tree: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git vhost head: 5e83df49b4993a11b01399f6ce402f775940f965 commit: a50f09346a341984d34ff41f03dbd14dea6f20fe [62/65] virtio_ring: remove unused variable in virtqueue_add() config: mips-randconfig-c004-20220531 (https://download.01.org/0day-ci/archive/20220601/202206010444.EGBXgPMJ-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c825abd6b0198fb088d9752f556a70705bc99dfd) 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 mips cross compiling tool for clang build # apt-get install binutils-mipsel-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git/commit/?id=a50f09346a341984d34ff41f03dbd14dea6f20fe git remote add mst-vhost https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git git fetch --no-tags mst-vhost vhost git checkout a50f09346a341984d34ff41f03dbd14dea6f20fe # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/virtio/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> drivers/virtio/virtio_ring.c:1783:9: error: use of undeclared identifier 'vq' return vq->packed_ring ? virtqueue_add_packed(_vq, sgs, total_sg, ^ 1 error generated. vim +/vq +1783 drivers/virtio/virtio_ring.c 1ce9e6055fa0a9 Tiwei Bie 2018-11-21 1768 1ce9e6055fa0a9 Tiwei Bie 2018-11-21 1769 e6f633e5beab65 Tiwei Bie 2018-11-21 1770 /* e6f633e5beab65 Tiwei Bie 2018-11-21 1771 * Generic functions and exported symbols. e6f633e5beab65 Tiwei Bie 2018-11-21 1772 */ e6f633e5beab65 Tiwei Bie 2018-11-21 1773 e6f633e5beab65 Tiwei Bie 2018-11-21 1774 static inline int virtqueue_add(struct virtqueue *_vq, e6f633e5beab65 Tiwei Bie 2018-11-21 1775 struct scatterlist *sgs[], e6f633e5beab65 Tiwei Bie 2018-11-21 1776 unsigned int total_sg, e6f633e5beab65 Tiwei Bie 2018-11-21 1777 unsigned int out_sgs, e6f633e5beab65 Tiwei Bie 2018-11-21 1778 unsigned int in_sgs, e6f633e5beab65 Tiwei Bie 2018-11-21 1779 void *data, e6f633e5beab65 Tiwei Bie 2018-11-21 1780 void *ctx, e6f633e5beab65 Tiwei Bie 2018-11-21 1781 gfp_t gfp) e6f633e5beab65 Tiwei Bie 2018-11-21 1782 { 1ce9e6055fa0a9 Tiwei Bie 2018-11-21 @1783 return vq->packed_ring ? virtqueue_add_packed(_vq, sgs, total_sg, 1ce9e6055fa0a9 Tiwei Bie 2018-11-21 1784 out_sgs, in_sgs, data, ctx, gfp) : 1ce9e6055fa0a9 Tiwei Bie 2018-11-21 1785 virtqueue_add_split(_vq, sgs, total_sg, e6f633e5beab65 Tiwei Bie 2018-11-21 1786 out_sgs, in_sgs, data, ctx, gfp); e6f633e5beab65 Tiwei Bie 2018-11-21 1787 } e6f633e5beab65 Tiwei Bie 2018-11-21 1788 :::::: The code at line 1783 was first introduced by commit :::::: 1ce9e6055fa0a9043405c5604cf19169ec5379ff virtio_ring: introduce packed ring support :::::: TO: Tiwei Bie <tiwei.bie@xxxxxxxxx> :::::: CC: David S. Miller <davem@xxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://01.org/lkp
