[PATCH 5.4 073/102] intel_th: msu: Fix the unexpected state warning

[Greg Kroah-Hartman]

From: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>

commit 885f123554bbdc1807ca25a374be6e9b3bddf4de upstream.

The unexpected state warning should only warn on illegal state
transitions. Fix that.

Signed-off-by: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Fixes: 615c164da0eb4 ("intel_th: msu: Introduce buffer interface")
Cc: stable@xxxxxxxxxxxxxxx # v5.4+
Link: https://lore.kernel.org/r/20200317062215.15598-5-alexander.shishkin@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/hwtracing/intel_th/msu.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -718,9 +718,6 @@ static int msc_win_set_lockout(struct ms
 
 	if (old != expect) {
 		ret = -EINVAL;
-		dev_warn_ratelimited(msc_dev(win->msc),
-				     "expected lockout state %d, got %d\n",
-				     expect, old);
 		goto unlock;
 	}
 
@@ -741,6 +738,10 @@ unlock:
 		/* from intel_th_msc_window_unlock(), don't warn if not locked */
 		if (expect == WIN_LOCKED && old == new)
 			return 0;
+
+		dev_warn_ratelimited(msc_dev(win->msc),
+				     "expected lockout state %d, got %d\n",
+				     expect, old);
 	}
 
 	return ret;