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: i386-allmodconfig (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): >> 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 '__builtin_memcmp' makes pointer from integer without a cast [-Wint-conversion] return memcmp(buf, hw_chip_id, sizeof(buf)); ^ In file included from arch/x86/include/asm/string.h:2:0, from include/linux/string.h:18, from arch/x86/include/asm/page_32.h:34, from arch/x86/include/asm/page.h:13, from arch/x86/include/asm/thread_info.h:11, 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: arch/x86/include/asm/string_32.h:202:16: note: expected 'const void *' but argument is of type 'u8 {aka const unsigned char}' #define memcmp __builtin_memcmp ^ >> include/linux/string.h:112:12: note: in expansion of macro 'memcmp' extern int memcmp(const void *,const void *,__kernel_size_t); ^ cc1: some warnings being treated as errors vim +114 drivers/gpu/drm/bridge/parade-ps8640.c 98 struct mipi_dsi_device dsi; 99 struct i2c_client *page[8]; 100 struct i2c_client *ddc_i2c; 101 struct regulator_bulk_data supplies[2]; 102 struct drm_panel *panel; 103 struct gpio_desc *gpio_rst_n; 104 struct gpio_desc *gpio_slp_n; 105 struct gpio_desc *gpio_mode_sel_n; 106 bool enabled; 107 108 /* firmware file info */ 109 bool in_fw_update; 110 struct ps8640_info info; 111 }; 112 113 static const u8 enc_ctrl_code[6] = {0xaa, 0x55, 0x50, 0x41, 0x52, 0x44}; > 114 static const u8 hw_chip_id = {0x00, 0x0a, 0x00, 0x30}; 115 116 static int ps8640_read(struct i2c_client *client, u8 reg, u8 *data, 117 u16 data_len) 118 { 119 int ret; 120 struct i2c_msg msgs[] = { 121 { 122 .addr = client->addr, --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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