linux-kernel - drivers/iio/accel/bmc150-accel-spi.c:54:36: warning: 'bmc150_accel_acpi

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Message-ID: <202311171116.47sUbZV5-lkp@intel.com>
Date:   Fri, 17 Nov 2023 11:26:21 +0800
From:   kernel test robot <lkp@...el.com>
To:     Markus Pargmann <mpa@...gutronix.de>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Jonathan Cameron <jic23@...nel.org>
Subject: drivers/iio/accel/bmc150-accel-spi.c:54:36: warning:
 'bmc150_accel_acpi_match' defined but not used

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   7475e51b87969e01a6812eac713a1c8310372e8a
commit: f9ab96e212808123fbd9072d580a59194e5cd410 iio: bmc150: Add SPI driver
date:   8 years ago
config: x86_64-buildonly-randconfig-001-20231012 (https://download.01.org/0day-ci/archive/20231117/202311171116.47sUbZV5-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231117/202311171116.47sUbZV5-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311171116.47sUbZV5-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from include/linux/kobject.h:21,
                    from include/linux/device.h:17,
                    from drivers/iio/accel/bmc150-accel-spi.c:19:
   include/linux/sysfs.h: In function 'sysfs_get_dirent':
   include/linux/sysfs.h:496:44: warning: pointer targets in passing argument 2 of 'kernfs_find_and_get' differ in signedness [-Wpointer-sign]
     496 |         return kernfs_find_and_get(parent, name);
         |                                            ^~~~
         |                                            |
         |                                            const unsigned char *
   In file included from include/linux/sysfs.h:15:
   include/linux/kernfs.h:428:57: note: expected 'const char *' but argument is of type 'const unsigned char *'
     428 | kernfs_find_and_get(struct kernfs_node *kn, const char *name)
         |                                             ~~~~~~~~~~~~^~~~
   drivers/iio/accel/bmc150-accel-spi.c: At top level:
   drivers/iio/accel/bmc150-accel-spi.c:55:9: warning: missing initializer for field 'cls' of 'const struct acpi_device_id' [-Wmissing-field-initializers]
      55 |         {"BSBA0150",    bmc150},
         |         ^
   In file included from drivers/iio/accel/bmc150-accel-spi.c:20:
   include/linux/mod_devicetable.h:192:15: note: 'cls' declared here
     192 |         __u32 cls;
         |               ^~~
   drivers/iio/accel/bmc150-accel-spi.c:56:9: warning: missing initializer for field 'cls' of 'const struct acpi_device_id' [-Wmissing-field-initializers]
      56 |         {"BMC150A",     bmc150},
         |         ^
   include/linux/mod_devicetable.h:192:15: note: 'cls' declared here
     192 |         __u32 cls;
         |               ^~~
   drivers/iio/accel/bmc150-accel-spi.c:57:9: warning: missing initializer for field 'cls' of 'const struct acpi_device_id' [-Wmissing-field-initializers]
      57 |         {"BMI055A",     bmi055},
         |         ^
   include/linux/mod_devicetable.h:192:15: note: 'cls' declared here
     192 |         __u32 cls;
         |               ^~~
   drivers/iio/accel/bmc150-accel-spi.c:58:9: warning: missing initializer for field 'cls' of 'const struct acpi_device_id' [-Wmissing-field-initializers]
      58 |         {"BMA0255",     bma255},
         |         ^
   include/linux/mod_devicetable.h:192:15: note: 'cls' declared here
     192 |         __u32 cls;
         |               ^~~
   drivers/iio/accel/bmc150-accel-spi.c:59:9: warning: missing initializer for field 'cls' of 'const struct acpi_device_id' [-Wmissing-field-initializers]
      59 |         {"BMA250E",     bma250e},
         |         ^
   include/linux/mod_devicetable.h:192:15: note: 'cls' declared here
     192 |         __u32 cls;
         |               ^~~
   drivers/iio/accel/bmc150-accel-spi.c:60:9: warning: missing initializer for field 'cls' of 'const struct acpi_device_id' [-Wmissing-field-initializers]
      60 |         {"BMA222E",     bma222e},
         |         ^
   include/linux/mod_devicetable.h:192:15: note: 'cls' declared here
     192 |         __u32 cls;
         |               ^~~
   drivers/iio/accel/bmc150-accel-spi.c:61:9: warning: missing initializer for field 'cls' of 'const struct acpi_device_id' [-Wmissing-field-initializers]
      61 |         {"BMA0280",     bma280},
         |         ^
   include/linux/mod_devicetable.h:192:15: note: 'cls' declared here
     192 |         __u32 cls;
         |               ^~~
>> drivers/iio/accel/bmc150-accel-spi.c:54:36: warning: 'bmc150_accel_acpi_match' defined but not used [-Wunused-const-variable=]
      54 | static const struct acpi_device_id bmc150_accel_acpi_match[] = {
         |                                    ^~~~~~~~~~~~~~~~~~~~~~~


vim +/bmc150_accel_acpi_match +54 drivers/iio/accel/bmc150-accel-spi.c

    53	
  > 54	static const struct acpi_device_id bmc150_accel_acpi_match[] = {
    55		{"BSBA0150",	bmc150},
    56		{"BMC150A",	bmc150},
    57		{"BMI055A",	bmi055},
    58		{"BMA0255",	bma255},
    59		{"BMA250E",	bma250e},
    60		{"BMA222E",	bma222e},
    61		{"BMA0280",	bma280},
    62		{ },
    63	};
    64	MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match);
    65	

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