On Thu, Apr 02, 2015 at 09:33:03AM +0100, Build bot for Mark Brown wrote:
Failed defconfigs: arm64-allmodconfig
For the past few days -next has been failing to build an arm64 allmodconfig due to:
| drivers/built-in.o: In function `tegra124_132_clock_init_post': | :(.init.text+0x285d8): undefined reference to `tegra_emc_init'
This is triggered by d035fdfa27ac124bc8 (arm64: Add Tegra132 support) which enables ARCH_TEGRA and ARCH_TEGRA_132_SOC for arm64 which in turn causes clk-tegra124 to be built on arm64. That driver relies on TEGRA124_EMC but that depends on ARCH_TEGRA_124_SOC which is 32 bit only.
We either need the EMC driver for Tegra132, a stub or some ifdefs.
It also looks like there's an issue if the memory controller driver is not enabled (which looks to be something that can be controlled by the user) but I've not checked properly.