RUN_BIT) {
ef11291bcd5f96 drivers/net/korina.c          Florian Fainelli    2008-03-19 @392  		writel(0x10, &ch->dmac);
ef11291bcd5f96 drivers/net/korina.c          Florian Fainelli    2008-03-19  393  
ef11291bcd5f96 drivers/net/korina.c          Florian Fainelli    2008-03-19  394  		while (!(readl(&ch->dmas) & DMA_STAT_HALT))
860e9538a9482b drivers/net/ethernet/korina.c Florian Westphal    2016-05-03  395  			netif_trans_update(dev);
ef11291bcd5f96 drivers/net/korina.c          Florian Fainelli    2008-03-19  396  
ef11291bcd5f96 drivers/net/korina.c          Florian Fainelli    2008-03-19  397  		writel(0, &ch->dmas);
ef11291bcd5f96 drivers/net/korina.c          Florian Fainelli    2008-03-19  398  	}
ef11291bcd5f96 drivers/net/korina.c          Florian Fainelli    2008-03-19  399  
ef11291bcd5f96 drivers/net/korina.c          Florian Fainelli    2008-03-19  400  	writel(0, &ch->dmadptr);
ef11291bcd5f96 drivers/net/korina.c          Florian Fainelli    2008-03-19  401  	writel(0, &ch->dmandptr);
ef11291bcd5f96 drivers/net/korina.c          Florian Fainelli    2008-03-19  402  }
ef11291bcd5f96 drivers/net/korina.c          Florian Fainelli    2008-03-19  403  

:::::: The code at line 391 was first introduced by commit
:::::: ef11291bcd5f963c72e7ba5952be3e3c97463d2c Add support the Korina (IDT RC32434) Ethernet MAC

:::::: TO: Florian Fainelli <florian.fainelli@telecomint.eu>
:::::: CC: Jeff Garzik <jeff@garzik.org>

-- 
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