Hi Hans, I love your patch! Yet something to improve: [auto build test ERROR on efi/next] [cannot apply to v5.4-rc1 next-20191004] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Hans-de-Goede/efi-firmware-platform-x86-Add-EFI-embedded-fw-support/20191005-021239 base: https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git next config: x86_64-randconfig-a004-201939 (attached as .config) compiler: gcc-5 (Ubuntu 5.5.0-12ubuntu1) 5.5.0 20171010 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/firmware/efi/embedded-firmware.c: In function 'efi_check_md_for_embedded_firmware': >> drivers/firmware/efi/embedded-firmware.c:64:3: error: implicit declaration of function 'sha256_init' [-Werror=implicit-function-declaration] sha256_init(&sctx); ^ >> drivers/firmware/efi/embedded-firmware.c:65:3: error: implicit declaration of function 'sha256_update' [-Werror=implicit-function-declaration] sha256_update(&sctx, map + i, desc->length); ^ drivers/firmware/efi/embedded-firmware.c:66:3: error: implicit declaration of function 'sha256_final' [-Werror=implicit-function-declaration] sha256_final(&sctx, sha256); ^ cc1: some warnings being treated as errors vim +/sha256_init +64 drivers/firmware/efi/embedded-firmware.c 3977d46d946ae2 Hans de Goede 2019-10-04 32 3977d46d946ae2 Hans de Goede 2019-10-04 33 /* 3977d46d946ae2 Hans de Goede 2019-10-04 34 * Note the efi_check_for_embedded_firmwares() code currently makes the 3977d46d946ae2 Hans de Goede 2019-10-04 35 * following 2 assumptions. This may needs to be revisited if embedded firmware 3977d46d946ae2 Hans de Goede 2019-10-04 36 * is found where this is not true: 3977d46d946ae2 Hans de Goede 2019-10-04 37 * 1) The firmware is only found in EFI_BOOT_SERVICES_CODE memory segments 3977d46d946ae2 Hans de Goede 2019-10-04 38 * 2) The firmware always starts at an offset which is a multiple of 8 bytes 3977d46d946ae2 Hans de Goede 2019-10-04 39 */ 3977d46d946ae2 Hans de Goede 2019-10-04 40 static int __init efi_check_md_for_embedded_firmware( 3977d46d946ae2 Hans de Goede 2019-10-04 41 efi_memory_desc_t *md, const struct efi_embedded_fw_desc *desc) 3977d46d946ae2 Hans de Goede 2019-10-04 42 { 3977d46d946ae2 Hans de Goede 2019-10-04 43 const u64 prefix = *((u64 *)desc->prefix); 3977d46d946ae2 Hans de Goede 2019-10-04 44 struct sha256_state sctx; 3977d46d946ae2 Hans de Goede 2019-10-04 45 struct embedded_fw *fw; 3977d46d946ae2 Hans de Goede 2019-10-04 46 u8 sha256[32]; 3977d46d946ae2 Hans de Goede 2019-10-04 47 u64 i, size; 3977d46d946ae2 Hans de Goede 2019-10-04 48 void *map; 3977d46d946ae2 Hans de Goede 2019-10-04 49 3977d46d946ae2 Hans de Goede 2019-10-04 50 size = md->num_pages << EFI_PAGE_SHIFT; 3977d46d946ae2 Hans de Goede 2019-10-04 51 map = memremap(md->phys_addr, size, MEMREMAP_WB); 3977d46d946ae2 Hans de Goede 2019-10-04 52 if (!map) { 3977d46d946ae2 Hans de Goede 2019-10-04 53 pr_err("Error mapping EFI mem at %#llx\n", md->phys_addr); 3977d46d946ae2 Hans de Goede 2019-10-04 54 return -ENOMEM; 3977d46d946ae2 Hans de Goede 2019-10-04 55 } 3977d46d946ae2 Hans de Goede 2019-10-04 56 3977d46d946ae2 Hans de Goede 2019-10-04 57 size -= desc->length; 3977d46d946ae2 Hans de Goede 2019-10-04 58 for (i = 0; i < size; i += 8) { 3977d46d946ae2 Hans de Goede 2019-10-04 59 u64 *mem = map + i; 3977d46d946ae2 Hans de Goede 2019-10-04 60 3977d46d946ae2 Hans de Goede 2019-10-04 61 if (*mem != prefix) 3977d46d946ae2 Hans de Goede 2019-10-04 62 continue; 3977d46d946ae2 Hans de Goede 2019-10-04 63 3977d46d946ae2 Hans de Goede 2019-10-04 @64 sha256_init(&sctx); 3977d46d946ae2 Hans de Goede 2019-10-04 @65 sha256_update(&sctx, map + i, desc->length); 3977d46d946ae2 Hans de Goede 2019-10-04 66 sha256_final(&sctx, sha256); 3977d46d946ae2 Hans de Goede 2019-10-04 67 if (memcmp(sha256, desc->sha256, 32) == 0) 3977d46d946ae2 Hans de Goede 2019-10-04 68 break; 3977d46d946ae2 Hans de Goede 2019-10-04 69 } 3977d46d946ae2 Hans de Goede 2019-10-04 70 if (i >= size) { 3977d46d946ae2 Hans de Goede 2019-10-04 71 memunmap(map); 3977d46d946ae2 Hans de Goede 2019-10-04 72 return -ENOENT; 3977d46d946ae2 Hans de Goede 2019-10-04 73 } 3977d46d946ae2 Hans de Goede 2019-10-04 74 3977d46d946ae2 Hans de Goede 2019-10-04 75 pr_info("Found EFI embedded fw '%s'\n", desc->name); 3977d46d946ae2 Hans de Goede 2019-10-04 76 3977d46d946ae2 Hans de Goede 2019-10-04 77 fw = kmalloc(sizeof(*fw), GFP_KERNEL); 3977d46d946ae2 Hans de Goede 2019-10-04 78 if (!fw) { 3977d46d946ae2 Hans de Goede 2019-10-04 79 memunmap(map); 3977d46d946ae2 Hans de Goede 2019-10-04 80 return -ENOMEM; 3977d46d946ae2 Hans de Goede 2019-10-04 81 } 3977d46d946ae2 Hans de Goede 2019-10-04 82 3977d46d946ae2 Hans de Goede 2019-10-04 83 fw->data = kmemdup(map + i, desc->length, GFP_KERNEL); 3977d46d946ae2 Hans de Goede 2019-10-04 84 memunmap(map); 3977d46d946ae2 Hans de Goede 2019-10-04 85 if (!fw->data) { 3977d46d946ae2 Hans de Goede 2019-10-04 86 kfree(fw); 3977d46d946ae2 Hans de Goede 2019-10-04 87 return -ENOMEM; 3977d46d946ae2 Hans de Goede 2019-10-04 88 } 3977d46d946ae2 Hans de Goede 2019-10-04 89 3977d46d946ae2 Hans de Goede 2019-10-04 90 fw->name = desc->name; 3977d46d946ae2 Hans de Goede 2019-10-04 91 fw->length = desc->length; 3977d46d946ae2 Hans de Goede 2019-10-04 92 list_add(&fw->list, &found_fw_list); 3977d46d946ae2 Hans de Goede 2019-10-04 93 3977d46d946ae2 Hans de Goede 2019-10-04 94 return 0; 3977d46d946ae2 Hans de Goede 2019-10-04 95 } 3977d46d946ae2 Hans de Goede 2019-10-04 96 :::::: The code at line 64 was first introduced by commit :::::: 3977d46d946ae2699ac2c8196d52fb9b303909c9 efi: Add embedded peripheral firmware support :::::: TO: Hans de Goede <hdegoede@xxxxxxxxxx> :::::: CC: 0day robot <lkp@xxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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