Hi Marc-André, [auto build test WARNING on linus/master] [also build test WARNING on v4.14-rc1 next-20170922] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/marcandre-lureau-redhat-com/fw_cfg-add-DMA-operations-etc-vmcoreinfo-support/20170922-182716 config: i386-randconfig-x000-201738 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): drivers//firmware/qemu_fw_cfg.c: In function 'fw_cfg_dma_transfer': >> drivers//firmware/qemu_fw_cfg.c:139:18: warning: right shift count >= width >> of type [-Wshift-count-overflow] iowrite32be(dma >> 32, fw_cfg_reg_dma); ^~ In file included from include/uapi/linux/stddef.h:1:0, from include/linux/stddef.h:4, from include/uapi/linux/posix_types.h:4, from include/uapi/linux/types.h:13, from include/linux/types.h:5, from include/linux/list.h:4, from include/linux/module.h:9, from drivers//firmware/qemu_fw_cfg.c:30: drivers//firmware/qemu_fw_cfg.c: At top level: include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'strcpy' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:421:2: note: in expansion of macro 'if' if (p_size == (size_t)-1 && q_size == (size_t)-1) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'kmemdup' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:411:2: note: in expansion of macro 'if' if (p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'kmemdup' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:409:2: note: in expansion of macro 'if' if (__builtin_constant_p(size) && p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr_inv' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:400:2: note: in expansion of macro 'if' if (p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr_inv' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:398:2: note: in expansion of macro 'if' if (__builtin_constant_p(size) && p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:389:2: note: in expansion of macro 'if' if (p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:387:2: note: in expansion of macro 'if' if (__builtin_constant_p(size) && p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memcmp' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:379:2: note: in expansion of macro 'if' if (p_size < size || q_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memcmp' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:376:3: note: in expansion of macro 'if' if (q_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memcmp' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:374:3: note: in expansion of macro 'if' if (p_size < size) vim +139 drivers//firmware/qemu_fw_cfg.c 102 103 static ssize_t fw_cfg_dma_transfer(void *address, u32 length, u32 control) 104 { 105 dma_addr_t dma_addr = 0; 106 struct fw_cfg_dma *d; 107 dma_addr_t dma; 108 ssize_t ret = length; 109 enum dma_data_direction dir = 110 (control & FW_CFG_DMA_CTL_READ ? DMA_FROM_DEVICE : 0); 111 112 if (address && length) { 113 dma_addr = dma_map_single(dev, address, length, dir); 114 if (dma_mapping_error(NULL, dma_addr)) { 115 WARN(1, "%s: failed to map address\n", __func__); 116 return -EFAULT; 117 } 118 } 119 120 d = kmalloc(sizeof(*d), GFP_KERNEL | GFP_DMA); 121 if (!d) { 122 ret = -ENOMEM; 123 goto end; 124 } 125 126 dma = dma_map_single(dev, d, sizeof(*d), DMA_BIDIRECTIONAL); 127 if (dma_mapping_error(NULL, dma)) { 128 WARN(1, "%s: failed to map fw_cfg_dma\n", __func__); 129 ret = -EFAULT; 130 goto end; 131 } 132 133 *d = (struct fw_cfg_dma) { 134 .address = cpu_to_be64(dma_addr), 135 .length = cpu_to_be32(length), 136 .control = cpu_to_be32(control) 137 }; 138 > 139 iowrite32be(dma >> 32, fw_cfg_reg_dma); 140 iowrite32be(dma, fw_cfg_reg_dma + 4); 141 while (be32_to_cpu(d->control) & ~FW_CFG_DMA_CTL_ERROR) 142 yield(); /* FIXME: wait_event? */ 143 144 if (be32_to_cpu(d->control) & FW_CFG_DMA_CTL_ERROR) 145 ret = -EIO; 146 147 dma_unmap_single(dev, dma, sizeof(*d), DMA_BIDIRECTIONAL); 148 149 end: 150 kfree(d); 151 if (dma_addr) 152 dma_unmap_single(dev, dma_addr, length, dir); 153 154 return ret; 155 } 156 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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