diff --git a/tools/testing/selftests/arm64/Makefile b/tools/testing/selftests/arm64/Makefile
index 9460cbe81bcc..ace8b67fb22d 100644
--- a/tools/testing/selftests/arm64/Makefile
+++ b/tools/testing/selftests/arm64/Makefile
@@ -42,7 +42,7 @@ run_tests: all
 	done
 
 # Avoid any output on non arm64 on emit_tests
-emit_tests: all
+emit_tests:
 	@for DIR in $(ARM64_SUBTARGETS); do				\
 		BUILD_TARGET=$(OUTPUT)/$$DIR;			\
 		make OUTPUT=$$BUILD_TARGET -C $$DIR $@;		\
diff --git a/tools/testing/selftests/mincore/mincore_selftest.c b/tools/testing/selftests/mincore/mincore_selftest.c
index 4c88238fc8f0..e949a43a6145 100644
--- a/tools/testing/selftests/mincore/mincore_selftest.c
+++ b/tools/testing/selftests/mincore/mincore_selftest.c
@@ -150,8 +150,8 @@ TEST(check_huge_pages)
 		MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB,
 		-1, 0);
 	if (addr == MAP_FAILED) {
-		if (errno == ENOMEM)
-			SKIP(return, "No huge pages available.");
+		if (errno == ENOMEM || errno == EINVAL)
+			SKIP(return, "No huge pages available or CONFIG_HUGETLB_PAGE disabled.");
 		else
 			TH_LOG("mmap error: %s", strerror(errno));
 	}
diff --git a/tools/testing/selftests/riscv/Makefile b/tools/testing/selftests/riscv/Makefile
index 9dd629cc86aa..f4b3d5c9af5b 100644
--- a/tools/testing/selftests/riscv/Makefile
+++ b/tools/testing/selftests/riscv/Makefile
@@ -43,7 +43,7 @@ run_tests: all
 	done
 
 # Avoid any output on non riscv on emit_tests
-emit_tests: all
+emit_tests:
 	@for DIR in $(RISCV_SUBTARGETS); do				\
 		BUILD_TARGET=$(OUTPUT)/$$DIR;			\
 		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$DIR $@;		\
diff --git a/tools/testing/selftests/timers/raw_skew.c b/tools/testing/selftests/timers/raw_skew.c
index 5beceeed0d11..6eba203f9da7 100644
--- a/tools/testing/selftests/timers/raw_skew.c
+++ b/tools/testing/selftests/timers/raw_skew.c
@@ -129,8 +129,7 @@ int main(int argc, char **argv)
 	printf("%lld.%i(est)", eppm/1000, abs((int)(eppm%1000)));
 
 	/* Avg the two actual freq samples adjtimex gave us */
-	ppm = (tx1.freq + tx2.freq) * 1000 / 2;
-	ppm = (long long)tx1.freq * 1000;
+	ppm = (long long)(tx1.freq + tx2.freq) * 1000 / 2;
 	ppm = shift_right(ppm, 16);
 	printf(" %lld.%i(act)", ppm/1000, abs((int)(ppm%1000)));