tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-next head: a3081893cab48df3facff8144d9506610213241a commit: 3489187204eb75e5635d8836babfd0a18be613f4 [83/86] serial: stm32: adding dma support config: sparc-allmodconfig (attached as .config) compiler: sparc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 3489187204eb75e5635d8836babfd0a18be613f4 # save the attached .config to linux build tree make.cross ARCH=sparc All warnings (new ones prefixed by >>): drivers/tty/serial/stm32-usart.c: In function 'stm32_of_dma_rx_probe': >> drivers/tty/serial/stm32-usart.c:740:20: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] config.src_addr = (dma_addr_t)port->membase + ofs->rdr; ^ drivers/tty/serial/stm32-usart.c: In function 'stm32_of_dma_tx_probe': drivers/tty/serial/stm32-usart.c:812:20: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] config.dst_addr = (dma_addr_t)port->membase + ofs->tdr; ^ vim +740 drivers/tty/serial/stm32-usart.c 724 /* Request DMA RX channel */ 725 stm32port->rx_ch = dma_request_slave_channel(dev, "rx"); 726 if (!stm32port->rx_ch) { 727 dev_info(dev, "rx dma alloc failed\n"); 728 return -ENODEV; 729 } 730 stm32port->rx_buf = dma_alloc_coherent(&pdev->dev, RX_BUF_L, 731 &stm32port->rx_dma_buf, 732 GFP_KERNEL); 733 if (!stm32port->rx_buf) { 734 ret = -ENOMEM; 735 goto alloc_err; 736 } 737 738 /* Configure DMA channel */ 739 memset(&config, 0, sizeof(config)); > 740 config.src_addr = (dma_addr_t)port->membase + ofs->rdr; 741 config.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE; 742 743 ret = dmaengine_slave_config(stm32port->rx_ch, &config); 744 if (ret < 0) { 745 dev_err(dev, "rx dma channel config failed\n"); 746 ret = -ENODEV; 747 goto config_err; 748 } --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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