[PATCH v2] selftests: KVM: Replace optarg with arg in guest_modes_cmdline

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From: Shaoqin Huang <shahuang@xxxxxxxxxx>

The parameter arg in guest_modes_cmdline not being used now, and the
optarg should be replaced with arg in guest_modes_cmdline.

And this is the chance to change strtoul() to atoi_non_negative(), since
guest mode ID will never be negative.

Signed-off-by: Shaoqin Huang <shahuang@xxxxxxxxxx>

---
Changes from v1:
  - Change strtoul() to atoi_non_negative(). [Vipin]

---
 tools/testing/selftests/kvm/lib/guest_modes.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/kvm/lib/guest_modes.c b/tools/testing/selftests/kvm/lib/guest_modes.c
index 99a575bbbc52..1df3ce4b16fd 100644
--- a/tools/testing/selftests/kvm/lib/guest_modes.c
+++ b/tools/testing/selftests/kvm/lib/guest_modes.c
@@ -127,7 +127,7 @@ void guest_modes_cmdline(const char *arg)
 		mode_selected = true;
 	}
 
-	mode = strtoul(optarg, NULL, 10);
+	mode = atoi_non_negative("Guest mode ID", arg);
 	TEST_ASSERT(mode < NUM_VM_MODES, "Guest mode ID %d too big", mode);
 	guest_modes[mode].enabled = true;
 }
-- 
2.39.0




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