Re: [iio:testing 20/38] drivers/iio/dac/ad5624r_spi.c:296:1: warning: ISO C90 forbids mixed declarations and code

From: Jonathan Cameron
Date: Mon Jul 19 2021 - 05:09:24 EST

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In reply to: kernel test robot: "[iio:testing 20/38] drivers/iio/dac/ad5624r_spi.c:296:1: warning: ISO C90 forbids mixed declarations and code"
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On Mon, 19 Jul 2021 06:50:43 +0800
kernel test robot <lkp@xxxxxxxxx> wrote:

Gah. Failed to commit the local fix I had for this. Now rectified.

Jonathan

> tree: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git testing
> head: 49be30ad801804ba0ba0051eefd61f2ce74060d7
> commit: 78379c9664cf4c92b7789d04d4dcc8714edb8385 [20/38] iio: dac: ad5624r: Fix incorrect handling of an optional regulator.
> config: i386-randconfig-a014-20210718 (attached as .config)
> compiler: gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0
> reproduce (this is a W=1 build):
> # https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git/commit/?id=78379c9664cf4c92b7789d04d4dcc8714edb8385
> git remote add iio https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git
> git fetch --no-tags iio testing
> git checkout 78379c9664cf4c92b7789d04d4dcc8714edb8385
> # save the attached .config to linux build tree
> make W=1 ARCH=i386
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
>
> All warnings (new ones prefixed by >>):
>
> drivers/iio/dac/ad5624r_spi.c: In function 'ad5624r_probe':
> drivers/iio/dac/ad5624r_spi.c:296:12: error: invalid storage class for function 'ad5624r_remove'
> 296 | static int ad5624r_remove(struct spi_device *spi)
> | ^~~~~~~~~~~~~~
> >> drivers/iio/dac/ad5624r_spi.c:296:1: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
> 296 | static int ad5624r_remove(struct spi_device *spi)
> | ^~~~~~
> drivers/iio/dac/ad5624r_spi.c:324:12: error: initializer element is not constant
> 324 | .remove = ad5624r_remove,
> | ^~~~~~~~~~~~~~
> drivers/iio/dac/ad5624r_spi.c:324:12: note: (near initialization for 'ad5624r_driver.remove')
> drivers/iio/dac/ad5624r_spi.c:319:1: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
> 319 | static struct spi_driver ad5624r_driver = {
> | ^~~~~~
> In file included from include/linux/device.h:32,
> from drivers/iio/dac/ad5624r_spi.c:10:
> drivers/iio/dac/ad5624r_spi.c:327:19: error: invalid storage class for function 'ad5624r_driver_init'
> 327 | module_spi_driver(ad5624r_driver);
> | ^~~~~~~~~~~~~~
> include/linux/device/driver.h:259:19: note: in definition of macro 'module_driver'
> 259 | static int __init __driver##_init(void) \
> | ^~~~~~~~
> drivers/iio/dac/ad5624r_spi.c:327:1: note: in expansion of macro 'module_spi_driver'
> 327 | module_spi_driver(ad5624r_driver);
> | ^~~~~~~~~~~~~~~~~
> In file included from include/linux/export.h:43,
> from include/linux/linkage.h:7,
> from include/linux/kernel.h:8,
> from include/linux/interrupt.h:6,
> from drivers/iio/dac/ad5624r_spi.c:8:
> include/linux/compiler.h:242:46: error: initializer element is not constant
> 242 | __UNIQUE_ID(__PASTE(__addressable_,sym)) = (void *)&sym;
> | ^
> include/linux/init.h:236:2: note: in expansion of macro '__ADDRESSABLE'
> 236 | __ADDRESSABLE(fn)
> | ^~~~~~~~~~~~~
> include/linux/init.h:241:2: note: in expansion of macro '__define_initcall_stub'
> 241 | __define_initcall_stub(__stub, fn) \
> | ^~~~~~~~~~~~~~~~~~~~~~
> include/linux/init.h:254:2: note: in expansion of macro '____define_initcall'
> 254 | ____define_initcall(fn, \
> | ^~~~~~~~~~~~~~~~~~~
> include/linux/init.h:260:2: note: in expansion of macro '__unique_initcall'
> 260 | __unique_initcall(fn, id, __sec, __initcall_id(fn))
> | ^~~~~~~~~~~~~~~~~
> include/linux/init.h:262:35: note: in expansion of macro '___define_initcall'
> 262 | #define __define_initcall(fn, id) ___define_initcall(fn, id, .initcall##id)
> | ^~~~~~~~~~~~~~~~~~
> include/linux/init.h:291:30: note: in expansion of macro '__define_initcall'
> 291 | #define device_initcall(fn) __define_initcall(fn, 6)
> | ^~~~~~~~~~~~~~~~~
> include/linux/init.h:296:24: note: in expansion of macro 'device_initcall'
> 296 | #define __initcall(fn) device_initcall(fn)
> | ^~~~~~~~~~~~~~~
> include/linux/module.h:88:24: note: in expansion of macro '__initcall'
> 88 | #define module_init(x) __initcall(x);
> | ^~~~~~~~~~
> include/linux/device/driver.h:263:1: note: in expansion of macro 'module_init'
> 263 | module_init(__driver##_init); \
> | ^~~~~~~~~~~
> include/linux/spi/spi.h:317:2: note: in expansion of macro 'module_driver'
> 317 | module_driver(__spi_driver, spi_register_driver, \
> | ^~~~~~~~~~~~~
> drivers/iio/dac/ad5624r_spi.c:327:1: note: in expansion of macro 'module_spi_driver'
> 327 | module_spi_driver(ad5624r_driver);
> | ^~~~~~~~~~~~~~~~~
> In file included from include/linux/bits.h:22,
> from include/linux/bitops.h:6,
> from include/linux/kernel.h:12,
> from include/linux/interrupt.h:6,
> from drivers/iio/dac/ad5624r_spi.c:8:
> >> include/linux/build_bug.h:78:41: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
> 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
> | ^~~~~~~~~~~~~~
> include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
> 77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
> | ^~~~~~~~~~~~~~~
> include/linux/init.h:246:2: note: in expansion of macro 'static_assert'
> 246 | static_assert(__same_type(initcall_t, &fn));
> | ^~~~~~~~~~~~~
> include/linux/init.h:254:2: note: in expansion of macro '____define_initcall'
> 254 | ____define_initcall(fn, \
> | ^~~~~~~~~~~~~~~~~~~
> include/linux/init.h:260:2: note: in expansion of macro '__unique_initcall'
> 260 | __unique_initcall(fn, id, __sec, __initcall_id(fn))
> | ^~~~~~~~~~~~~~~~~
> include/linux/init.h:262:35: note: in expansion of macro '___define_initcall'
> 262 | #define __define_initcall(fn, id) ___define_initcall(fn, id, .initcall##id)
> | ^~~~~~~~~~~~~~~~~~
> include/linux/init.h:291:30: note: in expansion of macro '__define_initcall'
> 291 | #define device_initcall(fn) __define_initcall(fn, 6)
> | ^~~~~~~~~~~~~~~~~
> include/linux/init.h:296:24: note: in expansion of macro 'device_initcall'
> 296 | #define __initcall(fn) device_initcall(fn)
> | ^~~~~~~~~~~~~~~
> include/linux/module.h:88:24: note: in expansion of macro '__initcall'
> 88 | #define module_init(x) __initcall(x);
> | ^~~~~~~~~~
> include/linux/device/driver.h:263:1: note: in expansion of macro 'module_init'
> 263 | module_init(__driver##_init); \
> | ^~~~~~~~~~~
> include/linux/spi/spi.h:317:2: note: in expansion of macro 'module_driver'
> 317 | module_driver(__spi_driver, spi_register_driver, \
> | ^~~~~~~~~~~~~
> drivers/iio/dac/ad5624r_spi.c:327:1: note: in expansion of macro 'module_spi_driver'
> 327 | module_spi_driver(ad5624r_driver);
> | ^~~~~~~~~~~~~~~~~
> In file included from include/linux/device.h:32,
> from drivers/iio/dac/ad5624r_spi.c:10:
> drivers/iio/dac/ad5624r_spi.c:327:19: error: invalid storage class for function 'ad5624r_driver_exit'
> 327 | module_spi_driver(ad5624r_driver);
> | ^~~~~~~~~~~~~~
> include/linux/device/driver.h:264:20: note: in definition of macro 'module_driver'
> 264 | static void __exit __driver##_exit(void) \
> | ^~~~~~~~
> drivers/iio/dac/ad5624r_spi.c:327:1: note: in expansion of macro 'module_spi_driver'
> 327 | module_spi_driver(ad5624r_driver);
> | ^~~~~~~~~~~~~~~~~
> >> include/linux/device/driver.h:264:1: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
> 264 | static void __exit __driver##_exit(void) \
> | ^~~~~~
> include/linux/spi/spi.h:317:2: note: in expansion of macro 'module_driver'
> 317 | module_driver(__spi_driver, spi_register_driver, \
> | ^~~~~~~~~~~~~
> drivers/iio/dac/ad5624r_spi.c:327:1: note: in expansion of macro 'module_spi_driver'
> 327 | module_spi_driver(ad5624r_driver);
> | ^~~~~~~~~~~~~~~~~
> In file included from include/linux/printk.h:6,
> from include/linux/kernel.h:19,
> from include/linux/interrupt.h:6,
> from drivers/iio/dac/ad5624r_spi.c:8:
> drivers/iio/dac/ad5624r_spi.c:327:19: error: initializer element is not constant
> 327 | module_spi_driver(ad5624r_driver);
> | ^~~~~~~~~~~~~~
> include/linux/init.h:299:50: note: in definition of macro '__exitcall'
> 299 | static exitcall_t __exitcall_##fn __exit_call = fn
> | ^~
> include/linux/device/driver.h:268:1: note: in expansion of macro 'module_exit'
> 268 | module_exit(__driver##_exit);
> | ^~~~~~~~~~~
> include/linux/spi/spi.h:317:2: note: in expansion of macro 'module_driver'
> 317 | module_driver(__spi_driver, spi_register_driver, \
> | ^~~~~~~~~~~~~
> drivers/iio/dac/ad5624r_spi.c:327:1: note: in expansion of macro 'module_spi_driver'
> 327 | module_spi_driver(ad5624r_driver);
> | ^~~~~~~~~~~~~~~~~
> In file included from include/linux/module.h:22,
> from include/linux/bpf.h:19,
> from include/linux/bpf-cgroup.h:5,
> from include/linux/cgroup-defs.h:22,
> from include/linux/cgroup.h:28,
> from include/linux/memcontrol.h:13,
> from include/linux/swap.h:9,
> from include/linux/suspend.h:5,
> from include/linux/regulator/consumer.h:35,
> from drivers/iio/dac/ad5624r_spi.c:15:
> >> include/linux/moduleparam.h:24:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
> 24 | static const char __UNIQUE_ID(name)[] \
> | ^~~~~~
> include/linux/module.h:166:32: note: in expansion of macro '__MODULE_INFO'
> 166 | #define MODULE_INFO(tag, info) __MODULE_INFO(tag, tag, info)
> | ^~~~~~~~~~~~~
> include/linux/module.h:236:32: note: in expansion of macro 'MODULE_INFO'
> 236 | #define MODULE_AUTHOR(_author) MODULE_INFO(author, _author)
> | ^~~~~~~~~~~
> drivers/iio/dac/ad5624r_spi.c:329:1: note: in expansion of macro 'MODULE_AUTHOR'
> 329 | MODULE_AUTHOR("Barry Song <21cnbao@xxxxxxxxx>");
> | ^~~~~~~~~~~~~
> drivers/iio/dac/ad5624r_spi.c:331:1: error: expected declaration or statement at end of input
> 331 | MODULE_LICENSE("GPL v2");
> | ^~~~~~~~~~~~~~
> At top level:
> drivers/iio/dac/ad5624r_spi.c:222:12: warning: 'ad5624r_probe' defined but not used [-Wunused-function]
> 222 | static int ad5624r_probe(struct spi_device *spi)
> | ^~~~~~~~~~~~~
>
>
> vim +296 drivers/iio/dac/ad5624r_spi.c
>
> 6790e29fef61b2 drivers/staging/iio/dac/ad5624r_spi.c Barry Song 2010-10-27 295
> fc52692c49969e drivers/iio/dac/ad5624r_spi.c Greg Kroah-Hartman 2012-12-21 @296 static int ad5624r_remove(struct spi_device *spi)
> 6790e29fef61b2 drivers/staging/iio/dac/ad5624r_spi.c Barry Song 2010-10-27 297 {
> 3ff242055b7b46 drivers/staging/iio/dac/ad5624r_spi.c Jonathan Cameron 2011-06-27 298 struct iio_dev *indio_dev = spi_get_drvdata(spi);
> 3ff242055b7b46 drivers/staging/iio/dac/ad5624r_spi.c Jonathan Cameron 2011-06-27 299 struct ad5624r_state *st = iio_priv(indio_dev);
> 3ff242055b7b46 drivers/staging/iio/dac/ad5624r_spi.c Jonathan Cameron 2011-06-27 300
> d2fffd6c2fd60f drivers/staging/iio/dac/ad5624r_spi.c Jonathan Cameron 2011-10-14 301 iio_device_unregister(indio_dev);
> 75238230cce22b drivers/iio/dac/ad5624r_spi.c Sachin Kamat 2013-08-19 302 if (!IS_ERR(st->reg))
> 26a54797c1b094 drivers/staging/iio/dac/ad5624r_spi.c Jonathan Cameron 2011-08-30 303 regulator_disable(st->reg);
> 14f88f1b07e03b drivers/staging/iio/dac/ad5624r_spi.c Michael Hennerich 2011-03-09 304
> 6790e29fef61b2 drivers/staging/iio/dac/ad5624r_spi.c Barry Song 2010-10-27 305 return 0;
> 6790e29fef61b2 drivers/staging/iio/dac/ad5624r_spi.c Barry Song 2010-10-27 306 }
> 6790e29fef61b2 drivers/staging/iio/dac/ad5624r_spi.c Barry Song 2010-10-27 307
>
> :::::: The code at line 296 was first introduced by commit
> :::::: fc52692c49969ec72595766929b9f54ac402da34 Drivers: iio: remove __dev* attributes.
>
> :::::: TO: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> :::::: CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
>

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In reply to: kernel test robot: "[iio:testing 20/38] drivers/iio/dac/ad5624r_spi.c:296:1: warning: ISO C90 forbids mixed declarations and code"
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