From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chris Wilson , Sumit Semwal , Sean Paul , Gustavo Padovan , Gustavo Padovan , Jisheng Zhang Subject: [PATCH 4.9 089/109] dma-buf/sw-sync: Fix the is-signaled test to handle u32 wraparound Date: Thu, 7 Dec 2017 13:57:13 +0100 Message-Id: <20171207125644.904911240@linuxfoundation.org> In-Reply-To: <20171207125634.631485452@linuxfoundation.org> References: <20171207125634.631485452@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Chris Wilson commit 61894b02716f122dd7662d5d89f5b2245ca551e2 upstream. Use the canonical __dma_fence_is_later() to compare the fence seqno against the timeline seqno to check if the fence is signaled. Signed-off-by: Chris Wilson Cc: Sumit Semwal Cc: Sean Paul Cc: Gustavo Padovan Reviewed-by: Sean Paul Signed-off-by: Gustavo Padovan Link: http://patchwork.freedesktop.org/patch/msgid/20170629125930.821-2-chris@chris-wilson.co.uk [s/dma_fence/fence/g - gregkh] Cc: Jisheng Zhang Signed-off-by: Greg Kroah-Hartman --- drivers/dma-buf/sw_sync.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/dma-buf/sw_sync.c +++ b/drivers/dma-buf/sw_sync.c @@ -219,7 +219,7 @@ static bool timeline_fence_signaled(stru { struct sync_timeline *parent = fence_parent(fence); - return (fence->seqno > parent->value) ? false : true; + return !__fence_is_later(fence->seqno, parent->value); } static bool timeline_fence_enable_signaling(struct fence *fence)