Hi yalin, [auto build test WARNING on: v4.3-rc7] [also build test WARNING on: next-20151105]
url: https://github.com/0day-ci/linux/commits/yalin-wang/kconfig-fix-missing-symbol-error/20151105-204811 config: mips-allmodconfig (attached as .config) 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=mips All warnings (new ones prefixed by >>): In file included from arch/mips/include/asm/div64.h:12:0, from include/linux/kernel.h:136, from include/asm-generic/bug.h:13, from arch/mips/include/asm/bug.h:41, from include/linux/bug.h:4, from include/linux/io.h:23, from drivers/staging/goldfish/goldfish_nand.c:19: drivers/staging/goldfish/goldfish_nand.c: In function 'goldfish_nand_erase': include/asm-generic/div64.h:43:28: warning: comparison of distinct pointer types lacks a cast (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \ ^ >> drivers/staging/goldfish/goldfish_nand.c:106:8: note: in expansion of macro >> 'do_div' rem = do_div(ofs, mtd->writesize); ^ drivers/staging/goldfish/goldfish_nand.c: In function 'goldfish_nand_read_oob': include/asm-generic/div64.h:43:28: warning: comparison of distinct pointer types lacks a cast (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \ ^ drivers/staging/goldfish/goldfish_nand.c:144:8: note: in expansion of macro 'do_div' rem = do_div(ofs, mtd->writesize); ^ drivers/staging/goldfish/goldfish_nand.c: In function 'goldfish_nand_write_oob': include/asm-generic/div64.h:43:28: warning: comparison of distinct pointer types lacks a cast (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \ ^ drivers/staging/goldfish/goldfish_nand.c:176:8: note: in expansion of macro 'do_div' rem = do_div(ofs, mtd->writesize); ^ drivers/staging/goldfish/goldfish_nand.c: In function 'goldfish_nand_read': include/asm-generic/div64.h:43:28: warning: comparison of distinct pointer types lacks a cast (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \ ^ drivers/staging/goldfish/goldfish_nand.c:204:8: note: in expansion of macro 'do_div' rem = do_div(from, mtd->writesize); ^ drivers/staging/goldfish/goldfish_nand.c: In function 'goldfish_nand_write': include/asm-generic/div64.h:43:28: warning: comparison of distinct pointer types lacks a cast (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \ ^ drivers/staging/goldfish/goldfish_nand.c:226:8: note: in expansion of macro 'do_div' rem = do_div(to, mtd->writesize); ^ drivers/staging/goldfish/goldfish_nand.c: In function 'goldfish_nand_block_isbad': include/asm-generic/div64.h:43:28: warning: comparison of distinct pointer types lacks a cast (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \ ^ drivers/staging/goldfish/goldfish_nand.c:247:8: note: in expansion of macro 'do_div' rem = do_div(ofs, mtd->erasesize); ^ drivers/staging/goldfish/goldfish_nand.c: In function 'goldfish_nand_block_markbad': include/asm-generic/div64.h:43:28: warning: comparison of distinct pointer types lacks a cast (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \ ^ drivers/staging/goldfish/goldfish_nand.c:268:8: note: in expansion of macro 'do_div' rem = do_div(ofs, mtd->erasesize); ^ vim +/do_div +106 drivers/staging/goldfish/goldfish_nand.c 8e404fff Arve Hjønnevåg 2013-01-24 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 8e404fff Arve Hjønnevåg 2013-01-24 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 8e404fff Arve Hjønnevåg 2013-01-24 15 * GNU General Public License for more details. 8e404fff Arve Hjønnevåg 2013-01-24 16 * 8e404fff Arve Hjønnevåg 2013-01-24 17 */ 8e404fff Arve Hjønnevåg 2013-01-24 18 8e404fff Arve Hjønnevåg 2013-01-24 @19 #include <linux/io.h> 8e404fff Arve Hjønnevåg 2013-01-24 20 #include <linux/device.h> 8e404fff Arve Hjønnevåg 2013-01-24 21 #include <linux/module.h> 8e404fff Arve Hjønnevåg 2013-01-24 22 #include <linux/slab.h> 8e404fff Arve Hjønnevåg 2013-01-24 23 #include <linux/ioport.h> 8e404fff Arve Hjønnevåg 2013-01-24 24 #include <linux/vmalloc.h> 8e404fff Arve Hjønnevåg 2013-01-24 25 #include <linux/mtd/mtd.h> 8e404fff Arve Hjønnevåg 2013-01-24 26 #include <linux/platform_device.h> 67c20cfb Kristina Martšenko 2014-03-25 27 #include <linux/mutex.h> f6279717 Alan 2014-05-12 28 #include <linux/goldfish.h> 8e404fff Arve Hjønnevåg 2013-01-24 29 #include <asm/div64.h> 8e404fff Arve Hjønnevåg 2013-01-24 30 8e404fff Arve Hjønnevåg 2013-01-24 31 #include "goldfish_nand_reg.h" 8e404fff Arve Hjønnevåg 2013-01-24 32 8e404fff Arve Hjønnevåg 2013-01-24 33 struct goldfish_nand { 2c507415 Loic Pefferkorn 2014-09-03 34 /* lock protects access to the device registers */ 67c20cfb Kristina Martšenko 2014-03-25 35 struct mutex lock; 8e404fff Arve Hjønnevåg 2013-01-24 36 unsigned char __iomem *base; 8e404fff Arve Hjønnevåg 2013-01-24 37 struct cmd_params *cmd_params; 8e404fff Arve Hjønnevåg 2013-01-24 38 size_t mtd_count; 8e404fff Arve Hjønnevåg 2013-01-24 39 struct mtd_info mtd[0]; 8e404fff Arve Hjønnevåg 2013-01-24 40 }; 8e404fff Arve Hjønnevåg 2013-01-24 41 8e404fff Arve Hjønnevåg 2013-01-24 42 static u32 goldfish_nand_cmd_with_params(struct mtd_info *mtd, 8e404fff Arve Hjønnevåg 2013-01-24 43 enum nand_cmd cmd, u64 addr, u32 len, 8e404fff Arve Hjønnevåg 2013-01-24 44 void *ptr, u32 *rv) 8e404fff Arve Hjønnevåg 2013-01-24 45 { 8e404fff Arve Hjønnevåg 2013-01-24 46 u32 cmdp; 8e404fff Arve Hjønnevåg 2013-01-24 47 struct goldfish_nand *nand = mtd->priv; 8e404fff Arve Hjønnevåg 2013-01-24 48 struct cmd_params *cps = nand->cmd_params; 8e404fff Arve Hjønnevåg 2013-01-24 49 unsigned char __iomem *base = nand->base; 8e404fff Arve Hjønnevåg 2013-01-24 50 8e404fff Arve Hjønnevåg 2013-01-24 51 if (cps == NULL) 8e404fff Arve Hjønnevåg 2013-01-24 52 return -1; 8e404fff Arve Hjønnevåg 2013-01-24 53 8e404fff Arve Hjønnevåg 2013-01-24 54 switch (cmd) { 8e404fff Arve Hjønnevåg 2013-01-24 55 case NAND_CMD_ERASE: 8e404fff Arve Hjønnevåg 2013-01-24 56 cmdp = NAND_CMD_ERASE_WITH_PARAMS; 8e404fff Arve Hjønnevåg 2013-01-24 57 break; 8e404fff Arve Hjønnevåg 2013-01-24 58 case NAND_CMD_READ: 8e404fff Arve Hjønnevåg 2013-01-24 59 cmdp = NAND_CMD_READ_WITH_PARAMS; 8e404fff Arve Hjønnevåg 2013-01-24 60 break; 8e404fff Arve Hjønnevåg 2013-01-24 61 case NAND_CMD_WRITE: 8e404fff Arve Hjønnevåg 2013-01-24 62 cmdp = NAND_CMD_WRITE_WITH_PARAMS; 8e404fff Arve Hjønnevåg 2013-01-24 63 break; 8e404fff Arve Hjønnevåg 2013-01-24 64 default: 8e404fff Arve Hjønnevåg 2013-01-24 65 return -1; 8e404fff Arve Hjønnevåg 2013-01-24 66 } 8e404fff Arve Hjønnevåg 2013-01-24 67 cps->dev = mtd - nand->mtd; 8e404fff Arve Hjønnevåg 2013-01-24 68 cps->addr_high = (u32)(addr >> 32); 8e404fff Arve Hjønnevåg 2013-01-24 69 cps->addr_low = (u32)addr; 8e404fff Arve Hjønnevåg 2013-01-24 70 cps->transfer_size = len; 7f09d4a0 Jun Tian 2014-04-28 71 cps->data = (unsigned long)ptr; 8e404fff Arve Hjønnevåg 2013-01-24 72 writel(cmdp, base + NAND_COMMAND); 8e404fff Arve Hjønnevåg 2013-01-24 73 *rv = cps->result; 8e404fff Arve Hjønnevåg 2013-01-24 74 return 0; 8e404fff Arve Hjønnevåg 2013-01-24 75 } 8e404fff Arve Hjønnevåg 2013-01-24 76 8e404fff Arve Hjønnevåg 2013-01-24 77 static u32 goldfish_nand_cmd(struct mtd_info *mtd, enum nand_cmd cmd, 8e404fff Arve Hjønnevåg 2013-01-24 78 u64 addr, u32 len, void *ptr) 8e404fff Arve Hjønnevåg 2013-01-24 79 { 8e404fff Arve Hjønnevåg 2013-01-24 80 struct goldfish_nand *nand = mtd->priv; 8e404fff Arve Hjønnevåg 2013-01-24 81 u32 rv; 8e404fff Arve Hjønnevåg 2013-01-24 82 unsigned char __iomem *base = nand->base; 8e404fff Arve Hjønnevåg 2013-01-24 83 67c20cfb Kristina Martšenko 2014-03-25 84 mutex_lock(&nand->lock); 8e404fff Arve Hjønnevåg 2013-01-24 85 if (goldfish_nand_cmd_with_params(mtd, cmd, addr, len, ptr, &rv)) { 8e404fff Arve Hjønnevåg 2013-01-24 86 writel(mtd - nand->mtd, base + NAND_DEV); 8e404fff Arve Hjønnevåg 2013-01-24 87 writel((u32)(addr >> 32), base + NAND_ADDR_HIGH); 8e404fff Arve Hjønnevåg 2013-01-24 88 writel((u32)addr, base + NAND_ADDR_LOW); 8e404fff Arve Hjønnevåg 2013-01-24 89 writel(len, base + NAND_TRANSFER_SIZE); 07d783fd Peter Senna Tschudin 2015-05-19 90 gf_write_ptr(ptr, base + NAND_DATA, base + NAND_DATA_HIGH); 8e404fff Arve Hjønnevåg 2013-01-24 91 writel(cmd, base + NAND_COMMAND); 8e404fff Arve Hjønnevåg 2013-01-24 92 rv = readl(base + NAND_RESULT); 8e404fff Arve Hjønnevåg 2013-01-24 93 } 67c20cfb Kristina Martšenko 2014-03-25 94 mutex_unlock(&nand->lock); 8e404fff Arve Hjønnevåg 2013-01-24 95 return rv; 8e404fff Arve Hjønnevåg 2013-01-24 96 } 8e404fff Arve Hjønnevåg 2013-01-24 97 8e404fff Arve Hjønnevåg 2013-01-24 98 static int goldfish_nand_erase(struct mtd_info *mtd, struct erase_info *instr) 8e404fff Arve Hjønnevåg 2013-01-24 99 { 8e404fff Arve Hjønnevåg 2013-01-24 100 loff_t ofs = instr->addr; 8e404fff Arve Hjønnevåg 2013-01-24 101 u32 len = instr->len; 8e404fff Arve Hjønnevåg 2013-01-24 102 u32 rem; 8e404fff Arve Hjønnevåg 2013-01-24 103 8e404fff Arve Hjønnevåg 2013-01-24 104 if (ofs + len > mtd->size) 8e404fff Arve Hjønnevåg 2013-01-24 105 goto invalid_arg; 8e404fff Arve Hjønnevåg 2013-01-24 @106 rem = do_div(ofs, mtd->writesize); 8e404fff Arve Hjønnevåg 2013-01-24 107 if (rem) 8e404fff Arve Hjønnevåg 2013-01-24 108 goto invalid_arg; 8e404fff Arve Hjønnevåg 2013-01-24 109 ofs *= (mtd->writesize + mtd->oobsize); :::::: The code at line 106 was first introduced by commit :::::: 8e404fffeac7d3985b193edbf860d9d73dec5b6a goldfish: NAND flash driver :::::: TO: Arve Hjønnevåg <a...@google.com> :::::: CC: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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