[PATCH v2] s390: fix dead defaults for S390_MODULES_SANITY_TEST and S390_UNWIND_SELFTEST

[Julian Braha]

These config options currently have unconditional defaults of 'n' from the
def_tristate statement, which shadow the later default of
'KUNIT_ALL_TESTS', causing it to be dead code.

It looks to me like the commit 25d36a85c61b ("s390/test_unwind: convert to KUnit")
added the KUNIT_ALL_TESTS default to S390_UNWIND_SELFTEST, but mistakenly
didn't remove the previous 'n' default.

Then, the later commit 90c5318795ee ("s390/module: test loading modules with a lot of relocations")
copied the Kconfig layout from S390_UNWIND_SELFTEST when adding the
S390_MODULES_SANITY_TEST config option, without noticing the existing mistake.

This dead code was found by kconfirm, a static analysis tool for Kconfig.

Signed-off-by: Julian Braha <julianbraha@xxxxxxxxx>
---
v2: remove Fixes tags
Link to v1: https://lore.kernel.org/all/20260414215651.151228-1-julianbraha@xxxxxxxxx/
---
 arch/s390/Kconfig | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index ecbcbb781e40..4bd1023a45a3 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -999,9 +999,8 @@ config S390_MODULES_SANITY_TEST_HELPERS
 menu "Selftests"
 
 config S390_UNWIND_SELFTEST
-	def_tristate n
+	def_tristate KUNIT_ALL_TESTS
 	depends on KUNIT
-	default KUNIT_ALL_TESTS
 	prompt "Test unwind functions"
 	help
 	  This option enables s390 specific stack unwinder testing kernel
@@ -1023,9 +1022,8 @@ config S390_KPROBES_SANITY_TEST
 	  Say N if you are unsure.
 
 config S390_MODULES_SANITY_TEST
-	def_tristate n
+	def_tristate KUNIT_ALL_TESTS
 	depends on KUNIT && m
-	default KUNIT_ALL_TESTS
 	prompt "Enable s390 specific modules tests"
 	select S390_MODULES_SANITY_TEST_HELPERS
 	help
-- 
2.53.0