tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 5e4f84f18c4ee9b0ccdc19e39b7de41df21699dd commit: 99ce03b849f89ae2a00addf5b5475d2bb81972f6 [5890/8170] ARC: Emulate one-byte cmpxchg config: arc-randconfig-r122-20240424 (https://download.01.org/0day-ci/archive/20240424/202404242144.8931hnhx-lkp@xxxxxxxxx/config) compiler: arc-elf-gcc (GCC) 13.2.0 reproduce: (https://download.01.org/0day-ci/archive/20240424/202404242144.8931hnhx-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202404242144.8931hnhx-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) drivers/pci/pci-driver.c:520:42: sparse: sparse: restricted pci_power_t degrades to integer drivers/pci/pci-driver.c:520:61: sparse: sparse: restricted pci_power_t degrades to integer drivers/pci/pci-driver.c: note: in included file (through include/linux/pci.h): include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true drivers/pci/pci-driver.c:389:19: sparse: sparse: self-comparison always evaluates to false drivers/pci/pci-driver.c: note: in included file: >> drivers/pci/pci.h:359:23: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected unsigned long [usertype] old @@ got restricted pci_channel_state_t _o_ @@ drivers/pci/pci.h:359:23: sparse: expected unsigned long [usertype] old drivers/pci/pci.h:359:23: sparse: got restricted pci_channel_state_t _o_ >> drivers/pci/pci.h:359:23: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected unsigned long [usertype] new @@ got restricted pci_channel_state_t _n_ @@ drivers/pci/pci.h:359:23: sparse: expected unsigned long [usertype] new drivers/pci/pci.h:359:23: sparse: got restricted pci_channel_state_t _n_ drivers/pci/pci.h:359:23: sparse: sparse: cast to restricted pci_channel_state_t drivers/pci/pci.h:363:23: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected unsigned long [usertype] old @@ got restricted pci_channel_state_t _o_ @@ drivers/pci/pci.h:363:23: sparse: expected unsigned long [usertype] old drivers/pci/pci.h:363:23: sparse: got restricted pci_channel_state_t _o_ drivers/pci/pci.h:363:23: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected unsigned long [usertype] new @@ got restricted pci_channel_state_t _n_ @@ drivers/pci/pci.h:363:23: sparse: expected unsigned long [usertype] new drivers/pci/pci.h:363:23: sparse: got restricted pci_channel_state_t _n_ drivers/pci/pci.h:363:23: sparse: sparse: cast to restricted pci_channel_state_t vim +359 drivers/pci/pci.h ac04840350e2c2 Lukas Wunner 2023-03-11 337 a6bd101b8f84f9 Keith Busch 2018-09-20 338 /** a6bd101b8f84f9 Keith Busch 2018-09-20 339 * pci_dev_set_io_state - Set the new error state if possible. a6bd101b8f84f9 Keith Busch 2018-09-20 340 * 347269c113f10f Krzysztof Wilczyński 2021-07-03 341 * @dev: PCI device to set new error_state 347269c113f10f Krzysztof Wilczyński 2021-07-03 342 * @new: the state we want dev to be in a6bd101b8f84f9 Keith Busch 2018-09-20 343 * 74ff8864cc842b Lukas Wunner 2023-01-20 344 * If the device is experiencing perm_failure, it has to remain in that state. 74ff8864cc842b Lukas Wunner 2023-01-20 345 * Any other transition is allowed. a6bd101b8f84f9 Keith Busch 2018-09-20 346 * a6bd101b8f84f9 Keith Busch 2018-09-20 347 * Returns true if state has been changed to the requested state. a6bd101b8f84f9 Keith Busch 2018-09-20 348 */ a6bd101b8f84f9 Keith Busch 2018-09-20 349 static inline bool pci_dev_set_io_state(struct pci_dev *dev, a6bd101b8f84f9 Keith Busch 2018-09-20 350 pci_channel_state_t new) a6bd101b8f84f9 Keith Busch 2018-09-20 351 { 74ff8864cc842b Lukas Wunner 2023-01-20 352 pci_channel_state_t old; a6bd101b8f84f9 Keith Busch 2018-09-20 353 a6bd101b8f84f9 Keith Busch 2018-09-20 354 switch (new) { a6bd101b8f84f9 Keith Busch 2018-09-20 355 case pci_channel_io_perm_failure: 74ff8864cc842b Lukas Wunner 2023-01-20 356 xchg(&dev->error_state, pci_channel_io_perm_failure); 74ff8864cc842b Lukas Wunner 2023-01-20 357 return true; a6bd101b8f84f9 Keith Busch 2018-09-20 358 case pci_channel_io_frozen: 74ff8864cc842b Lukas Wunner 2023-01-20 @359 old = cmpxchg(&dev->error_state, pci_channel_io_normal, 74ff8864cc842b Lukas Wunner 2023-01-20 360 pci_channel_io_frozen); 74ff8864cc842b Lukas Wunner 2023-01-20 361 return old != pci_channel_io_perm_failure; a6bd101b8f84f9 Keith Busch 2018-09-20 362 case pci_channel_io_normal: 74ff8864cc842b Lukas Wunner 2023-01-20 363 old = cmpxchg(&dev->error_state, pci_channel_io_frozen, 74ff8864cc842b Lukas Wunner 2023-01-20 364 pci_channel_io_normal); 74ff8864cc842b Lukas Wunner 2023-01-20 365 return old != pci_channel_io_perm_failure; 74ff8864cc842b Lukas Wunner 2023-01-20 366 default: 74ff8864cc842b Lukas Wunner 2023-01-20 367 return false; a6bd101b8f84f9 Keith Busch 2018-09-20 368 } a6bd101b8f84f9 Keith Busch 2018-09-20 369 } 89ee9f7680031d Keith Busch 2017-03-29 370 :::::: The code at line 359 was first introduced by commit :::::: 74ff8864cc842be994853095dba6db48e716400a PCI: hotplug: Allow marking devices as disconnected during bind/unbind :::::: TO: Lukas Wunner <lukas@xxxxxxxxx> :::::: CC: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
