Hi "Bjørn, Thank you for the patch! Yet something to improve: [auto build test ERROR on usb/usb-testing] [also build test ERROR on v5.13 next-20210701] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Bj-rn-Mork/xhci-add-quirk-for-host-controllers-that-don-t-update-endpoint-DCS/20210702-151445 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing config: powerpc64-randconfig-r013-20210630 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 9eb613b2de3163686b1a4bd1160f15ac56a4b083) 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 powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://github.com/0day-ci/linux/commit/61088f366a5c42caf8ce20c87355b61efc1b175d git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Bj-rn-Mork/xhci-add-quirk-for-host-controllers-that-don-t-update-endpoint-DCS/20210702-151445 git checkout 61088f366a5c42caf8ce20c87355b61efc1b175d # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/usb/host/ fs/kernfs/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from drivers/usb/host/xhci-ring.c:55: In file included from include/linux/scatterlist.h:7: In file included from include/linux/bug.h:5: In file included from arch/powerpc/include/asm/bug.h:109: In file included from include/asm-generic/bug.h:20: In file included from include/linux/kernel.h:12: In file included from include/linux/bitops.h:32: In file included from arch/powerpc/include/asm/bitops.h:62: arch/powerpc/include/asm/barrier.h:49:9: warning: '__lwsync' macro redefined [-Wmacro-redefined] #define __lwsync() __asm__ __volatile__ (stringify_in_c(LWSYNC) : : :"memory") ^ <built-in>:308:9: note: previous definition is here #define __lwsync __builtin_ppc_lwsync ^ >> drivers/usb/host/xhci-ring.c:613:32: error: use of undeclared identifier 'cur_td' halted_seg = trb_in_td(xhci, cur_td->start_seg, ^ drivers/usb/host/xhci-ring.c:614:12: error: use of undeclared identifier 'cur_td' cur_td->first_trb, cur_td->last_trb, ^ drivers/usb/host/xhci-ring.c:614:31: error: use of undeclared identifier 'cur_td' cur_td->first_trb, cur_td->last_trb, ^ >> drivers/usb/host/xhci-ring.c:620:3: error: use of undeclared identifier 'state' state->new_cycle_state = halted_trb->generic.field[3] & 0x1; ^ drivers/usb/host/xhci-ring.c:623:5: error: use of undeclared identifier 'state' state->new_cycle_state); ^ drivers/usb/host/xhci-ring.c:625:3: error: use of undeclared identifier 'state' state->new_cycle_state = hw_dequeue & 0x1; ^ drivers/usb/host/xhci-ring.c:627:2: error: use of undeclared identifier 'state' state->stream_id = stream_id; ^ 1 warning and 7 errors generated. vim +/cur_td +613 drivers/usb/host/xhci-ring.c 552 553 static int xhci_move_dequeue_past_td(struct xhci_hcd *xhci, 554 unsigned int slot_id, unsigned int ep_index, 555 unsigned int stream_id, struct xhci_td *td) 556 { 557 struct xhci_virt_device *dev = xhci->devs[slot_id]; 558 struct xhci_virt_ep *ep = &dev->eps[ep_index]; 559 struct xhci_ring *ep_ring; 560 struct xhci_command *cmd; 561 struct xhci_segment *new_seg; 562 struct xhci_segment *halted_seg = NULL; 563 union xhci_trb *new_deq; 564 int new_cycle; 565 union xhci_trb *halted_trb; 566 int index = 0; 567 dma_addr_t addr; 568 u64 hw_dequeue; 569 bool cycle_found = false; 570 bool td_last_trb_found = false; 571 u32 trb_sct = 0; 572 int ret; 573 574 ep_ring = xhci_triad_to_transfer_ring(xhci, slot_id, 575 ep_index, stream_id); 576 if (!ep_ring) { 577 xhci_warn(xhci, "WARN can't find new dequeue, invalid stream ID %u\n", 578 stream_id); 579 return -ENODEV; 580 } 581 /* 582 * A cancelled TD can complete with a stall if HW cached the trb. 583 * In this case driver can't find td, but if the ring is empty we 584 * can move the dequeue pointer to the current enqueue position. 585 * We shouldn't hit this anymore as cached cancelled TRBs are given back 586 * after clearing the cache, but be on the safe side and keep it anyway 587 */ 588 if (!td) { 589 if (list_empty(&ep_ring->td_list)) { 590 new_seg = ep_ring->enq_seg; 591 new_deq = ep_ring->enqueue; 592 new_cycle = ep_ring->cycle_state; 593 xhci_dbg(xhci, "ep ring empty, Set new dequeue = enqueue"); 594 goto deq_found; 595 } else { 596 xhci_warn(xhci, "Can't find new dequeue state, missing td\n"); 597 return -EINVAL; 598 } 599 } 600 601 hw_dequeue = xhci_get_hw_deq(xhci, dev, ep_index, stream_id); 602 new_seg = ep_ring->deq_seg; 603 new_deq = ep_ring->dequeue; 604 new_cycle = hw_dequeue & 0x1; 605 606 /* 607 * Quirk: xHC write-back of the DCS field in the hardware dequeue 608 * pointer is wrong - use the cycle state of the TRB pointed to by 609 * the dequeue pointer. 610 */ 611 if (xhci->quirks & XHCI_EP_CTX_BROKEN_DCS && 612 !(ep->ep_state & EP_HAS_STREAMS)) > 613 halted_seg = trb_in_td(xhci, cur_td->start_seg, 614 cur_td->first_trb, cur_td->last_trb, 615 hw_dequeue & ~0xf, false); 616 if (halted_seg) { 617 index = ((dma_addr_t)(hw_dequeue & ~0xf) - halted_seg->dma) / 618 sizeof(*halted_trb); 619 halted_trb = &halted_seg->trbs[index]; > 620 state->new_cycle_state = halted_trb->generic.field[3] & 0x1; 621 xhci_dbg(xhci, "Endpoint DCS = %d TRB index = %d cycle = %d\n", 622 (u8)(hw_dequeue & 0x1), index, 623 state->new_cycle_state); 624 } else { 625 state->new_cycle_state = hw_dequeue & 0x1; 626 } 627 state->stream_id = stream_id; 628 629 /* 630 * We want to find the pointer, segment and cycle state of the new trb 631 * (the one after current TD's last_trb). We know the cycle state at 632 * hw_dequeue, so walk the ring until both hw_dequeue and last_trb are 633 * found. 634 */ 635 do { 636 if (!cycle_found && xhci_trb_virt_to_dma(new_seg, new_deq) 637 == (dma_addr_t)(hw_dequeue & ~0xf)) { 638 cycle_found = true; 639 if (td_last_trb_found) 640 break; 641 } 642 if (new_deq == td->last_trb) 643 td_last_trb_found = true; 644 645 if (cycle_found && trb_is_link(new_deq) && 646 link_trb_toggles_cycle(new_deq)) 647 new_cycle ^= 0x1; 648 649 next_trb(xhci, ep_ring, &new_seg, &new_deq); 650 651 /* Search wrapped around, bail out */ 652 if (new_deq == ep->ring->dequeue) { 653 xhci_err(xhci, "Error: Failed finding new dequeue state\n"); 654 return -EINVAL; 655 } 656 657 } while (!cycle_found || !td_last_trb_found); 658 659 deq_found: 660 661 /* Don't update the ring cycle state for the producer (us). */ 662 addr = xhci_trb_virt_to_dma(new_seg, new_deq); 663 if (addr == 0) { 664 xhci_warn(xhci, "Can't find dma of new dequeue ptr\n"); 665 xhci_warn(xhci, "deq seg = %p, deq ptr = %p\n", new_seg, new_deq); 666 return -EINVAL; 667 } 668 669 if ((ep->ep_state & SET_DEQ_PENDING)) { 670 xhci_warn(xhci, "Set TR Deq already pending, don't submit for 0x%pad\n", 671 &addr); 672 return -EBUSY; 673 } 674 675 /* This function gets called from contexts where it cannot sleep */ 676 cmd = xhci_alloc_command(xhci, false, GFP_ATOMIC); 677 if (!cmd) { 678 xhci_warn(xhci, "Can't alloc Set TR Deq cmd 0x%pad\n", &addr); 679 return -ENOMEM; 680 } 681 682 if (stream_id) 683 trb_sct = SCT_FOR_TRB(SCT_PRI_TR); 684 ret = queue_command(xhci, cmd, 685 lower_32_bits(addr) | trb_sct | new_cycle, 686 upper_32_bits(addr), 687 STREAM_ID_FOR_TRB(stream_id), SLOT_ID_FOR_TRB(slot_id) | 688 EP_ID_FOR_TRB(ep_index) | TRB_TYPE(TRB_SET_DEQ), false); 689 if (ret < 0) { 690 xhci_free_command(xhci, cmd); 691 return ret; 692 } 693 ep->queued_deq_seg = new_seg; 694 ep->queued_deq_ptr = new_deq; 695 696 xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, 697 "Set TR Deq ptr 0x%llx, cycle %u\n", addr, new_cycle); 698 699 /* Stop the TD queueing code from ringing the doorbell until 700 * this command completes. The HC won't set the dequeue pointer 701 * if the ring is running, and ringing the doorbell starts the 702 * ring running. 703 */ 704 ep->ep_state |= SET_DEQ_PENDING; 705 xhci_ring_cmd_db(xhci); 706 return 0; 707 } 708 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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