Hi Dave,
FYI, the error/warning still remains.
tree:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: b0523c7b1c9d0edcd6c0fe6d2cb558a9ad5c60a8
commit: 26bfe3d0b227ab6d38692640b44ce48f2d857602 [2571/12912] ntb: intel: Add Icelake
(gen4) support for Intel NTB
config: x86_64-randconfig-r002-20200526 (attached as .config)
compiler: clang version 11.0.0 (
https://github.com/llvm/llvm-project
3393cc4cebf9969db94dc424b7a2b6195589c33b)
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
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
git checkout 26bfe3d0b227ab6d38692640b44ce48f2d857602
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>, old ones prefixed by <<):
> drivers/ntb/hw/intel/ntb_hw_gen4.c:449:5: warning: no previous
prototype for function 'intel_ntb4_link_disable' [-Wmissing-prototypes]
int
intel_ntb4_link_disable(struct ntb_dev *ntb)
^
drivers/ntb/hw/intel/ntb_hw_gen4.c:449:1: note: declare 'static' if the function
is not intended to be used outside of this translation unit
int intel_ntb4_link_disable(struct ntb_dev *ntb)
^
static
1 warning generated.
vim +/intel_ntb4_link_disable +449 drivers/ntb/hw/intel/ntb_hw_gen4.c
448
449 int intel_ntb4_link_disable(struct ntb_dev *ntb)
450 {
451 struct intel_ntb_dev *ndev;
452 u32 ntb_cntl;
453 u16 lnkctl;
454
455 ndev = container_of(ntb, struct intel_ntb_dev, ntb);
456
457 dev_dbg(&ntb->pdev->dev, "Disabling link\n");
458
459 /* clear the snoop bits */
460 ntb_cntl = ioread32(ndev->self_mmio + ndev->reg->ntb_ctl);
461 ntb_cntl &= ~(NTB_CTL_E2I_BAR23_SNOOP | NTB_CTL_I2E_BAR23_SNOOP);
462 ntb_cntl &= ~(NTB_CTL_E2I_BAR45_SNOOP | NTB_CTL_I2E_BAR45_SNOOP);
463 iowrite32(ntb_cntl, ndev->self_mmio + ndev->reg->ntb_ctl);
464
465 lnkctl = ioread16(ndev->self_mmio + GEN4_LINK_CTRL_OFFSET);
466 lnkctl |= GEN4_LINK_CTRL_LINK_DISABLE;
467 iowrite16(lnkctl, ndev->self_mmio + GEN4_LINK_CTRL_OFFSET);
468
469 ndev->dev_up = 0;
470
471 return 0;
472 }
473
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org