[PATCH 03/16] sgi-xp: Replace spin_is_locked() with lockdep

[Lance Roy]

lockdep_assert_held() is better suited to checking locking requirements,
since it won't get confused when someone else holds the lock. This is
also a step towards possibly removing spin_is_locked().

Signed-off-by: Lance Roy <ldr...@gmail.com>
Cc: Cliff Whickman <c...@sgi.com>
Cc: Robin Holt <robinmh...@gmail.com>
Cc: Arnd Bergmann <a...@arndb.de>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/misc/sgi-xp/xpc_channel.c | 6 +++---
 drivers/misc/sgi-xp/xpc_sn2.c     | 2 +-
 drivers/misc/sgi-xp/xpc_uv.c      | 2 +-
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/misc/sgi-xp/xpc_channel.c 
b/drivers/misc/sgi-xp/xpc_channel.c
index 05a890ce2ab8..8e6607fc8a67 100644
--- a/drivers/misc/sgi-xp/xpc_channel.c
+++ b/drivers/misc/sgi-xp/xpc_channel.c
@@ -28,7 +28,7 @@ xpc_process_connect(struct xpc_channel *ch, unsigned long 
*irq_flags)
 {
        enum xp_retval ret;
 
-       DBUG_ON(!spin_is_locked(&ch->lock));
+       lockdep_assert_held(&ch->lock);
 
        if (!(ch->flags & XPC_C_OPENREQUEST) ||
            !(ch->flags & XPC_C_ROPENREQUEST)) {
@@ -82,7 +82,7 @@ xpc_process_disconnect(struct xpc_channel *ch, unsigned long 
*irq_flags)
        struct xpc_partition *part = &xpc_partitions[ch->partid];
        u32 channel_was_connected = (ch->flags & XPC_C_WASCONNECTED);
 
-       DBUG_ON(!spin_is_locked(&ch->lock));
+       lockdep_assert_held(&ch->lock);
 
        if (!(ch->flags & XPC_C_DISCONNECTING))
                return;
@@ -755,7 +755,7 @@ xpc_disconnect_channel(const int line, struct xpc_channel 
*ch,
 {
        u32 channel_was_connected = (ch->flags & XPC_C_CONNECTED);
 
-       DBUG_ON(!spin_is_locked(&ch->lock));
+       lockdep_assert_held(&ch->lock);
 
        if (ch->flags & (XPC_C_DISCONNECTING | XPC_C_DISCONNECTED))
                return;
diff --git a/drivers/misc/sgi-xp/xpc_sn2.c b/drivers/misc/sgi-xp/xpc_sn2.c
index 5a12d2a54049..0ae69b9390ce 100644
--- a/drivers/misc/sgi-xp/xpc_sn2.c
+++ b/drivers/misc/sgi-xp/xpc_sn2.c
@@ -1671,7 +1671,7 @@ xpc_teardown_msg_structures_sn2(struct xpc_channel *ch)
 {
        struct xpc_channel_sn2 *ch_sn2 = &ch->sn.sn2;
 
-       DBUG_ON(!spin_is_locked(&ch->lock));
+       lockdep_assert_held(&ch->lock);
 
        ch_sn2->remote_msgqueue_pa = 0;
 
diff --git a/drivers/misc/sgi-xp/xpc_uv.c b/drivers/misc/sgi-xp/xpc_uv.c
index 340b44d9e8cf..0441abe87880 100644
--- a/drivers/misc/sgi-xp/xpc_uv.c
+++ b/drivers/misc/sgi-xp/xpc_uv.c
@@ -1183,7 +1183,7 @@ xpc_teardown_msg_structures_uv(struct xpc_channel *ch)
 {
        struct xpc_channel_uv *ch_uv = &ch->sn.uv;
 
-       DBUG_ON(!spin_is_locked(&ch->lock));
+       lockdep_assert_held(&ch->lock);
 
        kfree(ch_uv->cached_notify_gru_mq_desc);
        ch_uv->cached_notify_gru_mq_desc = NULL;
-- 
2.19.0