Hi Shraddha, [auto build test WARNING on v4.4-rc8] [also build test WARNING on next-20160118] [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/Shraddha-Barke/Staging-goldfish-Add-DMA-support-using-dma_alloc_coherent/20160119-010832 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/staging/goldfish/goldfish_nand.c: In function 'nand_setup_cmd_params': >> drivers/staging/goldfish/goldfish_nand.c:303:26: warning: right shift count >= width of type [-Wshift-count-overflow] writel((u32)(dma_handle >> 32), base + NAND_CMD_PARAMS_ADDR_HIGH); ^ vim +303 drivers/staging/goldfish/goldfish_nand.c 287 { 288 void *addr; 289 dma_addr_t dma_handle; 290 unsigned char __iomem *base = nand->base; 291 292 nand->cmd_params = devm_kzalloc(&pdev->dev, 293 sizeof(struct cmd_params), GFP_KERNEL); 294 if (!nand->cmd_params) 295 return -1; 296 297 addr = dma_alloc_coherent(&pdev->dev, sizeof(struct cmd_params), 298 &dma_handle, GFP_KERNEL | GFP_DMA); 299 if (!addr) { 300 dev_err(&pdev->dev, "allocate buffer failed\n"); 301 return -ENOMEM; 302 } > 303 writel((u32)(dma_handle >> 32), base + NAND_CMD_PARAMS_ADDR_HIGH); 304 writel((u32)dma_handle, base + NAND_CMD_PARAMS_ADDR_LOW); 305 return 0; 306 } 307 308 static int goldfish_nand_init_device(struct platform_device *pdev, 309 struct goldfish_nand *nand, int id) 310 { 311 u32 name_len; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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