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Message-ID: <202108231233.0407cH7j-lkp@intel.com>
Date: Mon, 23 Aug 2021 12:24:42 +0800
From: kernel test robot <lkp@...el.com>
To: Heiner Kallweit <hkallweit1@...il.com>
Cc: clang-built-linux@...glegroups.com, kbuild-all@...ts.01.org,
netdev@...r.kernel.org
Subject: [net-next:master 6/16]
drivers/net/ethernet/sfc/falcon/efx.c:2792:13: error: implicit declaration
of function 'pci_vpd_alloc'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git master
head: 8d63ee602da381c437c0a4ef7ea882b71d829eb6
commit: 3873a9a4d8a87d4a15ff0083cf3b173b190c9089 [6/16] sfc: falcon: Read VPD with pci_vpd_alloc()
config: riscv-randconfig-r014-20210822 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 79b55e5038324e61a3abf4e6a9a949c473edd858)
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 riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/commit/?id=3873a9a4d8a87d4a15ff0083cf3b173b190c9089
git remote add net-next https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git
git fetch --no-tags net-next master
git checkout 3873a9a4d8a87d4a15ff0083cf3b173b190c9089
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All error/warnings (new ones prefixed by >>):
In file included from drivers/net/ethernet/sfc/falcon/efx.c:9:
In file included from include/linux/pci.h:38:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:36:51: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
^
In file included from drivers/net/ethernet/sfc/falcon/efx.c:9:
In file included from include/linux/pci.h:38:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:34:51: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
^
In file included from drivers/net/ethernet/sfc/falcon/efx.c:9:
In file included from include/linux/pci.h:38:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:1024:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
~~~~~~~~~~ ^
>> drivers/net/ethernet/sfc/falcon/efx.c:2792:13: error: implicit declaration of function 'pci_vpd_alloc' [-Werror,-Wimplicit-function-declaration]
vpd_data = pci_vpd_alloc(dev, &vpd_size);
^
>> drivers/net/ethernet/sfc/falcon/efx.c:2792:11: warning: incompatible integer to pointer conversion assigning to 'u8 *' (aka 'unsigned char *') from 'int' [-Wint-conversion]
vpd_data = pci_vpd_alloc(dev, &vpd_size);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8 warnings and 1 error generated.
vim +/pci_vpd_alloc +2792 drivers/net/ethernet/sfc/falcon/efx.c
2781
2782 /* NIC VPD information
2783 * Called during probe to display the part number of the installed NIC.
2784 */
2785 static void ef4_probe_vpd_strings(struct ef4_nic *efx)
2786 {
2787 struct pci_dev *dev = efx->pci_dev;
2788 int ro_start, ro_size, i, j;
2789 unsigned int vpd_size;
2790 u8 *vpd_data;
2791
> 2792 vpd_data = pci_vpd_alloc(dev, &vpd_size);
2793 if (IS_ERR(vpd_data)) {
2794 pci_warn(dev, "Unable to read VPD\n");
2795 return;
2796 }
2797
2798 /* Get the Read only section */
2799 ro_start = pci_vpd_find_tag(vpd_data, vpd_size, PCI_VPD_LRDT_RO_DATA);
2800 if (ro_start < 0) {
2801 netif_err(efx, drv, efx->net_dev, "VPD Read-only not found\n");
2802 goto out;
2803 }
2804
2805 ro_size = pci_vpd_lrdt_size(&vpd_data[ro_start]);
2806 j = ro_size;
2807 i = ro_start + PCI_VPD_LRDT_TAG_SIZE;
2808 if (i + j > vpd_size)
2809 j = vpd_size - i;
2810
2811 /* Get the Part number */
2812 i = pci_vpd_find_info_keyword(vpd_data, i, j, "PN");
2813 if (i < 0) {
2814 netif_err(efx, drv, efx->net_dev, "Part number not found\n");
2815 goto out;
2816 }
2817
2818 j = pci_vpd_info_field_size(&vpd_data[i]);
2819 i += PCI_VPD_INFO_FLD_HDR_SIZE;
2820 if (i + j > vpd_size) {
2821 netif_err(efx, drv, efx->net_dev, "Incomplete part number\n");
2822 goto out;
2823 }
2824
2825 netif_info(efx, drv, efx->net_dev,
2826 "Part Number : %.*s\n", j, &vpd_data[i]);
2827
2828 i = ro_start + PCI_VPD_LRDT_TAG_SIZE;
2829 j = ro_size;
2830 i = pci_vpd_find_info_keyword(vpd_data, i, j, "SN");
2831 if (i < 0) {
2832 netif_err(efx, drv, efx->net_dev, "Serial number not found\n");
2833 goto out;
2834 }
2835
2836 j = pci_vpd_info_field_size(&vpd_data[i]);
2837 i += PCI_VPD_INFO_FLD_HDR_SIZE;
2838 if (i + j > vpd_size) {
2839 netif_err(efx, drv, efx->net_dev, "Incomplete serial number\n");
2840 goto out;
2841 }
2842
2843 efx->vpd_sn = kmalloc(j + 1, GFP_KERNEL);
2844 if (!efx->vpd_sn)
2845 goto out;
2846
2847 snprintf(efx->vpd_sn, j + 1, "%s", &vpd_data[i]);
2848 out:
2849 kfree(vpd_data);
2850 }
2851
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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