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7dd03eaeec
Some Linux distributions always include a copy of all persistent device configuration data when updating the initial RAM-disk. This makes chzdev's persistent device configuration changes ineffective because device configuration directives applied in the RAM-disk take precedence over those stored in the root filesystem. This patch introduces a new build-time switch which allows distributions to specify that whenever there is a persistent device configuration change, the RAM-disk is updated automatically. This feature can be enabled by adding 'ZDEV_ALWAYS_UPDATE_INITRD=1' as a zdev build option. Where, by default ZDEV_ALWAYS_UPDATE_INITRD is 0. Co-developed-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com> Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>