Hi Joshua, [auto build test WARNING on linus/master] [also build test WARNING on v4.10-rc4 next-20170120] [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/Joshua-Clayton/Altera-Cyclone-Passive-Serial-SPI-FPGA-Manager/20170120-172349 config: alpha-allyesconfig (attached as .config) compiler: alpha-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 # save the attached .config to linux build tree make.cross ARCH=alpha All warnings (new ones prefixed by >>): drivers/fpga/cyclone-ps-spi.c: In function 'rev_buf': drivers/fpga/cyclone-ps-spi.c:86:13: warning: comparison of distinct pointer types lacks a cast while (buf < fw_end) { ^ In file included from include/linux/delay.h:10:0, from drivers/fpga/cyclone-ps-spi.c:17: drivers/fpga/cyclone-ps-spi.c: In function 'cyclonespi_write': include/linux/kernel.h:753:16: warning: comparison of distinct pointer types lacks a cast (void) (&min1 == &min2); \ ^ include/linux/kernel.h:756:2: note: in expansion of macro '__min' __min(typeof(x), typeof(y), \ ^~~~~ drivers/fpga/cyclone-ps-spi.c:101:19: note: in expansion of macro 'min' size_t stride = min(fw_data_end - fw_data, SZ_4K); ^~~ >> drivers/fpga/cyclone-ps-spi.c:103:11: warning: passing argument 1 of 'rev_buf' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] rev_buf(fw_data, stride); ^~~~~~~ drivers/fpga/cyclone-ps-spi.c:81:13: note: expected 'char *' but argument is of type 'const char *' static void rev_buf(char *buf, size_t len) ^~~~~~~ vim +103 drivers/fpga/cyclone-ps-spi.c 95 struct cyclonespi_conf *conf = (struct cyclonespi_conf *)mgr->priv; 96 const char *fw_data = buf; 97 const char *fw_data_end = fw_data + count; 98 99 while (fw_data < fw_data_end) { 100 int ret; > 101 size_t stride = min(fw_data_end - fw_data, SZ_4K); 102 > 103 rev_buf(fw_data, stride); 104 ret = spi_write(conf->spi, fw_data, stride); 105 if (ret) { 106 dev_err(&mgr->dev, "spi error in firmware write: %d\n", --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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