On some devices the environment variable serial# cannot be overwritten.
Set the variable only if it is not set.
For our unit test it is sufficient to test if any value for serial-number
is set.
Fixes: 8a5cdf601f ("test: efi_selftest: Do not force serial# setting")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
9.0 KiB
9.0 KiB