kernel-fitimage: uboot-sign: Check UBOOT_DTB_BINARY before adding deps

Since UBOOT_DTB_BINARY empty means we don't need to inject signatures
into the U-Boot DTB, we can remove the dependencies between consumers of
these two classes and resolve a circular dependency between u-boot and
kernel.

(From OE-Core rev: c6b49cb75285e71909d1f9e4bf636f186941b519)

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta/classes/kernel-fitimage.bbclass b/meta/classes/kernel-fitimage.bbclass
index 2820ff9689..9e224daf05 100644
--- a/meta/classes/kernel-fitimage.bbclass
+++ b/meta/classes/kernel-fitimage.bbclass
@@ -42,7 +42,7 @@ python __anonymous () {
         # Verified boot will sign the fitImage and append the public key to
         # U-Boot dtb. We ensure the U-Boot dtb is deployed before assembling
         # the fitImage:
-        if d.getVar('UBOOT_SIGN_ENABLE') == "1":
+        if d.getVar('UBOOT_SIGN_ENABLE') == "1" and d.getVar('UBOOT_DTB_BINARY'):
             uboot_pn = d.getVar('PREFERRED_PROVIDER_u-boot') or 'u-boot'
             d.appendVarFlag('do_assemble_fitimage', 'depends', ' %s:do_populate_sysroot' % uboot_pn)
 }