Re: [PATCH v1 2/2] iio: imu: st_lsm6dsx: Remove useless dev_fwnode() calls

kernel test robot
2024-08-27T15:22:50Z

Hi Andy,

kernel test robot noticed the following build warnings:

[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on linus/master v6.11-rc5 next-20240827]
[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/Andy-Shevchenko/iio-imu-st_lsm6dsx-Use-iio_read_acpi_mount_matrix-helper/20240827-052617
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link: https://lore.kernel.org/r/20240826212344.866928-3-andy.shevchenko%40gmail.com
patch subject: [PATCH v1 2/2] iio: imu: st_lsm6dsx: Remove useless dev_fwnode() calls
config: arm64-randconfig-002-20240827 (https://download.01.org/0day-ci/archive/20240827/202408272315.6tUsOdsF-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240827/202408272315.6tUsOdsF-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202408272315.6tUsOdsF-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:2137:55: warning: incompatible integer to pointer conversion passing 'int' to parameter of type 'u32 *' (aka 'unsigned int *') [-Wint-conversion]
if (device_property_read_u32(dev, "st,drdy-int-pin", drdy_pin) < 0) {
^~~~~~~~
include/linux/property.h:229:36: note: passing argument to parameter 'val' here
const char *propname, u32 *val)
^
>> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:2137:55: warning: variable 'drdy_pin' is uninitialized when used here [-Wuninitialized]
if (device_property_read_u32(dev, "st,drdy-int-pin", drdy_pin) < 0) {
^~~~~~~~
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:2135:23: note: initialize the variable 'drdy_pin' to silence this warning
int err = 0, drdy_pin;
^
= 0
2 warnings generated.

vim +2137 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c

2129
2130 static int
2131 st_lsm6dsx_get_drdy_reg(struct st_lsm6dsx_hw *hw,
2132 const struct st_lsm6dsx_reg **drdy_reg)
2133 {
2134 struct device *dev = hw->dev;
2135 int err = 0, drdy_pin;
2136
> 2137 if (device_property_read_u32(dev, "st,drdy-int-pin", drdy_pin) < 0) {
2138 struct st_sensors_platform_data *pdata;
2139
2140 pdata = (struct st_sensors_platform_data *)dev->platform_data;
2141 drdy_pin = pdata ? pdata->drdy_int_pin : 1;
2142 }
2143
2144 switch (drdy_pin) {
2145 case 1:
2146 hw->irq_routing = &hw->settings->irq_config.irq1_func;
2147 *drdy_reg = &hw->settings->irq_config.irq1;
2148 break;
2149 case 2:
2150 hw->irq_routing = &hw->settings->irq_config.irq2_func;
2151 *drdy_reg = &hw->settings->irq_config.irq2;
2152 break;
2153 default:
2154 dev_err(hw->dev, "unsupported data ready pin\n");
2155 err = -EINVAL;
2156 break;
2157 }
2158
2159 return err;
2160 }
2161

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