From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934536AbdBQRIO (ORCPT ); Fri, 17 Feb 2017 12:08:14 -0500 Received: from relay3.sgi.com ([192.48.152.1]:40281 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S934122AbdBQRIN (ORCPT ); Fri, 17 Feb 2017 12:08:13 -0500 From: Andrew Banman To: mingo@redhat.com Cc: akpm@linux-foundation.org, tglx@linutronix.de, hpa@zytor.com, mike.travis@hpe.com, rja@hpe.com, sivanich@hpe.com, x86@kernel.org, linux-kernel@vger.kernel.org, abanman@hpe.com Subject: [PATCH] x86/platform/uv/BAU: Remove initial write to swack register Date: Fri, 17 Feb 2017 11:07:49 -0600 Message-Id: <1487351269-181133-1-git-send-email-abanman@hpe.com> X-Mailer: git-send-email 1.8.2.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Writing to the software acknowledge clear register when there are no pending messages causes a HUB error to assert. The original intent of this write was to clear the pending bits before start of operation, but this is an incorrect method and has been determined to be unnecessary. Signed-off-by: Andrew Banman Acked-by: Mike Travis --- arch/x86/platform/uv/tlb_uv.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c index 766d4d3..f25982c 100644 --- a/arch/x86/platform/uv/tlb_uv.c +++ b/arch/x86/platform/uv/tlb_uv.c @@ -1847,7 +1847,6 @@ static void pq_init(int node, int pnode) ops.write_payload_first(pnode, first); ops.write_payload_last(pnode, last); - ops.write_g_sw_ack(pnode, 0xffffUL); /* in effect, all msg_type's are set to MSG_NOOP */ memset(pqp, 0, sizeof(struct bau_pq_entry) * DEST_Q_SIZE); -- 1.8.2.1