From: Arnd Bergmann <arnd@xxxxxxxx> Kbuild does not support having a source file compiled multiple times and linked into distinct modules, or built-in and modular at the same time. For fs-edma, there are two common components that are linked into the fsl-edma.ko for Arm and PowerPC, plus the mcf-edma.ko module on Coldfire. This violates the rule for compile-testing: scripts/Makefile.build:236: drivers/dma/Makefile: fsl-edma-common.o is added to multiple modules: fsl-edma mcf-edma scripts/Makefile.build:236: drivers/dma/Makefile: fsl-edma-trace.o is added to multiple modules: fsl-edma mcf-edma I tried splitting out the common parts into a separate modules, but that adds back the complexity that a cleanup patch removed, and it gets harder with the addition of the tracepoints. As a minimal workaround, address it at the Kconfig level, by disallowing the broken configurations. Link: https://lore.kernel.org/lkml/20240110232255.1099757-1-arnd@xxxxxxxxxx/ Fixes: 66aac8ea0a6c ("dmaengine: fsl-edma: clean up EXPORT_SYMBOL_GPL in fsl-edma-common.c") Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- drivers/dma/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig index 965fa49668ff..b3873d01a2ab 100644 --- a/drivers/dma/Kconfig +++ b/drivers/dma/Kconfig @@ -394,7 +394,7 @@ config LS2X_APB_DMA config MCF_EDMA tristate "Freescale eDMA engine support, ColdFire mcf5441x SoCs" - depends on M5441x || COMPILE_TEST + depends on M5441x || (COMPILE_TEST && FSL_EDMA=n) select DMA_ENGINE select DMA_VIRTUAL_CHANNELS help -- 2.39.2
