Hi, On 30 August 2017 at 10:24, kbuild test robot <fengguang.wu@xxxxxxxxx> wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/for-next > head: 60999e2bb4ed42743b81d718521deccdb8888335 > commit: 8b9ec0719834fe66146d138d62ed66cef025c864 [65/74] i2c: Add Spreadtrum I2C controller driver > config: arm64-allmodconfig (attached as .config) > compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 > reproduce: > wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > git checkout 8b9ec0719834fe66146d138d62ed66cef025c864 > # save the attached .config to linux build tree > make.cross ARCH=arm64 > > All errors (new ones prefixed by >>): > > drivers/i2c/busses/i2c-sprd.o: In function `sprd_i2c_remove': >>> i2c-sprd.c:(.text+0x168): undefined reference to `i2c_del_adapter' > drivers/i2c/busses/i2c-sprd.o: In function `sprd_i2c_probe': >>> i2c-sprd.c:(.text+0x1400): undefined reference to `i2c_add_numbered_adapter' I realized Spreadtrum I2C driver can not be build as module, so it should depend on I2C=y. Since Wolfram had applied this patch series, I will send one patch to fix this build error. Thanks. -- Baolin.wang Best Regards
