locking/rwsem: Fix warnings for CONFIG_RWSEM_GENERIC_SPINLOCK
authorDavidlohr Bueso <davidlohr@hp.com>
Tue, 20 May 2014 00:27:57 +0000 (17:27 -0700)
committerIngo Molnar <mingo@kernel.org>
Thu, 5 Jun 2014 08:38:45 +0000 (10:38 +0200)
commitdbb5eafa23fdb7a00d64b04e23a3efc59d6474cb
tree9b6fb18c62d1cb2ea2b047ac1b87da62477f4656
parent4fc828e24cd9c385d3a44e1b499ec7fc70239d8a
locking/rwsem: Fix warnings for CONFIG_RWSEM_GENERIC_SPINLOCK

Optimistic spinning is only used by the xadd variant
of rw-semaphores. Make sure that we use the old version
of the __RWSEM_INITIALIZER macro for systems that rely
on the spinlock one, otherwise warnings can be triggered,
such as the following reported on an arm box:

  ipc/ipcns_notifier.c:22:8: warning: excess elements in struct initializer [enabled by default]
  ipc/ipcns_notifier.c:22:8: warning: (near initialization for 'ipcns_chain.rwsem') [enabled by default]
  ipc/ipcns_notifier.c:22:8: warning: excess elements in struct initializer [enabled by default]
  ipc/ipcns_notifier.c:22:8: warning: (near initialization for 'ipcns_chain.rwsem') [enabled by default]

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Alex Shi <alex.shi@linaro.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Jason Low <jason.low2@hp.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <jbacik@fusionio.com>
Link: http://lkml.kernel.org/r/1400545677.6399.10.camel@buesod1.americas.hpqcorp.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
include/linux/rwsem.h