We already have a dependency on BCMA_NFLASH, which in turn depends on BCMA, but since BCMA is a tristate option and BCMA_NFLASH is bool, we can run into an invalid configuration with MTD_NAND_BCM47XXNFLASH=y and BCMA=m: drivers/mtd/nand/raw/bcm47xxnflash/ops_bcm4706.o: In function `bcm47xxnflash_ops_bcm4706_init': ops_bcm4706.c:(.text+0x790): undefined reference to `bcma_chipco_pll_read' Adding the dependency here forces MTD_NAND_BCM47XXNFLASH to only be configured =m here so it can link against the BCMA driver. Signed-off-by: Arnd Bergmann <arnd at arndb.de> --- drivers/mtd/nand/raw/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mtd/nand/raw/Kconfig b/drivers/mtd/nand/raw/Kconfig index 230311fa2cc0..b457f92d55d4 100644 --- a/drivers/mtd/nand/raw/Kconfig +++ b/drivers/mtd/nand/raw/Kconfig @@ -364,6 +364,7 @@ config MTD_NAND_BRCMNAND config MTD_NAND_BCM47XXNFLASH tristate "Support for NAND flash on BCM4706 BCMA bus" depends on BCMA_NFLASH + depends on BCMA help BCMA bus can have various flash memories attached, they are registered by bcma as platform devices. This enables driver for -- 2.9.0