Hi Wenwei, [auto build test WARNING on v4.4-rc2] [also build test WARNING on next-20151124] url: https://github.com/0day-ci/linux/commits/Wenwei-Tao/lightnvm-missing-nvm_lock-acquire/20151124-232858 config: x86_64-randconfig-x016-11241713 (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): drivers/lightnvm/core.c: In function 'nvm_unregister': >> drivers/lightnvm/core.c:337:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] struct nvm_dev *dev = nvm_find_nvm_dev(disk_name); ^ vim +337 drivers/lightnvm/core.c cd9e9808 Matias Bjørling 2015-10-28 321 } cd9e9808 Matias Bjørling 2015-10-28 322 } else if (dev->ops->max_phys_sect > 256) { cd9e9808 Matias Bjørling 2015-10-28 323 pr_info("nvm: max sectors supported is 256.\n"); cd9e9808 Matias Bjørling 2015-10-28 324 return -EINVAL; cd9e9808 Matias Bjørling 2015-10-28 325 } cd9e9808 Matias Bjørling 2015-10-28 326 cd9e9808 Matias Bjørling 2015-10-28 327 return 0; cd9e9808 Matias Bjørling 2015-10-28 328 err_init: cd9e9808 Matias Bjørling 2015-10-28 329 kfree(dev); cd9e9808 Matias Bjørling 2015-10-28 330 return ret; cd9e9808 Matias Bjørling 2015-10-28 331 } cd9e9808 Matias Bjørling 2015-10-28 332 EXPORT_SYMBOL(nvm_register); cd9e9808 Matias Bjørling 2015-10-28 333 cd9e9808 Matias Bjørling 2015-10-28 334 void nvm_unregister(char *disk_name) cd9e9808 Matias Bjørling 2015-10-28 335 { 0d5267d8 Wenwei Tao 2015-11-24 336 down_write(&nvm_lock); cd9e9808 Matias Bjørling 2015-10-28 @337 struct nvm_dev *dev = nvm_find_nvm_dev(disk_name); cd9e9808 Matias Bjørling 2015-10-28 338 cd9e9808 Matias Bjørling 2015-10-28 339 if (!dev) { cd9e9808 Matias Bjørling 2015-10-28 340 pr_err("nvm: could not find device %s to unregister\n", cd9e9808 Matias Bjørling 2015-10-28 341 disk_name); 0d5267d8 Wenwei Tao 2015-11-24 342 up_write(&nvm_lock); cd9e9808 Matias Bjørling 2015-10-28 343 return; cd9e9808 Matias Bjørling 2015-10-28 344 } cd9e9808 Matias Bjørling 2015-10-28 345 :::::: The code at line 337 was first introduced by commit :::::: cd9e9808d18fe7107c306f6e71c8be7230ee42b4 lightnvm: Support for Open-Channel SSDs :::::: TO: Matias Bjørling <m@xxxxxxxxxxx> :::::: CC: Jens Axboe <axboe@xxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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