Hi Miquel, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 95065cb54210eba86bed10cb2118041524d54573 commit: f9681a074422bd5d44cb3bffcd60f8b1612e6f76 [7038/7280] mtd: rawnand: orion: Allow compile testing config: alpha-allmodconfig (attached as .config) compiler: alpha-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 # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=f9681a074422bd5d44cb3bffcd60f8b1612e6f76 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout f9681a074422bd5d44cb3bffcd60f8b1612e6f76 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=alpha If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/mtd/nand/raw/orion_nand.c: In function 'orion_nand_read_buf': >> drivers/mtd/nand/raw/orion_nand.c:79:2: error: implicit declaration of function 'readsl'; did you mean 'readl'? [-Werror=implicit-function-declaration] 79 | readsl(io_base, buf, len/4); | ^~~~~~ | readl cc1: some warnings being treated as errors vim +79 drivers/mtd/nand/raw/orion_nand.c 2a1dba2931dc14a drivers/mtd/nand/orion_nand.c Tzachi Perelstein 2007-10-17 51 7e534323c416216 drivers/mtd/nand/raw/orion_nand.c Boris Brezillon 2018-09-06 52 static void orion_nand_read_buf(struct nand_chip *chip, uint8_t *buf, int len) bfee1a4311702c9 drivers/mtd/nand/orion_nand.c Nicolas Pitre 2009-05-31 53 { 82fc5099744e5f3 drivers/mtd/nand/raw/orion_nand.c Boris Brezillon 2018-09-07 54 void __iomem *io_base = chip->legacy.IO_ADDR_R; d166541e9031daf drivers/mtd/nand/raw/orion_nand.c Boris Brezillon 2018-07-18 55 #if defined(__LINUX_ARM_ARCH__) && __LINUX_ARM_ARCH__ >= 5 bfee1a4311702c9 drivers/mtd/nand/orion_nand.c Nicolas Pitre 2009-05-31 56 uint64_t *buf64; 55bafbc277dcce7 drivers/mtd/nand/orion_nand.c Arnd Bergmann 2017-07-21 57 #endif bfee1a4311702c9 drivers/mtd/nand/orion_nand.c Nicolas Pitre 2009-05-31 58 int i = 0; bfee1a4311702c9 drivers/mtd/nand/orion_nand.c Nicolas Pitre 2009-05-31 59 bfee1a4311702c9 drivers/mtd/nand/orion_nand.c Nicolas Pitre 2009-05-31 60 while (len && (unsigned long)buf & 7) { bfee1a4311702c9 drivers/mtd/nand/orion_nand.c Nicolas Pitre 2009-05-31 61 *buf++ = readb(io_base); bfee1a4311702c9 drivers/mtd/nand/orion_nand.c Nicolas Pitre 2009-05-31 62 len--; bfee1a4311702c9 drivers/mtd/nand/orion_nand.c Nicolas Pitre 2009-05-31 63 } d166541e9031daf drivers/mtd/nand/raw/orion_nand.c Boris Brezillon 2018-07-18 64 #if defined(__LINUX_ARM_ARCH__) && __LINUX_ARM_ARCH__ >= 5 bfee1a4311702c9 drivers/mtd/nand/orion_nand.c Nicolas Pitre 2009-05-31 65 buf64 = (uint64_t *)buf; bfee1a4311702c9 drivers/mtd/nand/orion_nand.c Nicolas Pitre 2009-05-31 66 while (i < len/8) { a88a2b886404b1c drivers/mtd/nand/orion_nand.c Paulius Zaleckas 2010-04-23 67 /* a88a2b886404b1c drivers/mtd/nand/orion_nand.c Paulius Zaleckas 2010-04-23 68 * Since GCC has no proper constraint (PR 43518) a88a2b886404b1c drivers/mtd/nand/orion_nand.c Paulius Zaleckas 2010-04-23 69 * force x variable to r2/r3 registers as ldrd instruction a88a2b886404b1c drivers/mtd/nand/orion_nand.c Paulius Zaleckas 2010-04-23 70 * requires first register to be even. a88a2b886404b1c drivers/mtd/nand/orion_nand.c Paulius Zaleckas 2010-04-23 71 */ a88a2b886404b1c drivers/mtd/nand/orion_nand.c Paulius Zaleckas 2010-04-23 72 register uint64_t x asm ("r2"); a88a2b886404b1c drivers/mtd/nand/orion_nand.c Paulius Zaleckas 2010-04-23 73 94da210af4978b9 drivers/mtd/nand/orion_nand.c Simon Kagstrom 2009-08-20 74 asm volatile ("ldrd\t%0, [%1]" : "=&r" (x) : "r" (io_base)); bfee1a4311702c9 drivers/mtd/nand/orion_nand.c Nicolas Pitre 2009-05-31 75 buf64[i++] = x; bfee1a4311702c9 drivers/mtd/nand/orion_nand.c Nicolas Pitre 2009-05-31 76 } bfee1a4311702c9 drivers/mtd/nand/orion_nand.c Nicolas Pitre 2009-05-31 77 i *= 8; 55bafbc277dcce7 drivers/mtd/nand/orion_nand.c Arnd Bergmann 2017-07-21 78 #else 55bafbc277dcce7 drivers/mtd/nand/orion_nand.c Arnd Bergmann 2017-07-21 @79 readsl(io_base, buf, len/4); 55bafbc277dcce7 drivers/mtd/nand/orion_nand.c Arnd Bergmann 2017-07-21 80 i = len / 4 * 4; 55bafbc277dcce7 drivers/mtd/nand/orion_nand.c Arnd Bergmann 2017-07-21 81 #endif bfee1a4311702c9 drivers/mtd/nand/orion_nand.c Nicolas Pitre 2009-05-31 82 while (i < len) bfee1a4311702c9 drivers/mtd/nand/orion_nand.c Nicolas Pitre 2009-05-31 83 buf[i++] = readb(io_base); bfee1a4311702c9 drivers/mtd/nand/orion_nand.c Nicolas Pitre 2009-05-31 84 } bfee1a4311702c9 drivers/mtd/nand/orion_nand.c Nicolas Pitre 2009-05-31 85 :::::: The code at line 79 was first introduced by commit :::::: 55bafbc277dcce7aab0ba28563075f3b517e6134 mtd: orion-nand: fix build error with ARMv4 :::::: TO: Arnd Bergmann <arnd@xxxxxxxx> :::::: CC: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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