Re: [PATCH v11 3/5] iio: adc: Add Xilinx AMS driver

[kernel test robot]

Hi Anand,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on linux/master linus/master v5.16-rc2 next-20211126]
[cannot apply to xilinx-xlnx/master]
[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]

url:    https://github.com/0day-ci/linux/commits/Anand-Ashok-Dumbre/Add-Xilinx-AMS-Driver/20211125-065614
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: powerpc64-randconfig-s032-20211126 (https://download.01.org/0day-ci/archive/20211127/202111271041.Cdu0In2E-lkp@xxxxxxxxx/config)
compiler: powerpc64-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://github.com/0day-ci/linux/commit/9b07fe52c07c2e9f6eccd2f2050f69558904ed64
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Anand-Ashok-Dumbre/Add-Xilinx-AMS-Driver/20211125-065614
        git checkout 9b07fe52c07c2e9f6eccd2f2050f69558904ed64
        # save the config file to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/clk/ drivers/iio/adc/ drivers/pci/controller/

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


sparse warnings: (new ones prefixed by >>)
>> drivers/iio/adc/xilinx-ams.c:1175:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void *data @@
   drivers/iio/adc/xilinx-ams.c:1175:17: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/iio/adc/xilinx-ams.c:1175:17: sparse:     got void *data
>> drivers/iio/adc/xilinx-ams.c:1192:69: sparse: sparse: incorrect type in argument 3 (different address spaces) @@     expected void *data @@     got void [noderef] __iomem *ps_base @@
   drivers/iio/adc/xilinx-ams.c:1192:69: sparse:     expected void *data
   drivers/iio/adc/xilinx-ams.c:1192:69: sparse:     got void [noderef] __iomem *ps_base
>> drivers/iio/adc/xilinx-ams.c:1206:69: sparse: sparse: incorrect type in argument 3 (different address spaces) @@     expected void *data @@     got void [noderef] __iomem *pl_base @@
   drivers/iio/adc/xilinx-ams.c:1206:69: sparse:     expected void *data
   drivers/iio/adc/xilinx-ams.c:1206:69: sparse:     got void [noderef] __iomem *pl_base

vim +1175 drivers/iio/adc/xilinx-ams.c

  1172	
  1173	static void ams_iounmap(void *data)
  1174	{
> 1175		iounmap(data);
  1176	}
  1177	
  1178	static int ams_init_module(struct iio_dev *indio_dev,
  1179				   struct fwnode_handle *fwnode,
  1180				   struct iio_chan_spec *channels)
  1181	{
  1182		struct device *dev = indio_dev->dev.parent;
  1183		struct ams *ams = iio_priv(indio_dev);
  1184		int num_channels = 0;
  1185		int ret;
  1186	
  1187		if (fwnode_property_match_string(fwnode, "compatible",
  1188						 "xlnx,zynqmp-ams-ps") == 0) {
  1189			ams->ps_base = fwnode_iomap(fwnode, 0);
  1190			if (!ams->ps_base)
  1191				return -ENXIO;
> 1192			ret = devm_add_action_or_reset(dev, ams_iounmap, ams->ps_base);
  1193			if (ret < 0)
  1194				return ret;
  1195	
  1196			/* add PS channels to iio device channels */
  1197			memcpy(channels, ams_ps_channels,
  1198			       sizeof(ams_ps_channels));
  1199			num_channels += ARRAY_SIZE(ams_ps_channels);
  1200		} else if (fwnode_property_match_string(fwnode, "compatible",
  1201							"xlnx,zynqmp-ams-pl") == 0) {
  1202			ams->pl_base = fwnode_iomap(fwnode, 0);
  1203			if (!ams->pl_base)
  1204				return -ENXIO;
  1205	
> 1206			ret = devm_add_action_or_reset(dev, ams_iounmap, ams->pl_base);
  1207			if (ret < 0)
  1208				return ret;
  1209	
  1210			/* Copy only first 10 fix channels */
  1211			memcpy(channels, ams_pl_channels,
  1212			       AMS_PL_MAX_FIXED_CHANNEL * sizeof(*channels));
  1213			num_channels += AMS_PL_MAX_FIXED_CHANNEL;
  1214	
  1215			num_channels = ams_get_ext_chan(fwnode, channels,
  1216							num_channels);
  1217		} else if (fwnode_property_match_string(fwnode, "compatible",
  1218							"xlnx,zynqmp-ams") == 0) {
  1219			/* add AMS channels to iio device channels */
  1220			memcpy(channels, ams_ctrl_channels,
  1221			       sizeof(ams_ctrl_channels));
  1222			num_channels += ARRAY_SIZE(ams_ctrl_channels);
  1223		} else {
  1224			return -EINVAL;
  1225		}
  1226	
  1227		return num_channels;
  1228	}
  1229	

---
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