lib/test_kho: check if KHO is enabled

We must check whether KHO is enabled prior to issuing KHO commands,
otherwise KHO internal data structures are not initialized.

Link: https://lkml.kernel.org/r/[email protected]
Fixes: b753522 ("kho: add test for kexec handover")
Signed-off-by: Pasha Tatashin <[email protected]>
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-lkp/[email protected]
Reviewed-by: Pratyush Yadav <[email protected]>
Reviewed-by: Mike Rapoport (Microsoft) <[email protected]>
Cc: Alexander Graf <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: soleen

lib/test_kho.c

@@ -301,6 +301,9 @@ static int __init kho_test_init(void)
 	phys_addr_t fdt_phys;
 	int err;
 
+	if (!kho_is_enabled())
+		return 0;
+
 	err = kho_retrieve_subtree(KHO_TEST_FDT, &fdt_phys);
 	if (!err)
 		return kho_test_restore(fdt_phys);