Thread (1 message) 1 message, 1 author, 2018-11-11
STALE2820d

[PATCH tip/core/rcu 3/7] smsc: Replace spin_is_locked() with lockdep

From: Paul E. McKenney <hidden>
Date: 2018-11-11 20:05:00
Also in: lkml
Subsystem: networking drivers, smsc911x ethernet driver, the rest · Maintainers: Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Steve Glendinning, Linus Torvalds

From: Lance Roy <redacted>

lockdep_assert_held() is better suited to checking locking requirements,
since it only checks if the current thread holds the lock regardless of
whether someone else does. This is also a step towards possibly removing
spin_is_locked().

Signed-off-by: Lance Roy <redacted>
Cc: Steve Glendinning <steve.glendinning@shawell.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: <redacted>
Signed-off-by: Paul E. McKenney <redacted>
---
 drivers/net/ethernet/smsc/smsc911x.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/smsc/smsc911x.h b/drivers/net/ethernet/smsc/smsc911x.h
index 8d75508acd2b..51b2fc1a395f 100644
--- a/drivers/net/ethernet/smsc/smsc911x.h
+++ b/drivers/net/ethernet/smsc/smsc911x.h
@@ -67,7 +67,7 @@
 
 #ifdef CONFIG_DEBUG_SPINLOCK
 #define SMSC_ASSERT_MAC_LOCK(pdata) \
-		WARN_ON_SMP(!spin_is_locked(&pdata->mac_lock))
+		lockdep_assert_held(&pdata->mac_lock)
 #else
 #define SMSC_ASSERT_MAC_LOCK(pdata) do {} while (0)
 #endif				/* CONFIG_DEBUG_SPINLOCK */
-- 
2.17.1
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