Hi Julia, [auto build test ERROR on: v4.4-rc2] [also build test ERROR on: next-20151127] url: https://github.com/0day-ci/linux/commits/Julia-Lawall/USB-constify-usb_mon_operations-structure/20151128-223726 config: xtensa-allyesconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=xtensa Note: the linux-review/Julia-Lawall/USB-constify-usb_mon_operations-structure/20151128-223726 HEAD 97f842222711238f9fbca0d4cf79fcec2f31ed33 builds fine. It only hurts bisectibility. All error/warnings (new ones prefixed by >>): >> drivers/usb/core/hcd.c:3003:28: error: conflicting types for 'mon_ops' struct usb_mon_operations *mon_ops; ^ In file included from drivers/usb/core/hcd.c:47:0: include/linux/usb/hcd.h:663:41: note: previous declaration of 'mon_ops' was here extern const struct usb_mon_operations *mon_ops; ^ >> drivers/usb/core/hcd.c:3013:5: error: conflicting types for 'usb_mon_register' int usb_mon_register (struct usb_mon_operations *ops) ^ In file included from drivers/usb/core/hcd.c:47:0: include/linux/usb/hcd.h:685:5: note: previous declaration of 'usb_mon_register' was here int usb_mon_register(const struct usb_mon_operations *ops); ^ In file included from include/linux/linkage.h:6:0, from include/linux/kernel.h:6, from include/linux/list.h:8, from include/linux/module.h:9, from drivers/usb/core/hcd.c:26: drivers/usb/core/hcd.c:3023:20: error: conflicting types for 'usb_mon_register' EXPORT_SYMBOL_GPL (usb_mon_register); ^ include/linux/export.h:57:21: note: in definition of macro '__EXPORT_SYMBOL' extern typeof(sym) sym; \ ^ >> drivers/usb/core/hcd.c:3023:1: note: in expansion of macro 'EXPORT_SYMBOL_GPL' EXPORT_SYMBOL_GPL (usb_mon_register); ^ In file included from drivers/usb/core/hcd.c:47:0: include/linux/usb/hcd.h:685:5: note: previous declaration of 'usb_mon_register' was here int usb_mon_register(const struct usb_mon_operations *ops); ^ vim +/mon_ops +3003 drivers/usb/core/hcd.c 782e70c6 Greg Kroah-Hartman 2008-01-25 2997 EXPORT_SYMBOL_GPL(usb_hcd_platform_shutdown); 64a21d02 Aleksey Gorelov 2006-08-08 2998 ^1da177e Linus Torvalds 2005-04-16 2999 /*-------------------------------------------------------------------------*/ ^1da177e Linus Torvalds 2005-04-16 3000 f150fa1a Pete Zaitcev 2008-11-13 3001 #if defined(CONFIG_USB_MON) || defined(CONFIG_USB_MON_MODULE) ^1da177e Linus Torvalds 2005-04-16 3002 ^1da177e Linus Torvalds 2005-04-16 @3003 struct usb_mon_operations *mon_ops; ^1da177e Linus Torvalds 2005-04-16 3004 ^1da177e Linus Torvalds 2005-04-16 3005 /* ^1da177e Linus Torvalds 2005-04-16 3006 * The registration is unlocked. ^1da177e Linus Torvalds 2005-04-16 3007 * We do it this way because we do not want to lock in hot paths. ^1da177e Linus Torvalds 2005-04-16 3008 * ^1da177e Linus Torvalds 2005-04-16 3009 * Notice that the code is minimally error-proof. Because usbmon needs ^1da177e Linus Torvalds 2005-04-16 3010 * symbols from usbcore, usbcore gets referenced and cannot be unloaded first. ^1da177e Linus Torvalds 2005-04-16 3011 */ ^1da177e Linus Torvalds 2005-04-16 3012 ^1da177e Linus Torvalds 2005-04-16 @3013 int usb_mon_register (struct usb_mon_operations *ops) ^1da177e Linus Torvalds 2005-04-16 3014 { ^1da177e Linus Torvalds 2005-04-16 3015 ^1da177e Linus Torvalds 2005-04-16 3016 if (mon_ops) ^1da177e Linus Torvalds 2005-04-16 3017 return -EBUSY; ^1da177e Linus Torvalds 2005-04-16 3018 ^1da177e Linus Torvalds 2005-04-16 3019 mon_ops = ops; ^1da177e Linus Torvalds 2005-04-16 3020 mb(); ^1da177e Linus Torvalds 2005-04-16 3021 return 0; ^1da177e Linus Torvalds 2005-04-16 3022 } ^1da177e Linus Torvalds 2005-04-16 @3023 EXPORT_SYMBOL_GPL (usb_mon_register); ^1da177e Linus Torvalds 2005-04-16 3024 ^1da177e Linus Torvalds 2005-04-16 3025 void usb_mon_deregister (void) ^1da177e Linus Torvalds 2005-04-16 3026 { :::::: The code at line 3003 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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