Hi Chuanhong, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on arm-soc/for-next] [cannot apply to v5.4-rc7 next-20191108] [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/Chuanhong-Guo/mtd-mtk-quadspi-add-support-for-DMA-reading/20191112-145019 base: https://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc.git for-next config: x86_64-randconfig-a004-201945 (attached as .config) compiler: gcc-7 (Debian 7.4.0-14) 7.4.0 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 warnings (new ones prefixed by >>): drivers/mtd/spi-nor/mtk-quadspi.c: In function 'mtk_nor_read_dma_bounce': drivers/mtd/spi-nor/mtk-quadspi.c:349:22: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] mem_unaligned_len = (u32)buf % MTK_NOR_DMA_ALIGN; ^ In file included from include/linux/err.h:5:0, from include/linux/clk.h:12, from drivers/mtd/spi-nor/mtk-quadspi.c:7: drivers/mtd/spi-nor/mtk-quadspi.c: In function 'mtk_nor_read': drivers/mtd/spi-nor/mtk-quadspi.c:369:6: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] (u32)buffer % MTK_NOR_DMA_ALIGN || from % MTK_NOR_DMA_ALIGN) ^ include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ^~~~ >> drivers/mtd/spi-nor/mtk-quadspi.c:368:2: note: in expansion of macro 'if' if (object_is_on_stack(buffer) || !virt_addr_valid(buffer) || ^~ drivers/mtd/spi-nor/mtk-quadspi.c:369:6: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] (u32)buffer % MTK_NOR_DMA_ALIGN || from % MTK_NOR_DMA_ALIGN) ^ include/linux/compiler.h:58:61: note: in definition of macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ^~~~ >> drivers/mtd/spi-nor/mtk-quadspi.c:368:2: note: in expansion of macro 'if' if (object_is_on_stack(buffer) || !virt_addr_valid(buffer) || ^~ drivers/mtd/spi-nor/mtk-quadspi.c:369:6: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] (u32)buffer % MTK_NOR_DMA_ALIGN || from % MTK_NOR_DMA_ALIGN) ^ include/linux/compiler.h:69:3: note: in definition of macro '__trace_if_value' (cond) ? \ ^~~~ include/linux/compiler.h:56:28: note: in expansion of macro '__trace_if_var' #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) ^~~~~~~~~~~~~~ >> drivers/mtd/spi-nor/mtk-quadspi.c:368:2: note: in expansion of macro 'if' if (object_is_on_stack(buffer) || !virt_addr_valid(buffer) || ^~ vim +/if +368 drivers/mtd/spi-nor/mtk-quadspi.c 359 360 static ssize_t mtk_nor_read(struct spi_nor *nor, loff_t from, size_t length, 361 u_char *buffer) 362 { 363 struct mtk_nor *mtk_nor = nor->priv; 364 365 if (length < MTK_NOR_DMA_ALIGN) 366 return mtk_nor_read_pio(mtk_nor, from, length, buffer); 367 > 368 if (object_is_on_stack(buffer) || !virt_addr_valid(buffer) || 369 (u32)buffer % MTK_NOR_DMA_ALIGN || from % MTK_NOR_DMA_ALIGN) 370 return mtk_nor_read_dma_bounce(mtk_nor, from, length, buffer); 371 372 return mtk_nor_read_dma(mtk_nor, from, length, buffer); 373 } 374 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx Intel Corporation
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