[PATCH v2 20/24] spi: zx: Add ZTE ZX family SPI flash controller driver

[kernel test robot]

Hi Navid,

kernel test robot noticed the following build warnings:

[auto build test WARNING on robh/for-next]
[also build test WARNING on soc/for-next linus/master v7.3-rc7]
[cannot apply to clk/clk-next next-20261012]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Navid-Ghahremani/dt-bindings-arm-Add-ZTE-ZX279128S-platform-descriptions/20261014-082042
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
patch link:    https://lore.kernel.org/r/20261014072109.1759502-21-ghahramani.navid%40gmail.com
patch subject: [PATCH v2 20/24] spi: zx: Add ZTE ZX family SPI flash controller driver
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20261015/202610152215.xgWnk9aT-lkp@intel.com/config)
compiler: clang version 22.1.8 (https://github.com/llvm/llvm-project ca7933e47d3a3451d81e72ac174dcb5aa28b59d1)
rustc: rustc 1.96.0 (ac68faa20 2026-05-25)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261015/202610152215.xgWnk9aT-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202610152215.xgWnk9aT-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/spi/spi-zx.c:473:4: warning: cast to smaller integer type 'unsigned int' from 'struct zx_qspi *' [-Wpointer-to-int-cast]
     473 |                         (unsigned int)qspi);
         |                         ^~~~~~~~~~~~~~~~~~
   include/linux/dev_printk.h:165:39: note: expanded from macro 'dev_dbg'
     165 |         dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
         |                                              ^~~~~~~~~~~
   include/linux/dynamic_debug.h:285:19: note: expanded from macro 'dynamic_dev_dbg'
     285 |                            dev, fmt, ##__VA_ARGS__)
         |                                        ^~~~~~~~~~~
   include/linux/dynamic_debug.h:261:59: note: expanded from macro '_dynamic_func_call'
     261 |         _dynamic_func_call_cls(_DPRINTK_CLASS_DFLT, fmt, func, ##__VA_ARGS__)
         |                                                                  ^~~~~~~~~~~
   include/linux/dynamic_debug.h:259:65: note: expanded from macro '_dynamic_func_call_cls'
     259 |         __dynamic_func_call_cls(__UNIQUE_ID(ddebug), cls, fmt, func, ##__VA_ARGS__)
         |                                                                        ^~~~~~~~~~~
   include/linux/dynamic_debug.h:231:15: note: expanded from macro '__dynamic_func_call_cls'
     231 |                 func(&id, ##__VA_ARGS__);                       \
         |                             ^~~~~~~~~~~
>> drivers/spi/spi-zx.c:706:17: warning: implicit conversion from 'unsigned long' to 'unsigned int' changes value from 18446744073709551614 to 4294967294 [-Wconstant-conversion]
     706 |         writel_relaxed(~ZX_QSPI_EN, qspi->io_base + ZX_QSPI_EN_REG);
         |         ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/x86/include/asm/io.h:88:39: note: expanded from macro 'writel_relaxed'
      88 | #define writel_relaxed(v, a) __writel(v, a)
         |                              ~~~~~~~~ ^
   2 warnings generated.


vim +706 drivers/spi/spi-zx.c

   701	
   702	static void zx_qspi_remove(struct platform_device *pdev)
   703	{
   704		struct zx_qspi *qspi = platform_get_drvdata(pdev);
   705	
 > 706		writel_relaxed(~ZX_QSPI_EN, qspi->io_base + ZX_QSPI_EN_REG);
   707	}
   708	

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