11.05.2021 16:58, kernel test robot пишет: > Hi Dmitry, > > I love your patch! Perhaps something to improve: > > [auto build test WARNING on tegra/for-next] > [also build test WARNING on v5.13-rc1 next-20210511] > [If your patch is applied to the wrong git tree, kindly drop us a note. > And when submitting patch, we suggest to use '--base' as documented in > https://git-scm.com/docs/git-format-patch] > > url: https://github.com/0day-ci/linux/commits/Dmitry-Osipenko/Enable-compile-testing-for-Tegra-memory-drivers/20210511-053910 > base: https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux.git for-next > config: powerpc-randconfig-r032-20210511 (attached as .config) > compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project a0fed635fe1701470062495a6ffee1c608f3f1bc) > 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 > # install powerpc cross compiling tool for clang build > # apt-get install binutils-powerpc-linux-gnu > # https://github.com/0day-ci/linux/commit/ecd67b1d49eb33c9821130a2b3b896bab395118d > git remote add linux-review https://github.com/0day-ci/linux > git fetch --no-tags linux-review Dmitry-Osipenko/Enable-compile-testing-for-Tegra-memory-drivers/20210511-053910 > git checkout ecd67b1d49eb33c9821130a2b3b896bab395118d > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=powerpc > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > All warnings (new ones prefixed by >>): > > __do_insb > ^ > arch/powerpc/include/asm/io.h:556:56: note: expanded from macro '__do_insb' > #define __do_insb(p, b, n) readsb((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) > ~~~~~~~~~~~~~~~~~~~~~^ > In file included from drivers/memory/tegra/tegra30-emc.c:18: > In file included from include/linux/interrupt.h:11: > In file included from include/linux/hardirq.h:10: > In file included from arch/powerpc/include/asm/hardirq.h:6: > In file included from include/linux/irq.h:20: > In file included from include/linux/io.h:13: > In file included from arch/powerpc/include/asm/io.h:619: > arch/powerpc/include/asm/io-defs.h:45:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c), > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' > __do_##name al; \ > ^~~~~~~~~~~~~~ > <scratch space>:211:1: note: expanded from here > __do_insw > ^ > arch/powerpc/include/asm/io.h:557:56: note: expanded from macro '__do_insw' > #define __do_insw(p, b, n) readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) > ~~~~~~~~~~~~~~~~~~~~~^ > In file included from drivers/memory/tegra/tegra30-emc.c:18: > In file included from include/linux/interrupt.h:11: > In file included from include/linux/hardirq.h:10: > In file included from arch/powerpc/include/asm/hardirq.h:6: > In file included from include/linux/irq.h:20: > In file included from include/linux/io.h:13: > In file included from arch/powerpc/include/asm/io.h:619: > arch/powerpc/include/asm/io-defs.h:47:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c), > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' > __do_##name al; \ > ^~~~~~~~~~~~~~ > <scratch space>:213:1: note: expanded from here > __do_insl > ^ > arch/powerpc/include/asm/io.h:558:56: note: expanded from macro '__do_insl' > #define __do_insl(p, b, n) readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) > ~~~~~~~~~~~~~~~~~~~~~^ > In file included from drivers/memory/tegra/tegra30-emc.c:18: > In file included from include/linux/interrupt.h:11: > In file included from include/linux/hardirq.h:10: > In file included from arch/powerpc/include/asm/hardirq.h:6: > In file included from include/linux/irq.h:20: > In file included from include/linux/io.h:13: > In file included from arch/powerpc/include/asm/io.h:619: > arch/powerpc/include/asm/io-defs.h:49:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c), > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' > __do_##name al; \ > ^~~~~~~~~~~~~~ > <scratch space>:215:1: note: expanded from here > __do_outsb > ^ > arch/powerpc/include/asm/io.h:559:58: note: expanded from macro '__do_outsb' > #define __do_outsb(p, b, n) writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) > ~~~~~~~~~~~~~~~~~~~~~^ > In file included from drivers/memory/tegra/tegra30-emc.c:18: > In file included from include/linux/interrupt.h:11: > In file included from include/linux/hardirq.h:10: > In file included from arch/powerpc/include/asm/hardirq.h:6: > In file included from include/linux/irq.h:20: > In file included from include/linux/io.h:13: > In file included from arch/powerpc/include/asm/io.h:619: > arch/powerpc/include/asm/io-defs.h:51:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c), > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' > __do_##name al; \ > ^~~~~~~~~~~~~~ > <scratch space>:217:1: note: expanded from here > __do_outsw > ^ > arch/powerpc/include/asm/io.h:560:58: note: expanded from macro '__do_outsw' > #define __do_outsw(p, b, n) writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) > ~~~~~~~~~~~~~~~~~~~~~^ > In file included from drivers/memory/tegra/tegra30-emc.c:18: > In file included from include/linux/interrupt.h:11: > In file included from include/linux/hardirq.h:10: > In file included from arch/powerpc/include/asm/hardirq.h:6: > In file included from include/linux/irq.h:20: > In file included from include/linux/io.h:13: > In file included from arch/powerpc/include/asm/io.h:619: > arch/powerpc/include/asm/io-defs.h:53:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c), > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' > __do_##name al; \ > ^~~~~~~~~~~~~~ > <scratch space>:219:1: note: expanded from here > __do_outsl > ^ > arch/powerpc/include/asm/io.h:561:58: note: expanded from macro '__do_outsl' > #define __do_outsl(p, b, n) writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) > ~~~~~~~~~~~~~~~~~~~~~^ >>> drivers/memory/tegra/tegra30-emc.c:757:18: warning: implicit conversion from 'unsigned long' to 'u32' (aka 'unsigned int') changes value from 18446744071562067985 to 2147483665 [-Wconstant-conversion] > writel_relaxed(EMC_ZQ_CAL_LONG_CMD_DEV0, > ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/memory/tegra/tegra30-emc.c:161:36: note: expanded from macro 'EMC_ZQ_CAL_LONG_CMD_DEV0' > (DRAM_DEV_SEL_0 | EMC_ZQ_CAL_LONG | EMC_ZQ_CAL_CMD) > ^ > arch/powerpc/include/asm/io.h:679:40: note: expanded from macro 'writel_relaxed' > #define writel_relaxed(v, addr) writel(v, addr) > ~~~~~~ ^ > 13 warnings generated. > -- > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' > __do_##name al; \ > ^~~~~~~~~~~~~~ > <scratch space>:203:1: note: expanded from here > __do_outl > ^ > arch/powerpc/include/asm/io.h:537:62: note: expanded from macro '__do_outl' > #define __do_outl(val, port) writel(val,(PCI_IO_ADDR)_IO_BASE+port); > ~~~~~~~~~~~~~~~~~~~~~^ > In file included from drivers/memory/tegra/tegra124-emc.c:16: > In file included from include/linux/io.h:13: > In file included from arch/powerpc/include/asm/io.h:619: > arch/powerpc/include/asm/io-defs.h:43:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > DEF_PCI_AC_NORET(insb, (unsigned long p, void *b, unsigned long c), > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' > __do_##name al; \ > ^~~~~~~~~~~~~~ > <scratch space>:217:1: note: expanded from here > __do_insb > ^ > arch/powerpc/include/asm/io.h:556:56: note: expanded from macro '__do_insb' > #define __do_insb(p, b, n) readsb((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) > ~~~~~~~~~~~~~~~~~~~~~^ > In file included from drivers/memory/tegra/tegra124-emc.c:16: > In file included from include/linux/io.h:13: > In file included from arch/powerpc/include/asm/io.h:619: > arch/powerpc/include/asm/io-defs.h:45:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c), > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' > __do_##name al; \ > ^~~~~~~~~~~~~~ > <scratch space>:219:1: note: expanded from here > __do_insw > ^ > arch/powerpc/include/asm/io.h:557:56: note: expanded from macro '__do_insw' > #define __do_insw(p, b, n) readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) > ~~~~~~~~~~~~~~~~~~~~~^ > In file included from drivers/memory/tegra/tegra124-emc.c:16: > In file included from include/linux/io.h:13: > In file included from arch/powerpc/include/asm/io.h:619: > arch/powerpc/include/asm/io-defs.h:47:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c), > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' > __do_##name al; \ > ^~~~~~~~~~~~~~ > <scratch space>:221:1: note: expanded from here > __do_insl > ^ > arch/powerpc/include/asm/io.h:558:56: note: expanded from macro '__do_insl' > #define __do_insl(p, b, n) readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) > ~~~~~~~~~~~~~~~~~~~~~^ > In file included from drivers/memory/tegra/tegra124-emc.c:16: > In file included from include/linux/io.h:13: > In file included from arch/powerpc/include/asm/io.h:619: > arch/powerpc/include/asm/io-defs.h:49:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c), > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' > __do_##name al; \ > ^~~~~~~~~~~~~~ > <scratch space>:223:1: note: expanded from here > __do_outsb > ^ > arch/powerpc/include/asm/io.h:559:58: note: expanded from macro '__do_outsb' > #define __do_outsb(p, b, n) writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) > ~~~~~~~~~~~~~~~~~~~~~^ > In file included from drivers/memory/tegra/tegra124-emc.c:16: > In file included from include/linux/io.h:13: > In file included from arch/powerpc/include/asm/io.h:619: > arch/powerpc/include/asm/io-defs.h:51:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c), > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' > __do_##name al; \ > ^~~~~~~~~~~~~~ > <scratch space>:225:1: note: expanded from here > __do_outsw > ^ > arch/powerpc/include/asm/io.h:560:58: note: expanded from macro '__do_outsw' > #define __do_outsw(p, b, n) writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) > ~~~~~~~~~~~~~~~~~~~~~^ > In file included from drivers/memory/tegra/tegra124-emc.c:16: > In file included from include/linux/io.h:13: > In file included from arch/powerpc/include/asm/io.h:619: > arch/powerpc/include/asm/io-defs.h:53:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c), > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' > __do_##name al; \ > ^~~~~~~~~~~~~~ > <scratch space>:227:1: note: expanded from here > __do_outsl > ^ > arch/powerpc/include/asm/io.h:561:58: note: expanded from macro '__do_outsl' > #define __do_outsl(p, b, n) writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) > ~~~~~~~~~~~~~~~~~~~~~^ >>> drivers/memory/tegra/tegra124-emc.c:802:26: warning: implicit conversion from 'unsigned long' to 'u32' (aka 'unsigned int') changes value from 18446744071562067985 to 2147483665 [-Wconstant-conversion] > emc_ccfifo_writel(emc, EMC_ZQ_CAL_LONG_CMD_DEV0, EMC_ZQ_CAL); > ~~~~~~~~~~~~~~~~~ ^~~~~~~~~~~~~~~~~~~~~~~~ > drivers/memory/tegra/tegra124-emc.c:154:36: note: expanded from macro 'EMC_ZQ_CAL_LONG_CMD_DEV0' > (DRAM_DEV_SEL_0 | EMC_ZQ_CAL_LONG | EMC_ZQ_CAL_CMD) > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~ > 13 warnings generated. This doesn't look like a useful warning from clang, it should see that the constant value itself isn't truncated, hence it should be a problem of clang. Do you think it's okay to ignore this nonsense?
