[kbuild-all] Re: [linux-next:master 4238/6654] include/linux/dmaengine.h:1576: undefined reference to `dma_request_chan'

On 10/09/2020 14.18, Peter Ujfalusi wrote: > On 10/09/2020 13.46, kernel test robot wrote: >> tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master >> head: 7ce53e3a447bced7b85ed181c4d027e93c062e07 >> commit: 7547dbd3b198f309aaff54e3528898a8a196faff [4238/6654] dmaengine: Mark dma_request_slave_channel() deprecated >> config: arm64-randconfig-r025-20200909 (attached as .config) >> compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 0a5dc7effb191eff740e0e7ae7bd8e1f6bdb3ad9)

>> 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 arm64 cross compiling tool for clang build >> # apt-get install binutils-aarch64-linux-gnu >> git checkout 7547dbd3b198f309aaff54e3528898a8a196faff >> # save the attached .config to linux build tree >> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 > > I'm not sure what is wrong, but can not reproduce it with GCC. I have tried with clang/llvm (10.0.1) without luck to reproduce.

>> If you fix the issue, kindly add following tag as appropriate >> Reported-by: kernel test robot <lkp(a)intel.com&gt; >> >> All errors (new ones prefixed by >>): >> >> aarch64-linux-gnu-ld: warning: -z norelro ignored >> aarch64-linux-gnu-ld: fs/orangefs/orangefs-debugfs.o: in function `orangefs_debug_read': >> fs/orangefs/orangefs-debugfs.c:375: undefined reference to `stpcpy' > > Is this also caused by the blaimed patch?

>> aarch64-linux-gnu-ld: security/apparmor/lsm.o: in function `param_get_mode': >> security/apparmor/lsm.c:1559: undefined reference to `stpcpy' >> aarch64-linux-gnu-ld: security/apparmor/lsm.o: in function `param_get_audit': >> security/apparmor/lsm.c:1530: undefined reference to `stpcpy' >> aarch64-linux-gnu-ld: drivers/tty/tty_io.o: in function `tty_line_name': >> drivers/tty/tty_io.c:1139: undefined reference to `stpcpy' >> aarch64-linux-gnu-ld: drivers/tty/tty_io.c:1139: undefined reference to `stpcpy' >> aarch64-linux-gnu-ld: drivers/tty/tty_io.o:drivers/tty/tty_io.c:1139: more undefined references to `stpcpy' follow >> aarch64-linux-gnu-ld: drivers/tty/serial/fsl_lpuart.o: in function `lpuart_remove': >> drivers/tty/serial/fsl_lpuart.c:2663: undefined reference to `dma_release_channel' >> aarch64-linux-gnu-ld: drivers/tty/serial/fsl_lpuart.c:2666: undefined reference to `dma_release_channel' > > #ifdef CONFIG_DMA_ENGINE > struct dma_chan *dma_request_chan(struct device *dev, const char *name); > #else > static inline struct dma_chan *dma_request_chan(struct device *dev, > const char *name) > { > return ERR_PTR(-ENODEV); > } > #endif > > static inline struct dma_chan * __deprecated > dma_request_slave_channel(struct device *dev, const char *name) > { > struct dma_chan *ch = dma_request_chan(dev, name); > > return IS_ERR(ch) ? NULL : ch; > } > > And in the included config we have: > # CONFIG_DMADEVICES is not set > CONFIG_DMA_ENGINE=y The .config get corrected all the time and the CONFIG_DMA_ENGINE goes away, I can not make it stick.