Hi Vignesh, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on spi/for-next] [also build test WARNING on linus/master v5.7-rc7 next-20200526] [cannot apply to mtd/master] [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/Vignesh-Raghavendra/mtd-spi-nor-Move-cadence-qaudspi-to-spi-mem-framework/20200526-174159 base: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next config: xtensa-allyesconfig (attached as .config) compiler: xtensa-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>, old ones prefixed by <<): In file included from include/linux/err.h:5, from include/linux/clk.h:12, from drivers/spi/spi-cadence-quadspi.c:9: include/linux/scatterlist.h: In function 'sg_set_buf': arch/xtensa/include/asm/page.h:193:9: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 193 | ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr) | ^~ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/scatterlist.h:143:2: note: in expansion of macro 'BUG_ON' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~ arch/xtensa/include/asm/page.h:201:32: note: in expansion of macro 'pfn_valid' 201 | #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) | ^~~~~~~~~ include/linux/scatterlist.h:143:10: note: in expansion of macro 'virt_addr_valid' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~~~~~~~~~~ In file included from ./arch/xtensa/include/generated/asm/bug.h:1, from include/linux/bug.h:5, from include/linux/thread_info.h:12, from arch/xtensa/include/asm/current.h:18, from include/linux/mutex.h:14, from include/linux/notifier.h:14, from include/linux/clk.h:14, from drivers/spi/spi-cadence-quadspi.c:9: include/linux/dma-mapping.h: In function 'dma_map_resource': arch/xtensa/include/asm/page.h:193:9: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 193 | ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr) | ^~ include/asm-generic/bug.h:139:27: note: in definition of macro 'WARN_ON_ONCE' 139 | int __ret_warn_once = !!(condition); | ^~~~~~~~~ include/linux/dma-mapping.h:352:19: note: in expansion of macro 'pfn_valid' 352 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr)))) | ^~~~~~~~~ In file included from include/linux/shm.h:6, from include/linux/sched.h:16, from include/linux/ratelimit.h:6, from include/linux/dev_printk.h:16, from include/linux/device.h:15, from include/linux/dma-mapping.h:7, from drivers/spi/spi-cadence-quadspi.c:12: drivers/spi/spi-cadence-quadspi.c: In function 'cqspi_direct_read_execute': arch/xtensa/include/asm/page.h:193:9: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 193 | ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr) | ^~ arch/xtensa/include/asm/page.h:201:32: note: in expansion of macro 'pfn_valid' 201 | #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) | ^~~~~~~~~ >> drivers/spi/spi-cadence-quadspi.c:911:26: note: in expansion of macro 'virt_addr_valid' 911 | if (!cqspi->rx_chan || !virt_addr_valid(buf)) { | ^~~~~~~~~~~~~~~ vim +/virt_addr_valid +911 drivers/spi/spi-cadence-quadspi.c ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 898 d467c948c5d40f drivers/mtd/spi-nor/controllers/cadence-quadspi.c Ramuthevar Vadivel Murugan 2020-05-26 899 static int cqspi_direct_read_execute(struct cqspi_flash_pdata *f_pdata, d467c948c5d40f drivers/mtd/spi-nor/controllers/cadence-quadspi.c Ramuthevar Vadivel Murugan 2020-05-26 900 u_char *buf, loff_t from, size_t len) ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 901 { ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 902 struct cqspi_st *cqspi = f_pdata->cqspi; d467c948c5d40f drivers/mtd/spi-nor/controllers/cadence-quadspi.c Ramuthevar Vadivel Murugan 2020-05-26 903 struct device *dev = &cqspi->pdev->dev; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 904 enum dma_ctrl_flags flags = DMA_CTRL_ACK | DMA_PREP_INTERRUPT; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 905 dma_addr_t dma_src = (dma_addr_t)cqspi->mmap_phys_base + from; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 906 int ret = 0; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 907 struct dma_async_tx_descriptor *tx; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 908 dma_cookie_t cookie; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 909 dma_addr_t dma_dst; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 910 ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 @911 if (!cqspi->rx_chan || !virt_addr_valid(buf)) { ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 912 memcpy_fromio(buf, cqspi->ahb_base + from, len); ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 913 return 0; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 914 } ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 915 d467c948c5d40f drivers/mtd/spi-nor/controllers/cadence-quadspi.c Ramuthevar Vadivel Murugan 2020-05-26 916 dma_dst = dma_map_single(dev, buf, len, DMA_FROM_DEVICE); d467c948c5d40f drivers/mtd/spi-nor/controllers/cadence-quadspi.c Ramuthevar Vadivel Murugan 2020-05-26 917 if (dma_mapping_error(dev, dma_dst)) { d467c948c5d40f drivers/mtd/spi-nor/controllers/cadence-quadspi.c Ramuthevar Vadivel Murugan 2020-05-26 918 dev_err(dev, "dma mapping failed\n"); ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 919 return -ENOMEM; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 920 } ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 921 tx = dmaengine_prep_dma_memcpy(cqspi->rx_chan, dma_dst, dma_src, ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 922 len, flags); ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 923 if (!tx) { d467c948c5d40f drivers/mtd/spi-nor/controllers/cadence-quadspi.c Ramuthevar Vadivel Murugan 2020-05-26 924 dev_err(dev, "device_prep_dma_memcpy error\n"); ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 925 ret = -EIO; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 926 goto err_unmap; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 927 } ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 928 ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 929 tx->callback = cqspi_rx_dma_callback; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 930 tx->callback_param = cqspi; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 931 cookie = tx->tx_submit(tx); ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 932 reinit_completion(&cqspi->rx_dma_complete); ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 933 ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 934 ret = dma_submit_error(cookie); ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 935 if (ret) { d467c948c5d40f drivers/mtd/spi-nor/controllers/cadence-quadspi.c Ramuthevar Vadivel Murugan 2020-05-26 936 dev_err(dev, "dma_submit_error %d\n", cookie); ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 937 ret = -EIO; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 938 goto err_unmap; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 939 } ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 940 ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 941 dma_async_issue_pending(cqspi->rx_chan); 3938c0d4cf6047 drivers/mtd/spi-nor/cadence-quadspi.c Nicholas Mc Guire 2018-07-21 942 if (!wait_for_completion_timeout(&cqspi->rx_dma_complete, 3938c0d4cf6047 drivers/mtd/spi-nor/cadence-quadspi.c Nicholas Mc Guire 2018-07-21 943 msecs_to_jiffies(len))) { ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 944 dmaengine_terminate_sync(cqspi->rx_chan); d467c948c5d40f drivers/mtd/spi-nor/controllers/cadence-quadspi.c Ramuthevar Vadivel Murugan 2020-05-26 945 dev_err(dev, "DMA wait_for_completion_timeout\n"); ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 946 ret = -ETIMEDOUT; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 947 goto err_unmap; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 948 } ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 949 ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 950 err_unmap: d467c948c5d40f drivers/mtd/spi-nor/controllers/cadence-quadspi.c Ramuthevar Vadivel Murugan 2020-05-26 951 dma_unmap_single(dev, dma_dst, len, DMA_FROM_DEVICE); ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 952 91d7b67000c6e9 drivers/mtd/spi-nor/cadence-quadspi.c Christophe JAILLET 2018-10-16 953 return ret; ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 954 } ffa639e069fb55 drivers/mtd/spi-nor/cadence-quadspi.c Vignesh R 2018-04-10 955 :::::: The code at line 911 was first introduced by commit :::::: ffa639e069fb55a150a2f14af6762b2c429e6d50 mtd: spi-nor: cadence-quadspi: Add DMA support for direct mode reads :::::: TO: Vignesh R <vigneshr@xxxxxx> :::::: CC: Boris Brezillon <boris.brezillon@xxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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