udev no longer creates device nodes under /dev and it has to be managed by the kernel devtmpfs filesystem.
This means that a kernel built with the current config will not boot on a system with a recent udev:
mount: mounting udev on /dev failed: No such device W: devtmpfs not available, falling back to tmpfs for /dev
Also, it is good to have /dev automatically mounted since some non-initramfs based setups assumes this and don't manually mount it.
Signed-off-by: Fathi Boudra fathi.boudra@linaro.org --- arch/arm/configs/vexpress_defconfig | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/arm/configs/vexpress_defconfig b/arch/arm/configs/vexpress_defconfig index f2de51f..3f970f1 100644 --- a/arch/arm/configs/vexpress_defconfig +++ b/arch/arm/configs/vexpress_defconfig @@ -45,6 +45,8 @@ CONFIG_IP_PNP_BOOTP=y # CONFIG_IPV6 is not set # CONFIG_WIRELESS is not set CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" +CONFIG_DEVTMPFS=y +CONFIG_DEVTMPFS_MOUNT=y CONFIG_MTD=y CONFIG_MTD_CONCAT=y CONFIG_MTD_PARTITIONS=y