Hi John, [auto build test WARNING on v4.4-rc8] [also build test WARNING on next-20160106] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system]
url: https://github.com/0day-ci/linux/commits/John-Allen/memory-hotplug-Fix-kernel-warning-during-memory-hotplug-on-ppc64/20160107-053749 config: x86_64-randconfig-x017-01041832 (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): drivers/base/memory.c: In function 'memory_probe_store': >> drivers/base/memory.c:454:6: warning: unused variable 'i' [-Wunused-variable] int i, ret; ^ vim +/i +454 drivers/base/memory.c 3947be19 Dave Hansen 2005-10-29 438 10fbcf4c Kay Sievers 2011-12-21 439 static DEVICE_ATTR(block_size_bytes, 0444, print_block_size, NULL); 3947be19 Dave Hansen 2005-10-29 440 3947be19 Dave Hansen 2005-10-29 441 /* 3947be19 Dave Hansen 2005-10-29 442 * Some architectures will have custom drivers to do this, and 3947be19 Dave Hansen 2005-10-29 443 * will not need to do it from userspace. The fake hot-add code 3947be19 Dave Hansen 2005-10-29 444 * as well as ppc64 will do all of their discovery in userspace 3947be19 Dave Hansen 2005-10-29 445 * and will require this interface. 3947be19 Dave Hansen 2005-10-29 446 */ 3947be19 Dave Hansen 2005-10-29 447 #ifdef CONFIG_ARCH_MEMORY_PROBE 3947be19 Dave Hansen 2005-10-29 448 static ssize_t 10fbcf4c Kay Sievers 2011-12-21 449 memory_probe_store(struct device *dev, struct device_attribute *attr, 28812fe1 Andi Kleen 2010-01-05 450 const char *buf, size_t count) 3947be19 Dave Hansen 2005-10-29 451 { 3947be19 Dave Hansen 2005-10-29 452 u64 phys_addr; bc02af93 Yasunori Goto 2006-06-27 453 int nid; 6add7cd6 Nathan Fontenot 2011-01-31 @454 int i, ret; 61b94fea Anton Blanchard 2011-09-15 455 unsigned long pages_per_block = PAGES_PER_SECTION * sections_per_block; 3947be19 Dave Hansen 2005-10-29 456 b69deb2b Zhang Zhen 2014-08-06 457 ret = kstrtoull(buf, 0, &phys_addr); b69deb2b Zhang Zhen 2014-08-06 458 if (ret) b69deb2b Zhang Zhen 2014-08-06 459 return ret; 3947be19 Dave Hansen 2005-10-29 460 61b94fea Anton Blanchard 2011-09-15 461 if (phys_addr & ((pages_per_block << PAGE_SHIFT) - 1)) 61b94fea Anton Blanchard 2011-09-15 462 return -EINVAL; :::::: The code at line 454 was first introduced by commit :::::: 6add7cd618b4d4dc525731beb539c5e06e891855 memory hotplug: sysfs probe routine should add all memory sections :::::: TO: Nathan Fontenot <nf...@austin.ibm.com> :::::: CC: Greg Kroah-Hartman <gre...@suse.de> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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