drivers/dma/sun6i-dma.c:244:45: sparse: sparse: incorrect type in argument 1 (different address spaces)

From: kernel test robot
Date: Fri Nov 19 2021 - 19:50:41 EST

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: a90af8f15bdc9449ee2d24e1d73fa3f7e8633f81
commit: dfad83cb7193effb6c853a5c7337ac2274a2e2fc MIPS: Add support for CONFIG_DEBUG_VIRTUAL
date: 8 months ago
config: mips-randconfig-s032-20211116 (attached as .config)
compiler: mipsel-linux-gcc (GCC) 11.2.0
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-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dfad83cb7193effb6c853a5c7337ac2274a2e2fc
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout dfad83cb7193effb6c853a5c7337ac2274a2e2fc
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=mips

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


sparse warnings: (new ones prefixed by >>)
command-line: note: in included file:
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined
builtin:0:0: sparse: this was the original definition
>> drivers/dma/sun6i-dma.c:244:45: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile *x @@ got void [noderef] __iomem *base @@
drivers/dma/sun6i-dma.c:244:45: sparse: expected void const volatile *x
drivers/dma/sun6i-dma.c:244:45: sparse: got void [noderef] __iomem *base

vim +244 drivers/dma/sun6i-dma.c

555859308723d8 Maxime Ripard 2014-07-17 240
555859308723d8 Maxime Ripard 2014-07-17 241 static inline void sun6i_dma_dump_chan_regs(struct sun6i_dma_dev *sdev,
555859308723d8 Maxime Ripard 2014-07-17 242 struct sun6i_pchan *pchan)
555859308723d8 Maxime Ripard 2014-07-17 243 {
42c0d54e623695 Vinod Koul 2014-07-28 @244 phys_addr_t reg = virt_to_phys(pchan->base);
555859308723d8 Maxime Ripard 2014-07-17 245
555859308723d8 Maxime Ripard 2014-07-17 246 dev_dbg(sdev->slave.dev, "Chan %d reg: %pa\n"
555859308723d8 Maxime Ripard 2014-07-17 247 "\t___en(%04x): \t0x%08x\n"
555859308723d8 Maxime Ripard 2014-07-17 248 "\tpause(%04x): \t0x%08x\n"
555859308723d8 Maxime Ripard 2014-07-17 249 "\tstart(%04x): \t0x%08x\n"
555859308723d8 Maxime Ripard 2014-07-17 250 "\t__cfg(%04x): \t0x%08x\n"
555859308723d8 Maxime Ripard 2014-07-17 251 "\t__src(%04x): \t0x%08x\n"
555859308723d8 Maxime Ripard 2014-07-17 252 "\t__dst(%04x): \t0x%08x\n"
555859308723d8 Maxime Ripard 2014-07-17 253 "\tcount(%04x): \t0x%08x\n"
555859308723d8 Maxime Ripard 2014-07-17 254 "\t_para(%04x): \t0x%08x\n\n",
555859308723d8 Maxime Ripard 2014-07-17 255 pchan->idx, &reg,
555859308723d8 Maxime Ripard 2014-07-17 256 DMA_CHAN_ENABLE,
555859308723d8 Maxime Ripard 2014-07-17 257 readl(pchan->base + DMA_CHAN_ENABLE),
555859308723d8 Maxime Ripard 2014-07-17 258 DMA_CHAN_PAUSE,
555859308723d8 Maxime Ripard 2014-07-17 259 readl(pchan->base + DMA_CHAN_PAUSE),
555859308723d8 Maxime Ripard 2014-07-17 260 DMA_CHAN_LLI_ADDR,
555859308723d8 Maxime Ripard 2014-07-17 261 readl(pchan->base + DMA_CHAN_LLI_ADDR),
555859308723d8 Maxime Ripard 2014-07-17 262 DMA_CHAN_CUR_CFG,
555859308723d8 Maxime Ripard 2014-07-17 263 readl(pchan->base + DMA_CHAN_CUR_CFG),
555859308723d8 Maxime Ripard 2014-07-17 264 DMA_CHAN_CUR_SRC,
555859308723d8 Maxime Ripard 2014-07-17 265 readl(pchan->base + DMA_CHAN_CUR_SRC),
555859308723d8 Maxime Ripard 2014-07-17 266 DMA_CHAN_CUR_DST,
555859308723d8 Maxime Ripard 2014-07-17 267 readl(pchan->base + DMA_CHAN_CUR_DST),
555859308723d8 Maxime Ripard 2014-07-17 268 DMA_CHAN_CUR_CNT,
555859308723d8 Maxime Ripard 2014-07-17 269 readl(pchan->base + DMA_CHAN_CUR_CNT),
555859308723d8 Maxime Ripard 2014-07-17 270 DMA_CHAN_CUR_PARA,
555859308723d8 Maxime Ripard 2014-07-17 271 readl(pchan->base + DMA_CHAN_CUR_PARA));
555859308723d8 Maxime Ripard 2014-07-17 272 }
555859308723d8 Maxime Ripard 2014-07-17 273

:::::: The code at line 244 was first introduced by commit
:::::: 42c0d54e62369584f2491f072f405602ff504e0e dmaengine: sun6i: fix build failure on x86, xilinx targets

:::::: TO: Vinod Koul <vinod.koul@xxxxxxxxx>
:::::: CC: Vinod Koul <vinod.koul@xxxxxxxxx>

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

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