Hi Jamin, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on wsa/i2c/for-next] [also build test WARNING on robh/for-next joel-aspeed/for-next v5.13-rc6 next-20210617] [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/Jamin-Lin/Support-ASPEED-AST2600... base: https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/for-next config: arm-allyesconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 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 # https://github.com/0day-ci/linux/commit/8d16cf8cbc5d3dccd05c23dd7c4744a08... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jamin-Lin/Support-ASPEED-AST2600-I2C/20210617-174709 git checkout 8d16cf8cbc5d3dccd05c23dd7c4744a0890e356f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 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 >>): 542 | void aspeed_i2c_slave_packet_irq(struct aspeed_new_i2c_bus *i2c_bus, u32 sts) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ 827 | void aspeed_i2c_slave_byte_irq(struct aspeed_new_i2c_bus *i2c_bus, u32 sts) | ^~~~~~~~~~~~~~~~~~~~~~~~~ 883 | int aspeed_new_i2c_slave_irq(struct aspeed_new_i2c_bus *i2c_bus) | ^~~~~~~~~~~~~~~~~~~~~~~~ 1091 | void aspeed_i2c_master_package_irq(struct aspeed_new_i2c_bus *i2c_bus, u32 sts) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1347 | int aspeed_new_i2c_master_irq(struct aspeed_new_i2c_bus *i2c_bus) | ^~~~~~~~~~~~~~~~~~~~~~~~~ vim +/aspeed_i2c_slave_packet_irq +542 drivers/i2c/busses/i2c-new-aspeed.c 540 541 #ifdef CONFIG_I2C_SLAVE 543 { 544 u32 cmd = 0; 545 u8 value; 546 u8 byte_data; 547 int i = 0; 548 int slave_rx_len; 549 550 sts &= ~(AST_I2CS_PKT_DONE | AST_I2CS_PKT_ERROR); 551 writel(AST_I2CS_PKT_DONE, i2c_bus->reg_base + AST_I2CS_ISR); 552 switch (sts) { 553 case 0: 554 cmd = SLAVE_TRIGGER_CMD; 555 if (i2c_bus->mode == DMA_MODE) 556 cmd |= AST_I2CS_RX_DMA_EN; 557 else if (i2c_bus->mode == BUFF_MODE) 558 cmd |= AST_I2CS_RX_BUFF_EN; 559 else 560 cmd &= ~AST_I2CS_PKT_MODE_EN; 561 writel(cmd, i2c_bus->reg_base + AST_I2CS_CMD_STS); 562 break; 563 case AST_I2CS_SLAVE_MATCH: 564 dev_dbg(i2c_bus->dev, "S : Sw\n"); 565 i2c_slave_event(i2c_bus->slave, 566 I2C_SLAVE_WRITE_REQUESTED, &value); 567 break; 568 569 case AST_I2CS_SLAVE_MATCH | AST_I2CS_STOP: 570 dev_dbg(i2c_bus->dev, "S : Sw|P\n"); 571 i2c_slave_event(i2c_bus->slave, I2C_SLAVE_STOP, &value); 572 cmd = SLAVE_TRIGGER_CMD; 573 if (i2c_bus->mode == DMA_MODE) { 574 cmd |= AST_I2CS_RX_DMA_EN; 575 writel(AST_I2CS_SET_RX_DMA_LEN(I2C_SLAVE_MSG_BUF_SIZE), 576 i2c_bus->reg_base + AST_I2CS_DMA_LEN); 577 } else if (i2c_bus->mode == BUFF_MODE) { 578 cmd |= AST_I2CS_RX_BUFF_EN; 579 writel(AST_I2CC_SET_RX_BUF_LEN(i2c_bus->buf_size), 580 i2c_bus->reg_base + AST_I2CC_BUFF_CTRL); 581 } else { 582 cmd &= ~AST_I2CS_PKT_MODE_EN; 583 } 584 writel(cmd, i2c_bus->reg_base + AST_I2CS_CMD_STS); 585 break; 586 587 case AST_I2CS_SLAVE_MATCH | AST_I2CS_RX_DONE | 588 AST_I2CS_Wait_RX_DMA | AST_I2CS_STOP: 589 case AST_I2CS_RX_DONE | AST_I2CS_Wait_RX_DMA | AST_I2CS_STOP: 590 case AST_I2CS_RX_DONE | AST_I2CS_STOP: 591 case AST_I2CS_SLAVE_MATCH | AST_I2CS_RX_DONE | AST_I2CS_Wait_RX_DMA: 592 case AST_I2CS_SLAVE_MATCH | AST_I2CS_RX_DONE | AST_I2CS_STOP: 593 cmd = SLAVE_TRIGGER_CMD; 594 if (sts & AST_I2CS_STOP) { 595 if (sts & AST_I2CS_SLAVE_MATCH) 596 dev_dbg(i2c_bus->dev, "S : Sw|D|P\n"); 597 else 598 dev_dbg(i2c_bus->dev, "S : D|P\n"); 599 } else { 600 dev_dbg(i2c_bus->dev, "S : Sw|D\n"); 601 } 602 603 if (sts & AST_I2CS_SLAVE_MATCH) 604 i2c_slave_event(i2c_bus->slave, 605 I2C_SLAVE_WRITE_REQUESTED, 606 &value); 607 608 if (i2c_bus->mode == DMA_MODE) { 609 cmd |= AST_I2CS_RX_DMA_EN; 610 slave_rx_len = 611 AST_I2C_GET_RX_DMA_LEN(readl(i2c_bus->reg_base + 612 AST_I2CS_DMA_LEN_STS)); 613 dev_dbg(i2c_bus->dev, "rx len %d\n", slave_rx_len); 614 for (i = 0; i < slave_rx_len; i++) { 615 i2c_slave_event(i2c_bus->slave, 616 I2C_SLAVE_WRITE_RECEIVED, 617 &i2c_bus->slave_dma_buf[i]); 618 } 619 writel(AST_I2CS_SET_RX_DMA_LEN(I2C_SLAVE_MSG_BUF_SIZE), 620 i2c_bus->reg_base + AST_I2CS_DMA_LEN); 621 } else if (i2c_bus->mode == BUFF_MODE) { 622 cmd |= AST_I2CS_RX_BUFF_EN; 623 slave_rx_len = 624 AST_I2CC_GET_RX_BUF_LEN(readl(i2c_bus->reg_base + 625 AST_I2CC_BUFF_CTRL)); 626 for (i = 0; i < slave_rx_len; i++) { 627 value = readb(i2c_bus->buf_base + i); 628 dev_dbg(i2c_bus->dev, "[%02x]", value); 629 i2c_slave_event(i2c_bus->slave, 630 I2C_SLAVE_WRITE_RECEIVED, 631 &value); 632 } 633 writel(AST_I2CC_SET_RX_BUF_LEN(i2c_bus->buf_size), 634 i2c_bus->reg_base + AST_I2CC_BUFF_CTRL); 635 } else { 636 cmd &= ~AST_I2CS_PKT_MODE_EN; 637 byte_data = AST_I2CC_GET_RX_BUFF(readl(i2c_bus->reg_base + 638 AST_I2CC_STS_AND_BUFF)); 639 dev_dbg(i2c_bus->dev, "[%02x]", byte_data); 640 i2c_slave_event(i2c_bus->slave, 641 I2C_SLAVE_WRITE_RECEIVED, 642 &byte_data); 643 } 644 if (sts & AST_I2CS_STOP) 645 i2c_slave_event(i2c_bus->slave, I2C_SLAVE_STOP, 646 &value); 647 writel(cmd, i2c_bus->reg_base + AST_I2CS_CMD_STS); 648 break; 649 650 /* it is Mw data Mr coming -> it need send tx */ 651 case AST_I2CS_RX_DONE | AST_I2CS_Wait_TX_DMA: 652 case AST_I2CS_SLAVE_MATCH | AST_I2CS_RX_DONE | AST_I2CS_Wait_TX_DMA: 653 /* it should be repeat start read */ 654 if (sts & AST_I2CS_SLAVE_MATCH) 655 dev_dbg(i2c_bus->dev, 656 "S: AST_I2CS_Wait_TX_DMA | AST_I2CS_SLAVE_MATCH | AST_I2CS_RX_DONE\n"); 657 else 658 dev_dbg(i2c_bus->dev, 659 "S: AST_I2CS_Wait_TX_DMA | AST_I2CS_RX_DONE\n"); 660 661 if (sts & AST_I2CS_SLAVE_MATCH) 662 i2c_slave_event(i2c_bus->slave, 663 I2C_SLAVE_WRITE_REQUESTED, 664 &value); 665 666 cmd = SLAVE_TRIGGER_CMD; 667 if (i2c_bus->mode == DMA_MODE) { 668 cmd |= AST_I2CS_TX_DMA_EN; 669 slave_rx_len = 670 AST_I2C_GET_RX_DMA_LEN(readl(i2c_bus->reg_base + 671 AST_I2CS_DMA_LEN_STS)); 672 for (i = 0; i < slave_rx_len; i++) { 673 dev_dbg(i2c_bus->dev, "rx [%02x]", 674 i2c_bus->slave_dma_buf[i]); 675 i2c_slave_event(i2c_bus->slave, 676 I2C_SLAVE_WRITE_RECEIVED, 677 &i2c_bus->slave_dma_buf[i]); 678 } 679 i2c_slave_event(i2c_bus->slave, 680 I2C_SLAVE_READ_REQUESTED, 681 &i2c_bus->slave_dma_buf[0]); 682 dev_dbg(i2c_bus->dev, "tx : [%02x]", 683 i2c_bus->slave_dma_buf[0]); 684 writel(0, i2c_bus->reg_base + AST_I2CS_DMA_LEN_STS); 685 writel(AST_I2CS_SET_TX_DMA_LEN(1), 686 i2c_bus->reg_base + AST_I2CS_DMA_LEN); 687 } else if (i2c_bus->mode == BUFF_MODE) { 688 cmd |= AST_I2CS_TX_BUFF_EN; 689 slave_rx_len = 690 AST_I2CC_GET_RX_BUF_LEN(readl(i2c_bus->reg_base + 691 AST_I2CC_BUFF_CTRL)); 692 for (i = 0; i < slave_rx_len; i++) { 693 value = readb(i2c_bus->buf_base + i); 694 dev_dbg(i2c_bus->dev, "rx : [%02x]", 695 value); 696 i2c_slave_event(i2c_bus->slave, 697 I2C_SLAVE_WRITE_RECEIVED, 698 &value); 699 } 700 i2c_slave_event(i2c_bus->slave, 701 I2C_SLAVE_READ_REQUESTED, 702 &value); 703 dev_dbg(i2c_bus->dev, "tx : [%02x]", value); 704 writeb(value, i2c_bus->buf_base); 705 writel(AST_I2CC_SET_TX_BUF_LEN(1), 706 i2c_bus->reg_base + AST_I2CC_BUFF_CTRL); 707 } else { 708 cmd &= ~AST_I2CS_PKT_MODE_EN; 709 cmd |= AST_I2CS_TX_CMD; 710 byte_data = AST_I2CC_GET_RX_BUFF(readl(i2c_bus->reg_base + 711 AST_I2CC_STS_AND_BUFF)); 712 dev_dbg(i2c_bus->dev, "rx : [%02x]", byte_data); 713 i2c_slave_event(i2c_bus->slave, 714 I2C_SLAVE_WRITE_RECEIVED, 715 &byte_data); 716 i2c_slave_event(i2c_bus->slave, 717 I2C_SLAVE_READ_REQUESTED, 718 &byte_data); 719 dev_dbg(i2c_bus->dev, "tx : [%02x]", byte_data); 720 writel(byte_data, i2c_bus->reg_base + 721 AST_I2CC_STS_AND_BUFF); 722 } 723 writel(cmd, i2c_bus->reg_base + AST_I2CS_CMD_STS); 724 break; 725 726 case AST_I2CS_SLAVE_MATCH | AST_I2CS_Wait_TX_DMA: 727 /* First Start read */ 728 dev_dbg(i2c_bus->dev, 729 "S: AST_I2CS_SLAVE_MATCH | AST_I2CS_Wait_TX_DMA\n"); 730 cmd = SLAVE_TRIGGER_CMD; 731 if (i2c_bus->mode == DMA_MODE) { 732 cmd |= AST_I2CS_TX_DMA_EN; 733 i2c_slave_event(i2c_bus->slave, 734 I2C_SLAVE_READ_REQUESTED, 735 &i2c_bus->slave_dma_buf[0]); 736 dev_dbg(i2c_bus->dev, "tx: [%x]\n", 737 i2c_bus->slave_dma_buf[0]); 738 writel(AST_I2CS_SET_TX_DMA_LEN(1), 739 i2c_bus->reg_base + AST_I2CS_DMA_LEN); 740 } else if (i2c_bus->mode == BUFF_MODE) { 741 cmd |= AST_I2CS_TX_BUFF_EN; 742 i2c_slave_event(i2c_bus->slave, 743 I2C_SLAVE_READ_REQUESTED, 744 &byte_data); 745 dev_dbg(i2c_bus->dev, "tx : [%02x]", byte_data); 746 writeb(byte_data, i2c_bus->buf_base); 747 writel(AST_I2CC_SET_TX_BUF_LEN(1), 748 i2c_bus->reg_base + AST_I2CC_BUFF_CTRL); 749 } else { 750 cmd &= ~AST_I2CS_PKT_MODE_EN; 751 cmd |= AST_I2CS_TX_CMD; 752 i2c_slave_event(i2c_bus->slave, 753 I2C_SLAVE_READ_REQUESTED, 754 &byte_data); 755 writel(byte_data, i2c_bus->reg_base + 756 AST_I2CC_STS_AND_BUFF); 757 } 758 writel(cmd, i2c_bus->reg_base + AST_I2CS_CMD_STS); 759 break; 760 761 case AST_I2CS_Wait_TX_DMA: 762 /* it should be next start read */ 763 dev_dbg(i2c_bus->dev, "S: AST_I2CS_Wait_TX_DMA\n"); 764 cmd = SLAVE_TRIGGER_CMD; 765 if (i2c_bus->mode == DMA_MODE) { 766 cmd |= AST_I2CS_TX_DMA_EN; 767 i2c_slave_event(i2c_bus->slave, 768 I2C_SLAVE_READ_PROCESSED, 769 &i2c_bus->slave_dma_buf[0]); 770 dev_dbg(i2c_bus->dev, "tx : [%02x]", 771 i2c_bus->slave_dma_buf[0]); 772 writel(0, i2c_bus->reg_base + AST_I2CS_DMA_LEN_STS); 773 writel(AST_I2CS_SET_TX_DMA_LEN(1), 774 i2c_bus->reg_base + AST_I2CS_DMA_LEN); 775 } else if (i2c_bus->mode == BUFF_MODE) { 776 cmd |= AST_I2CS_TX_BUFF_EN; 777 i2c_slave_event(i2c_bus->slave, 778 I2C_SLAVE_READ_PROCESSED, 779 &value); 780 dev_dbg(i2c_bus->dev, "tx: [%02x]\n", value); 781 writeb(value, i2c_bus->buf_base); 782 writel(AST_I2CC_SET_TX_BUF_LEN(1), 783 i2c_bus->reg_base + AST_I2CC_BUFF_CTRL); 784 } else { 785 cmd &= ~AST_I2CS_PKT_MODE_EN; 786 cmd |= AST_I2CS_TX_CMD; 787 i2c_slave_event(i2c_bus->slave, 788 I2C_SLAVE_READ_PROCESSED, 789 &byte_data); 790 dev_dbg(i2c_bus->dev, "tx: [%02x]\n", 791 byte_data); 792 writel(byte_data, i2c_bus->reg_base + 793 AST_I2CC_STS_AND_BUFF); 794 } 795 writel(cmd, i2c_bus->reg_base + AST_I2CS_CMD_STS); 796 break; 797 798 case AST_I2CS_TX_NAK | AST_I2CS_STOP: 799 /* it just tx complete */ 800 dev_dbg(i2c_bus->dev, 801 "S: AST_I2CS_TX_NAK | AST_I2CS_STOP\n"); 802 cmd = SLAVE_TRIGGER_CMD; 803 i2c_slave_event(i2c_bus->slave, I2C_SLAVE_STOP, &value); 804 if (i2c_bus->mode == DMA_MODE) { 805 cmd |= AST_I2CS_RX_DMA_EN; 806 writel(0, i2c_bus->reg_base + AST_I2CS_DMA_LEN_STS); 807 writel(AST_I2CS_SET_RX_DMA_LEN(I2C_SLAVE_MSG_BUF_SIZE), 808 i2c_bus->reg_base + AST_I2CS_DMA_LEN); 809 } else if (i2c_bus->mode == BUFF_MODE) { 810 cmd |= AST_I2CS_RX_BUFF_EN; 811 writel(AST_I2CC_SET_RX_BUF_LEN(i2c_bus->buf_size), 812 i2c_bus->reg_base + AST_I2CC_BUFF_CTRL); 813 } else { 814 cmd &= ~AST_I2CS_PKT_MODE_EN; 815 } 816 writel(cmd, i2c_bus->reg_base + AST_I2CS_CMD_STS); 817 break; 818 819 default: 820 dev_dbg(i2c_bus->dev, 821 "todo slave sts case %x, now %x\n", sts, 822 readl(i2c_bus->reg_base + AST_I2CS_ISR)); 823 break; 824 } 825 } 826 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org