diff mbox series

[v2,3/4] kselftest/arm64: Refactor parameter checking in mte_switch_mode()

Message ID 20220419103243.24774-4-broonie@kernel.org
State Superseded
Headers show
Series kselftest/arm64: Miscelaneous MTE test updates | expand

Commit Message

Mark Brown April 19, 2022, 10:32 a.m. UTC 
Currently we just have a big if statement with a non-specific diagnostic
checking both the mode and the tag. Since we'll need to dynamically check
for asymmetric mode support in the system and to improve debugability split
these checks out.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
---
 .../testing/selftests/arm64/mte/mte_common_util.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/tools/testing/selftests/arm64/mte/mte_common_util.c b/tools/testing/selftests/arm64/mte/mte_common_util.c
index 5327aa958171..260206f4dce0 100644
--- a/tools/testing/selftests/arm64/mte/mte_common_util.c
+++ b/tools/testing/selftests/arm64/mte/mte_common_util.c
@@ -273,9 +273,18 @@  int mte_switch_mode(int mte_option, unsigned long incl_mask)
 {
 	unsigned long en = 0;
 
-	if (!(mte_option == MTE_SYNC_ERR || mte_option == MTE_ASYNC_ERR ||
-	      mte_option == MTE_NONE_ERR || incl_mask <= MTE_ALLOW_NON_ZERO_TAG)) {
-		ksft_print_msg("FAIL: Invalid mte config option\n");
+	switch (mte_option) {
+	case MTE_NONE_ERR:
+	case MTE_SYNC_ERR:
+	case MTE_ASYNC_ERR:
+		break;
+	default:
+		ksft_print_msg("FAIL: Invalid MTE option %x\n", mte_option);
+		return -EINVAL;
+	}
+
+	if (!(incl_mask <= MTE_ALLOW_NON_ZERO_TAG)) {
+		ksft_print_msg("FAIL: Invalid incl_mask %lx\n", incl_mask);
 		return -EINVAL;
 	}
 	en = PR_TAGGED_ADDR_ENABLE;