Hi Youri, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: b791d1bdf9212d944d749a5c7ff6febdba241771 commit: 3b2abda7d28c69f564c1157b9b9c21ef40092ee9 soc: fsl: dpio: Replace QMAN array mode with ring mode enqueue date: 4 months ago config: i386-randconfig-r011-20200612 (attached as .config) compiler: gcc-4.9 (Ubuntu 4.9.3-13ubuntu2) 4.9.3 reproduce (this is a W=1 build): git checkout 3b2abda7d28c69f564c1157b9b9c21ef40092ee9 # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): drivers/soc/fsl/dpio/qbman-portal.c: In function 'qbman_swp_enqueue_multiple_direct': uint64_t addr_cena; ^ drivers/soc/fsl/dpio/qbman-portal.c: In function 'qbman_swp_enqueue_multiple_desc_direct': drivers/soc/fsl/dpio/qbman-portal.c:869:14: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] addr_cena = (uint64_t)s->addr_cena; ^ drivers/soc/fsl/dpio/qbman-portal.c:825:11: warning: variable 'addr_cena' set but not used [-Wunused-but-set-variable] uint64_t addr_cena; ^ vim +/addr_cena +661 drivers/soc/fsl/dpio/qbman-portal.c 638 639 /** 640 * qbman_swp_enqueue_multiple_direct() - Issue a multi enqueue command 641 * using one enqueue descriptor 642 * @s: the software portal used for enqueue 643 * @d: the enqueue descriptor 644 * @fd: table pointer of frame descriptor table to be enqueued 645 * @flags: table pointer of QBMAN_ENQUEUE_FLAG_DCA flags, not used if NULL 646 * @num_frames: number of fd to be enqueued 647 * 648 * Return the number of fd enqueued, or a negative error number. 649 */ 650 static 651 int qbman_swp_enqueue_multiple_direct(struct qbman_swp *s, 652 const struct qbman_eq_desc *d, 653 const struct dpaa2_fd *fd, 654 uint32_t *flags, 655 int num_frames) 656 { 657 uint32_t *p = NULL; 658 const uint32_t *cl = (uint32_t *)d; 659 uint32_t eqcr_ci, eqcr_pi, half_mask, full_mask; 660 int i, num_enqueued = 0; 662 663 spin_lock(&s->access_spinlock); 664 half_mask = (s->eqcr.pi_ci_mask>>1); 665 full_mask = s->eqcr.pi_ci_mask; 666 667 if (!s->eqcr.available) { 668 eqcr_ci = s->eqcr.ci; 669 p = s->addr_cena + QBMAN_CENA_SWP_EQCR_CI; 670 s->eqcr.ci = qbman_read_register(s, QBMAN_CINH_SWP_EQCR_CI); 671 672 s->eqcr.available = qm_cyc_diff(s->eqcr.pi_ring_size, 673 eqcr_ci, s->eqcr.ci); 674 if (!s->eqcr.available) { 675 spin_unlock(&s->access_spinlock); 676 return 0; 677 } 678 } 679 680 eqcr_pi = s->eqcr.pi; 681 num_enqueued = (s->eqcr.available < num_frames) ? 682 s->eqcr.available : num_frames; 683 s->eqcr.available -= num_enqueued; 684 /* Fill in the EQCR ring */ 685 for (i = 0; i < num_enqueued; i++) { 686 p = (s->addr_cena + QBMAN_CENA_SWP_EQCR(eqcr_pi & half_mask)); 687 /* Skip copying the verb */ 688 memcpy(&p[1], &cl[1], EQ_DESC_SIZE_WITHOUT_FD - 1); 689 memcpy(&p[EQ_DESC_SIZE_FD_START/sizeof(uint32_t)], 690 &fd[i], sizeof(*fd)); 691 eqcr_pi++; 692 } 693 694 dma_wmb(); 695 696 /* Set the verb byte, have to substitute in the valid-bit */ 697 eqcr_pi = s->eqcr.pi; 698 for (i = 0; i < num_enqueued; i++) { 699 p = (s->addr_cena + QBMAN_CENA_SWP_EQCR(eqcr_pi & half_mask)); 700 p[0] = cl[0] | s->eqcr.pi_vb; 701 if (flags && (flags[i] & QBMAN_ENQUEUE_FLAG_DCA)) { 702 struct qbman_eq_desc *d = (struct qbman_eq_desc *)p; 703 704 d->dca = (1 << QB_ENQUEUE_CMD_DCA_EN_SHIFT) | 705 ((flags[i]) & QBMAN_EQCR_DCA_IDXMASK); 706 } 707 eqcr_pi++; 708 if (!(eqcr_pi & half_mask)) 709 s->eqcr.pi_vb ^= QB_VALID_BIT; 710 } 711 712 /* Flush all the cacheline without load/store in between */ 713 eqcr_pi = s->eqcr.pi; 714 addr_cena = (size_t)s->addr_cena; 715 for (i = 0; i < num_enqueued; i++) 716 eqcr_pi++; 717 s->eqcr.pi = eqcr_pi & full_mask; 718 spin_unlock(&s->access_spinlock); 719 720 return num_enqueued; 721 } 722 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org