From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933448AbcFTUJc (ORCPT ); Mon, 20 Jun 2016 16:09:32 -0400 Received: from smtp2.provo.novell.com ([137.65.250.81]:43497 "EHLO smtp2.provo.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755332AbcFTUIc (ORCPT ); Mon, 20 Jun 2016 16:08:32 -0400 From: Davidlohr Bueso To: peterz@infradead.org, mingo@kernel.org Cc: davem@davemloft.net, cw00.choi@samsung.com, dougthompson@xmission.com, bp@alien8.de, mchehab@osg.samsung.com, gregkh@linuxfoundation.org, pfg@sgi.com, jikos@kernel.org, hans.verkuil@cisco.com, awalls@md.metrocast.net, dledford@redhat.com, sean.hefty@intel.com, kys@microsoft.com, heiko.carstens@de.ibm.com, James.Bottomley@HansenPartnership.com, sumit.semwal@linaro.org, schwidefsky@de.ibm.com, linux-kernel@vger.kernel.org, dave@stgolabs.net, Davidlohr Bueso Subject: [PATCH 12/12] dma-buf/fence: Employ atomic_fetch_add Date: Mon, 20 Jun 2016 13:06:04 -0700 Message-Id: <1466453164-13185-13-git-send-email-dave@stgolabs.net> X-Mailer: git-send-email 2.6.6 In-Reply-To: <1466453164-13185-1-git-send-email-dave@stgolabs.net> References: <1466453164-13185-1-git-send-email-dave@stgolabs.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now that we have fetch_add() we can stop using add_return() - num. These are very similar to the existing OP-RETURN primitives we already have, except they return the value of the atomic variable _before_ modification. Cc: Sumit Semwal Signed-off-by: Davidlohr Bueso --- drivers/dma-buf/fence.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma-buf/fence.c b/drivers/dma-buf/fence.c index 7b05dbe9b296..a58da5da112c 100644 --- a/drivers/dma-buf/fence.c +++ b/drivers/dma-buf/fence.c @@ -47,7 +47,7 @@ static atomic_t fence_context_counter = ATOMIC_INIT(0); unsigned fence_context_alloc(unsigned num) { BUG_ON(!num); - return atomic_add_return(num, &fence_context_counter) - num; + return atomic_fetch_add(num, &fence_context_counter); } EXPORT_SYMBOL(fence_context_alloc); -- 2.6.6