tree: https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git pci/host-cleanups-wip head: ee559fc5aa013976c4415dbd9c14107b6eebaa10 commit: 737ab2fc44de8ab82fb7a8de73e084b1326ba13c [32/95] PCI: armada: Replace armada8k_readl() with dw_pcie_readl_rc() config: arm64-defconfig (attached as .config) compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 737ab2fc44de8ab82fb7a8de73e084b1326ba13c # save the attached .config to linux build tree make.cross ARCH=arm64 All warnings (new ones prefixed by >>): drivers/pci/host/pcie-armada8k.c: In function 'armada8k_pcie_link_up': >> drivers/pci/host/pcie-armada8k.c:74:24: warning: unused variable 'armada8k' [-Wunused-variable] struct armada8k_pcie *armada8k = to_armada8k_pcie(pp); ^~~~~~~~ vim +/armada8k +74 drivers/pci/host/pcie-armada8k.c 1b0a1b4c Bjorn Helgaas 2016-08-31 58 #define PCIE_AWUSER_REG (PCIE_VENDOR_REGS_OFFSET + 0x60) 1c52a513 Thomas Petazzoni 2016-04-26 59 /* 1c52a513 Thomas Petazzoni 2016-04-26 60 * AR/AW Cache defauls: Normal memory, Write-Back, Read / Write 1c52a513 Thomas Petazzoni 2016-04-26 61 * allocate 1c52a513 Thomas Petazzoni 2016-04-26 62 */ 1c52a513 Thomas Petazzoni 2016-04-26 63 #define ARCACHE_DEFAULT_VALUE 0x3511 1c52a513 Thomas Petazzoni 2016-04-26 64 #define AWCACHE_DEFAULT_VALUE 0x5311 1c52a513 Thomas Petazzoni 2016-04-26 65 1c52a513 Thomas Petazzoni 2016-04-26 66 #define DOMAIN_OUTER_SHAREABLE 0x2 1c52a513 Thomas Petazzoni 2016-04-26 67 #define AX_USER_DOMAIN_MASK 0x3 1c52a513 Thomas Petazzoni 2016-04-26 68 #define AX_USER_DOMAIN_SHIFT 4 1c52a513 Thomas Petazzoni 2016-04-26 69 1c52a513 Thomas Petazzoni 2016-04-26 70 #define to_armada8k_pcie(x) container_of(x, struct armada8k_pcie, pp) 1c52a513 Thomas Petazzoni 2016-04-26 71 1c52a513 Thomas Petazzoni 2016-04-26 72 static int armada8k_pcie_link_up(struct pcie_port *pp) 1c52a513 Thomas Petazzoni 2016-04-26 73 { ffbd5d9b Bjorn Helgaas 2016-08-31 @74 struct armada8k_pcie *armada8k = to_armada8k_pcie(pp); 1c52a513 Thomas Petazzoni 2016-04-26 75 u32 reg; 1c52a513 Thomas Petazzoni 2016-04-26 76 u32 mask = PCIE_GLB_STS_RDLH_LINK_UP | PCIE_GLB_STS_PHY_LINK_UP; 1c52a513 Thomas Petazzoni 2016-04-26 77 737ab2fc Bjorn Helgaas 2016-10-04 78 reg = dw_pcie_readl_rc(pp, PCIE_GLOBAL_STATUS_REG); 1c52a513 Thomas Petazzoni 2016-04-26 79 if ((reg & mask) == mask) 1c52a513 Thomas Petazzoni 2016-04-26 80 return 1; 1c52a513 Thomas Petazzoni 2016-04-26 81 1c52a513 Thomas Petazzoni 2016-04-26 82 dev_dbg(pp->dev, "No link detected (Global-Status: 0x%08x).\n", reg); :::::: The code at line 74 was first introduced by commit :::::: ffbd5d9b59163b56d4f7afb15e0f5a740f0c6ad2 PCI: armada: Name private struct pointer "armada8k" consistently :::::: TO: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> :::::: CC: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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