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Since update_flash() is used only in update_tftp(), it should be guarded with appropriate config options. After the commit3149e524fc
, common/update.c will be built under either CONFIG_UDATE_TFTP, CONFIG_DFU_TFTP or CONFIG_UPDATE_FIT. Since CONFIG_UPDATE_FIT, hence fit_update(), doesn't rely on update_flash(), the compiler may cause an "unused" warning if CONFIG_UPDATE_FIT=y and CONFIG_UPDATE_TFTP=n and CONFIG_DFU_TFTP=n. This is, for example, the case for sandbox defconfig where EFI_CAPSULE_FIRMWARE_FIT is enabled for test purpose. Fixes:3149e524fc
("common: update: add a generic interface for FIT image") Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>