Re: [PATCH v1 3/3] fpga: region: Use standard dev_release for class driver

From: kernel test robot
Date: Sat May 22 2021 - 19:32:34 EST

Hi Russ,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linux/master]
[also build test WARNING on linus/master v5.13-rc2 next-20210521]
[cannot apply to 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/Russ-Weight/fpga-Use-standard-class-dev_release-function/20210522-205631
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git dd860052c99b1e088352bdd4fb7aef46f8d2ef47
config: arm64-randconfig-p001-20210522 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/0day-ci/linux/commit/2bd6e6762866ff1b80bea0d0d8377bcf9d2253ce
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Russ-Weight/fpga-Use-standard-class-dev_release-function/20210522-205631
git checkout 2bd6e6762866ff1b80bea0d0d8377bcf9d2253ce
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64

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/fpga/fpga-region.c:193: warning: expecting prototype for fpga_region_create(). Prototype was for fpga_region_register() instead


vim +193 drivers/fpga/fpga-region.c

41a8b2c56470b7 Wu Hao 2018-06-30 181
9f368977b4589e Alan Tull 2018-05-16 182 /**
9f368977b4589e Alan Tull 2018-05-16 183 * fpga_region_create - alloc and init a struct fpga_region
9f368977b4589e Alan Tull 2018-05-16 184 * @dev: device parent
9f368977b4589e Alan Tull 2018-05-16 185 * @mgr: manager that programs this region
9f368977b4589e Alan Tull 2018-05-16 186 * @get_bridges: optional function to get bridges to a list
9f368977b4589e Alan Tull 2018-05-16 187 *
2bd6e6762866ff Russ Weight 2021-05-20 188 * Returns a struct fpga_region pointer on success, or ERR_PTR() on error.
9f368977b4589e Alan Tull 2018-05-16 189 */
2bd6e6762866ff Russ Weight 2021-05-20 190 struct fpga_region *
2bd6e6762866ff Russ Weight 2021-05-20 191 fpga_region_register(struct device *dev, struct fpga_manager *mgr,
9f368977b4589e Alan Tull 2018-05-16 192 int (*get_bridges)(struct fpga_region *))
0fa20cdfcc1f68 Alan Tull 2016-11-01 @193 {
9f368977b4589e Alan Tull 2018-05-16 194 struct fpga_region *region;
0fa20cdfcc1f68 Alan Tull 2016-11-01 195 int id, ret = 0;
0fa20cdfcc1f68 Alan Tull 2016-11-01 196
9f368977b4589e Alan Tull 2018-05-16 197 region = kzalloc(sizeof(*region), GFP_KERNEL);
9f368977b4589e Alan Tull 2018-05-16 198 if (!region)
2bd6e6762866ff Russ Weight 2021-05-20 199 return ERR_PTR(-ENOMEM);
9f368977b4589e Alan Tull 2018-05-16 200
0fa20cdfcc1f68 Alan Tull 2016-11-01 201 id = ida_simple_get(&fpga_region_ida, 0, 0, GFP_KERNEL);
52a3a7ccce07e7 Alan Tull 2017-11-15 202 if (id < 0)
9f368977b4589e Alan Tull 2018-05-16 203 goto err_free;
0fa20cdfcc1f68 Alan Tull 2016-11-01 204
9f368977b4589e Alan Tull 2018-05-16 205 region->mgr = mgr;
9f368977b4589e Alan Tull 2018-05-16 206 region->get_bridges = get_bridges;
0fa20cdfcc1f68 Alan Tull 2016-11-01 207 mutex_init(&region->mutex);
0fa20cdfcc1f68 Alan Tull 2016-11-01 208 INIT_LIST_HEAD(&region->bridge_list);
9f368977b4589e Alan Tull 2018-05-16 209
0fa20cdfcc1f68 Alan Tull 2016-11-01 210 region->dev.class = fpga_region_class;
0fa20cdfcc1f68 Alan Tull 2016-11-01 211 region->dev.parent = dev;
52a3a7ccce07e7 Alan Tull 2017-11-15 212 region->dev.of_node = dev->of_node;
0fa20cdfcc1f68 Alan Tull 2016-11-01 213 region->dev.id = id;
0fa20cdfcc1f68 Alan Tull 2016-11-01 214
0fa20cdfcc1f68 Alan Tull 2016-11-01 215 ret = dev_set_name(&region->dev, "region%d", id);
0fa20cdfcc1f68 Alan Tull 2016-11-01 216 if (ret)
0fa20cdfcc1f68 Alan Tull 2016-11-01 217 goto err_remove;
0fa20cdfcc1f68 Alan Tull 2016-11-01 218
2bd6e6762866ff Russ Weight 2021-05-20 219 ret = device_register(&region->dev);
2bd6e6762866ff Russ Weight 2021-05-20 220 if (ret) {
2bd6e6762866ff Russ Weight 2021-05-20 221 put_device(&region->dev);
2bd6e6762866ff Russ Weight 2021-05-20 222 return ERR_PTR(ret);
2bd6e6762866ff Russ Weight 2021-05-20 223 }
2bd6e6762866ff Russ Weight 2021-05-20 224
9f368977b4589e Alan Tull 2018-05-16 225 return region;
52a3a7ccce07e7 Alan Tull 2017-11-15 226
52a3a7ccce07e7 Alan Tull 2017-11-15 227 err_remove:
52a3a7ccce07e7 Alan Tull 2017-11-15 228 ida_simple_remove(&fpga_region_ida, id);
9f368977b4589e Alan Tull 2018-05-16 229 err_free:
9f368977b4589e Alan Tull 2018-05-16 230 kfree(region);
9f368977b4589e Alan Tull 2018-05-16 231
2bd6e6762866ff Russ Weight 2021-05-20 232 return ERR_PTR(ret);
52a3a7ccce07e7 Alan Tull 2017-11-15 233 }
52a3a7ccce07e7 Alan Tull 2017-11-15 234 EXPORT_SYMBOL_GPL(fpga_region_register);
52a3a7ccce07e7 Alan Tull 2017-11-15 235

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

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