From: kbuild test robot <lkp-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: nicolas.pitre-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
brijesh.singh-5C7GfCeVMHo@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
airlied-cv59FeDIM0c@public.gmane.org,
linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
richard.weiyang-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
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lorenzo.pieralisi-5wv7dgnIgG8@public.gmane.org,
sthemmin-0li6OtcxBFHby3iVrkZq2A@public.gmane.org,
Baoquan He <bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org,
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chris-YvXeqwSYzG2sTnJN9+BGXg@public.gmane.org,
monstr-pSz03upnqPeHXe+LvDLADg@public.gmane.org,
linux-parisc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org,
dmitry.torokhov@gmail.c
Subject: Re: [PATCH v4 1/3] resource: Use list_head to link sibling resource
Date: Mon, 7 May 2018 19:42:14 +0800 [thread overview]
Message-ID: <201805071803.2MKgOLTP%fengguang.wu@intel.com> (raw)
In-Reply-To: <20180507063224.24229-2-bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Hi Baoquan,
I love your patch! Yet something to improve:
[auto build test ERROR on linus/master]
[also build test ERROR on v4.17-rc4 next-20180504]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Baoquan-He/resource-Use-list_head-to-link-sibling-resource/20180507-144345
config: powerpc-defconfig (attached as .config)
compiler: powerpc64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=powerpc
All errors (new ones prefixed by >>):
arch/powerpc/kernel/pci-common.c: In function 'pci_process_bridge_OF_ranges':
>> arch/powerpc/kernel/pci-common.c:764:44: error: incompatible types when assigning to type 'struct list_head' from type 'void *'
res->parent = res->child = res->sibling = NULL;
^
arch/powerpc/kernel/pci-common.c: In function 'reparent_resources':
>> arch/powerpc/kernel/pci-common.c:1100:10: error: assignment from incompatible pointer type [-Werror=incompatible-pointer-types]
for (pp = &parent->child; (p = *pp) != NULL; pp = &p->sibling) {
^
arch/powerpc/kernel/pci-common.c:1100:50: error: assignment from incompatible pointer type [-Werror=incompatible-pointer-types]
for (pp = &parent->child; (p = *pp) != NULL; pp = &p->sibling) {
^
>> arch/powerpc/kernel/pci-common.c:1113:13: error: incompatible types when assigning to type 'struct list_head' from type 'struct resource *'
res->child = *firstpp;
^
arch/powerpc/kernel/pci-common.c:1114:15: error: incompatible types when assigning to type 'struct list_head' from type 'struct resource *'
res->sibling = *pp;
^
>> arch/powerpc/kernel/pci-common.c:1117:9: error: incompatible types when assigning to type 'struct resource *' from type 'struct list_head'
for (p = res->child; p != NULL; p = p->sibling) {
^
arch/powerpc/kernel/pci-common.c:1117:36: error: incompatible types when assigning to type 'struct resource *' from type 'struct list_head'
for (p = res->child; p != NULL; p = p->sibling) {
^
cc1: all warnings being treated as errors
vim +764 arch/powerpc/kernel/pci-common.c
13dccb9e Benjamin Herrenschmidt 2007-12-11 642
13dccb9e Benjamin Herrenschmidt 2007-12-11 643 /**
13dccb9e Benjamin Herrenschmidt 2007-12-11 644 * pci_process_bridge_OF_ranges - Parse PCI bridge resources from device tree
13dccb9e Benjamin Herrenschmidt 2007-12-11 645 * @hose: newly allocated pci_controller to be setup
13dccb9e Benjamin Herrenschmidt 2007-12-11 646 * @dev: device node of the host bridge
13dccb9e Benjamin Herrenschmidt 2007-12-11 647 * @primary: set if primary bus (32 bits only, soon to be deprecated)
13dccb9e Benjamin Herrenschmidt 2007-12-11 648 *
13dccb9e Benjamin Herrenschmidt 2007-12-11 649 * This function will parse the "ranges" property of a PCI host bridge device
13dccb9e Benjamin Herrenschmidt 2007-12-11 650 * node and setup the resource mapping of a pci controller based on its
13dccb9e Benjamin Herrenschmidt 2007-12-11 651 * content.
13dccb9e Benjamin Herrenschmidt 2007-12-11 652 *
13dccb9e Benjamin Herrenschmidt 2007-12-11 653 * Life would be boring if it wasn't for a few issues that we have to deal
13dccb9e Benjamin Herrenschmidt 2007-12-11 654 * with here:
13dccb9e Benjamin Herrenschmidt 2007-12-11 655 *
13dccb9e Benjamin Herrenschmidt 2007-12-11 656 * - We can only cope with one IO space range and up to 3 Memory space
13dccb9e Benjamin Herrenschmidt 2007-12-11 657 * ranges. However, some machines (thanks Apple !) tend to split their
13dccb9e Benjamin Herrenschmidt 2007-12-11 658 * space into lots of small contiguous ranges. So we have to coalesce.
13dccb9e Benjamin Herrenschmidt 2007-12-11 659 *
13dccb9e Benjamin Herrenschmidt 2007-12-11 660 * - Some busses have IO space not starting at 0, which causes trouble with
13dccb9e Benjamin Herrenschmidt 2007-12-11 661 * the way we do our IO resource renumbering. The code somewhat deals with
13dccb9e Benjamin Herrenschmidt 2007-12-11 662 * it for 64 bits but I would expect problems on 32 bits.
13dccb9e Benjamin Herrenschmidt 2007-12-11 663 *
13dccb9e Benjamin Herrenschmidt 2007-12-11 664 * - Some 32 bits platforms such as 4xx can have physical space larger than
13dccb9e Benjamin Herrenschmidt 2007-12-11 665 * 32 bits so we need to use 64 bits values for the parsing
13dccb9e Benjamin Herrenschmidt 2007-12-11 666 */
cad5cef6 Greg Kroah-Hartman 2012-12-21 667 void pci_process_bridge_OF_ranges(struct pci_controller *hose,
cad5cef6 Greg Kroah-Hartman 2012-12-21 668 struct device_node *dev, int primary)
13dccb9e Benjamin Herrenschmidt 2007-12-11 669 {
858957ab Kevin Hao 2013-05-16 670 int memno = 0;
13dccb9e Benjamin Herrenschmidt 2007-12-11 671 struct resource *res;
654837e8 Andrew Murray 2014-02-25 672 struct of_pci_range range;
654837e8 Andrew Murray 2014-02-25 673 struct of_pci_range_parser parser;
13dccb9e Benjamin Herrenschmidt 2007-12-11 674
b7c670d6 Rob Herring 2017-08-21 675 printk(KERN_INFO "PCI host bridge %pOF %s ranges:\n",
b7c670d6 Rob Herring 2017-08-21 676 dev, primary ? "(primary)" : "");
13dccb9e Benjamin Herrenschmidt 2007-12-11 677
654837e8 Andrew Murray 2014-02-25 678 /* Check for ranges property */
654837e8 Andrew Murray 2014-02-25 679 if (of_pci_range_parser_init(&parser, dev))
13dccb9e Benjamin Herrenschmidt 2007-12-11 680 return;
13dccb9e Benjamin Herrenschmidt 2007-12-11 681
13dccb9e Benjamin Herrenschmidt 2007-12-11 682 /* Parse it */
654837e8 Andrew Murray 2014-02-25 683 for_each_of_pci_range(&parser, &range) {
e9f82cb7 Benjamin Herrenschmidt 2008-10-14 684 /* If we failed translation or got a zero-sized region
e9f82cb7 Benjamin Herrenschmidt 2008-10-14 685 * (some FW try to feed us with non sensical zero sized regions
e9f82cb7 Benjamin Herrenschmidt 2008-10-14 686 * such as power3 which look like some kind of attempt at exposing
e9f82cb7 Benjamin Herrenschmidt 2008-10-14 687 * the VGA memory hole)
e9f82cb7 Benjamin Herrenschmidt 2008-10-14 688 */
654837e8 Andrew Murray 2014-02-25 689 if (range.cpu_addr == OF_BAD_ADDR || range.size == 0)
13dccb9e Benjamin Herrenschmidt 2007-12-11 690 continue;
13dccb9e Benjamin Herrenschmidt 2007-12-11 691
13dccb9e Benjamin Herrenschmidt 2007-12-11 692 /* Act based on address space type */
13dccb9e Benjamin Herrenschmidt 2007-12-11 693 res = NULL;
654837e8 Andrew Murray 2014-02-25 694 switch (range.flags & IORESOURCE_TYPE_BITS) {
654837e8 Andrew Murray 2014-02-25 695 case IORESOURCE_IO:
13dccb9e Benjamin Herrenschmidt 2007-12-11 696 printk(KERN_INFO
13dccb9e Benjamin Herrenschmidt 2007-12-11 697 " IO 0x%016llx..0x%016llx -> 0x%016llx\n",
654837e8 Andrew Murray 2014-02-25 698 range.cpu_addr, range.cpu_addr + range.size - 1,
654837e8 Andrew Murray 2014-02-25 699 range.pci_addr);
13dccb9e Benjamin Herrenschmidt 2007-12-11 700
13dccb9e Benjamin Herrenschmidt 2007-12-11 701 /* We support only one IO range */
13dccb9e Benjamin Herrenschmidt 2007-12-11 702 if (hose->pci_io_size) {
13dccb9e Benjamin Herrenschmidt 2007-12-11 703 printk(KERN_INFO
13dccb9e Benjamin Herrenschmidt 2007-12-11 704 " \\--> Skipped (too many) !\n");
13dccb9e Benjamin Herrenschmidt 2007-12-11 705 continue;
13dccb9e Benjamin Herrenschmidt 2007-12-11 706 }
13dccb9e Benjamin Herrenschmidt 2007-12-11 707 #ifdef CONFIG_PPC32
13dccb9e Benjamin Herrenschmidt 2007-12-11 708 /* On 32 bits, limit I/O space to 16MB */
654837e8 Andrew Murray 2014-02-25 709 if (range.size > 0x01000000)
654837e8 Andrew Murray 2014-02-25 710 range.size = 0x01000000;
13dccb9e Benjamin Herrenschmidt 2007-12-11 711
13dccb9e Benjamin Herrenschmidt 2007-12-11 712 /* 32 bits needs to map IOs here */
654837e8 Andrew Murray 2014-02-25 713 hose->io_base_virt = ioremap(range.cpu_addr,
654837e8 Andrew Murray 2014-02-25 714 range.size);
13dccb9e Benjamin Herrenschmidt 2007-12-11 715
13dccb9e Benjamin Herrenschmidt 2007-12-11 716 /* Expect trouble if pci_addr is not 0 */
13dccb9e Benjamin Herrenschmidt 2007-12-11 717 if (primary)
13dccb9e Benjamin Herrenschmidt 2007-12-11 718 isa_io_base =
13dccb9e Benjamin Herrenschmidt 2007-12-11 719 (unsigned long)hose->io_base_virt;
13dccb9e Benjamin Herrenschmidt 2007-12-11 720 #endif /* CONFIG_PPC32 */
13dccb9e Benjamin Herrenschmidt 2007-12-11 721 /* pci_io_size and io_base_phys always represent IO
13dccb9e Benjamin Herrenschmidt 2007-12-11 722 * space starting at 0 so we factor in pci_addr
13dccb9e Benjamin Herrenschmidt 2007-12-11 723 */
654837e8 Andrew Murray 2014-02-25 724 hose->pci_io_size = range.pci_addr + range.size;
654837e8 Andrew Murray 2014-02-25 725 hose->io_base_phys = range.cpu_addr - range.pci_addr;
13dccb9e Benjamin Herrenschmidt 2007-12-11 726
13dccb9e Benjamin Herrenschmidt 2007-12-11 727 /* Build resource */
13dccb9e Benjamin Herrenschmidt 2007-12-11 728 res = &hose->io_resource;
654837e8 Andrew Murray 2014-02-25 729 range.cpu_addr = range.pci_addr;
13dccb9e Benjamin Herrenschmidt 2007-12-11 730 break;
654837e8 Andrew Murray 2014-02-25 731 case IORESOURCE_MEM:
13dccb9e Benjamin Herrenschmidt 2007-12-11 732 printk(KERN_INFO
13dccb9e Benjamin Herrenschmidt 2007-12-11 733 " MEM 0x%016llx..0x%016llx -> 0x%016llx %s\n",
654837e8 Andrew Murray 2014-02-25 734 range.cpu_addr, range.cpu_addr + range.size - 1,
654837e8 Andrew Murray 2014-02-25 735 range.pci_addr,
654837e8 Andrew Murray 2014-02-25 736 (range.pci_space & 0x40000000) ?
654837e8 Andrew Murray 2014-02-25 737 "Prefetch" : "");
13dccb9e Benjamin Herrenschmidt 2007-12-11 738
13dccb9e Benjamin Herrenschmidt 2007-12-11 739 /* We support only 3 memory ranges */
13dccb9e Benjamin Herrenschmidt 2007-12-11 740 if (memno >= 3) {
13dccb9e Benjamin Herrenschmidt 2007-12-11 741 printk(KERN_INFO
13dccb9e Benjamin Herrenschmidt 2007-12-11 742 " \\--> Skipped (too many) !\n");
13dccb9e Benjamin Herrenschmidt 2007-12-11 743 continue;
13dccb9e Benjamin Herrenschmidt 2007-12-11 744 }
13dccb9e Benjamin Herrenschmidt 2007-12-11 745 /* Handles ISA memory hole space here */
654837e8 Andrew Murray 2014-02-25 746 if (range.pci_addr == 0) {
13dccb9e Benjamin Herrenschmidt 2007-12-11 747 if (primary || isa_mem_base == 0)
654837e8 Andrew Murray 2014-02-25 748 isa_mem_base = range.cpu_addr;
654837e8 Andrew Murray 2014-02-25 749 hose->isa_mem_phys = range.cpu_addr;
654837e8 Andrew Murray 2014-02-25 750 hose->isa_mem_size = range.size;
13dccb9e Benjamin Herrenschmidt 2007-12-11 751 }
13dccb9e Benjamin Herrenschmidt 2007-12-11 752
13dccb9e Benjamin Herrenschmidt 2007-12-11 753 /* Build resource */
654837e8 Andrew Murray 2014-02-25 754 hose->mem_offset[memno] = range.cpu_addr -
654837e8 Andrew Murray 2014-02-25 755 range.pci_addr;
13dccb9e Benjamin Herrenschmidt 2007-12-11 756 res = &hose->mem_resources[memno++];
13dccb9e Benjamin Herrenschmidt 2007-12-11 757 break;
13dccb9e Benjamin Herrenschmidt 2007-12-11 758 }
13dccb9e Benjamin Herrenschmidt 2007-12-11 759 if (res != NULL) {
aeba3731 Michael Ellerman 2014-10-16 760 res->name = dev->full_name;
aeba3731 Michael Ellerman 2014-10-16 761 res->flags = range.flags;
aeba3731 Michael Ellerman 2014-10-16 762 res->start = range.cpu_addr;
aeba3731 Michael Ellerman 2014-10-16 763 res->end = range.cpu_addr + range.size - 1;
aeba3731 Michael Ellerman 2014-10-16 @764 res->parent = res->child = res->sibling = NULL;
13dccb9e Benjamin Herrenschmidt 2007-12-11 765 }
13dccb9e Benjamin Herrenschmidt 2007-12-11 766 }
13dccb9e Benjamin Herrenschmidt 2007-12-11 767 }
fa462f2d Benjamin Herrenschmidt 2007-12-20 768
:::::: The code at line 764 was first introduced by commit
:::::: aeba3731b150188685225b510886f1370d8814de powerpc/pci: Fix IO space breakage after of_pci_range_to_resource() change
:::::: TO: Michael Ellerman <mpe-Gsx/Oe8HsFggBc27wqDAHg@public.gmane.org>
:::::: CC: Michael Ellerman <mpe-Gsx/Oe8HsFggBc27wqDAHg@public.gmane.org>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
next prev parent reply other threads:[~2018-05-07 11:42 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-07 6:32 [PATCH v4 0/3] resource: Use list_head to link sibling resource Baoquan He
[not found] ` <20180507063224.24229-1-bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2018-05-07 6:32 ` [PATCH v4 1/3] " Baoquan He
[not found] ` <20180507063224.24229-2-bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2018-05-07 11:42 ` kbuild test robot [this message]
[not found] ` <201805071803.2MKgOLTP%fengguang.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2018-05-09 2:08 ` Baoquan He
2018-05-07 15:50 ` kbuild test robot
[not found] ` <201805072210.H1bsHs9Y%fengguang.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2018-05-08 12:12 ` Baoquan He
2018-05-07 6:32 ` [PATCH v4 2/3] resource: add walk_system_ram_res_rev() Baoquan He
2018-05-07 6:32 ` [PATCH v4 3/3] kexec_file: Load kernel at top of system RAM if required Baoquan He
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