Hi Jitao, [auto build test WARNING on drm/drm-next] [also build test WARNING on v4.5 next-20160316] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system] url: https://github.com/0day-ci/linux/commits/Jitao-Shi/Documentation-bridge-Add-documentation-for-ps8640-DT-properties/20160316-213031 base: git://people.freedesktop.org/~airlied/linux.git drm-next config: x86_64-allmodconfig (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): include/linux/compiler.h:228:8: sparse: attribute 'no_sanitize_address': unknown attribute drivers/gpu/drm/bridge/parade-ps8640.c:114:30: sparse: invalid initializer drivers/gpu/drm/bridge/parade-ps8640.c:430:24: sparse: undefined identifier 'of_find_mipi_dsi_host_by_node' drivers/gpu/drm/bridge/parade-ps8640.c:114:37: warning: excess elements in scalar initializer static const u8 hw_chip_id = {0x00, 0x0a, 0x00, 0x30}; ^ drivers/gpu/drm/bridge/parade-ps8640.c:114:37: note: (near initialization for 'hw_chip_id') drivers/gpu/drm/bridge/parade-ps8640.c:114:43: warning: excess elements in scalar initializer static const u8 hw_chip_id = {0x00, 0x0a, 0x00, 0x30}; ^ drivers/gpu/drm/bridge/parade-ps8640.c:114:43: note: (near initialization for 'hw_chip_id') drivers/gpu/drm/bridge/parade-ps8640.c:114:49: warning: excess elements in scalar initializer static const u8 hw_chip_id = {0x00, 0x0a, 0x00, 0x30}; ^ drivers/gpu/drm/bridge/parade-ps8640.c:114:49: note: (near initialization for 'hw_chip_id') drivers/gpu/drm/bridge/parade-ps8640.c: In function 'ps8640_bridge_attach': drivers/gpu/drm/bridge/parade-ps8640.c:430:10: error: implicit declaration of function 'of_find_mipi_dsi_host_by_node' [-Werror=implicit-function-declaration] host = of_find_mipi_dsi_host_by_node(dsi_node); ^ drivers/gpu/drm/bridge/parade-ps8640.c:430:8: warning: assignment makes pointer from integer without a cast [-Wint-conversion] host = of_find_mipi_dsi_host_by_node(dsi_node); ^ drivers/gpu/drm/bridge/parade-ps8640.c: In function 'ps8640_check_chip_id': >> drivers/gpu/drm/bridge/parade-ps8640.c:717:21: warning: passing argument 2 of 'memcmp' makes pointer from integer without a cast [-Wint-conversion] return memcmp(buf, hw_chip_id, sizeof(buf)); ^ In file included from include/linux/bitmap.h:8:0, from include/linux/cpumask.h:11, from arch/x86/include/asm/cpumask.h:4, from arch/x86/include/asm/msr.h:10, from arch/x86/include/asm/processor.h:20, from arch/x86/include/asm/thread_info.h:52, from include/linux/thread_info.h:54, from arch/x86/include/asm/preempt.h:6, from include/linux/preempt.h:59, from include/linux/spinlock.h:50, from include/linux/mmzone.h:7, from include/linux/gfp.h:5, from include/linux/firmware.h:6, from drivers/gpu/drm/bridge/parade-ps8640.c:16: include/linux/string.h:112:12: note: expected 'const void *' but argument is of type 'u8 {aka const unsigned char}' extern int memcmp(const void *,const void *,__kernel_size_t); ^ cc1: some warnings being treated as errors sparse warnings: (new ones prefixed by >>) include/linux/compiler.h:228:8: sparse: attribute 'no_sanitize_address': unknown attribute >> drivers/gpu/drm/bridge/parade-ps8640.c:114:30: sparse: invalid initializer drivers/gpu/drm/bridge/parade-ps8640.c:430:24: sparse: undefined identifier 'of_find_mipi_dsi_host_by_node' drivers/gpu/drm/bridge/parade-ps8640.c:114:37: warning: excess elements in scalar initializer static const u8 hw_chip_id = {0x00, 0x0a, 0x00, 0x30}; ^ drivers/gpu/drm/bridge/parade-ps8640.c:114:37: note: (near initialization for 'hw_chip_id') drivers/gpu/drm/bridge/parade-ps8640.c:114:43: warning: excess elements in scalar initializer static const u8 hw_chip_id = {0x00, 0x0a, 0x00, 0x30}; ^ drivers/gpu/drm/bridge/parade-ps8640.c:114:43: note: (near initialization for 'hw_chip_id') drivers/gpu/drm/bridge/parade-ps8640.c:114:49: warning: excess elements in scalar initializer static const u8 hw_chip_id = {0x00, 0x0a, 0x00, 0x30}; ^ drivers/gpu/drm/bridge/parade-ps8640.c:114:49: note: (near initialization for 'hw_chip_id') drivers/gpu/drm/bridge/parade-ps8640.c: In function 'ps8640_bridge_attach': drivers/gpu/drm/bridge/parade-ps8640.c:430:10: error: implicit declaration of function 'of_find_mipi_dsi_host_by_node' [-Werror=implicit-function-declaration] host = of_find_mipi_dsi_host_by_node(dsi_node); ^ drivers/gpu/drm/bridge/parade-ps8640.c:430:8: warning: assignment makes pointer from integer without a cast [-Wint-conversion] host = of_find_mipi_dsi_host_by_node(dsi_node); ^ drivers/gpu/drm/bridge/parade-ps8640.c: In function 'ps8640_check_chip_id': drivers/gpu/drm/bridge/parade-ps8640.c:717:21: warning: passing argument 2 of 'memcmp' makes pointer from integer without a cast [-Wint-conversion] return memcmp(buf, hw_chip_id, sizeof(buf)); ^ In file included from include/linux/bitmap.h:8:0, from include/linux/cpumask.h:11, from arch/x86/include/asm/cpumask.h:4, from arch/x86/include/asm/msr.h:10, from arch/x86/include/asm/processor.h:20, from arch/x86/include/asm/thread_info.h:52, from include/linux/thread_info.h:54, from arch/x86/include/asm/preempt.h:6, from include/linux/preempt.h:59, from include/linux/spinlock.h:50, from include/linux/mmzone.h:7, from include/linux/gfp.h:5, from include/linux/firmware.h:6, from drivers/gpu/drm/bridge/parade-ps8640.c:16: include/linux/string.h:112:12: note: expected 'const void *' but argument is of type 'u8 {aka const unsigned char}' extern int memcmp(const void *,const void *,__kernel_size_t); ^ cc1: some warnings being treated as errors vim +/memcmp +717 drivers/gpu/drm/bridge/parade-ps8640.c 701 702 ret = ps8640_wait_rom_idle(ps_bridge); 703 if (ret) { 704 dev_err(dev, "fail wait rom idle: %d\n", ret); 705 return ret; 706 } 707 708 return 0; 709 } 710 711 static int ps8640_check_chip_id(struct ps8640 *ps_bridge) 712 { 713 struct i2c_client *client = ps_bridge->page[4]; 714 u8 buf[4]; 715 716 ps8640_read(client, PAGE4_REV_L, buf, 4); > 717 return memcmp(buf, hw_chip_id, sizeof(buf)); 718 } 719 720 static int ps8640_validate_firmware(struct ps8640 *ps_bridge, 721 const struct firmware *fw) 722 { 723 struct i2c_client *client = ps_bridge->page[0]; 724 u16 fw_chip_id; 725 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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