From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751532AbdBOCGD (ORCPT ); Tue, 14 Feb 2017 21:06:03 -0500 Received: from relay1.sgi.com ([192.48.180.66]:39737 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751318AbdBOCGC (ORCPT ); Tue, 14 Feb 2017 21:06:02 -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 5/6] x86/platform/uv/BAU: Remove initial write to swack register Date: Tue, 14 Feb 2017 19:58:50 -0600 Message-Id: <1487123931-56809-6-git-send-email-abanman@hpe.com> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1487123931-56809-1-git-send-email-abanman@hpe.com> References: <1487123931-56809-1-git-send-email-abanman@hpe.com> 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(-) Index: community/arch/x86/platform/uv/tlb_uv.c =================================================================== --- community.orig/arch/x86/platform/uv/tlb_uv.c +++ community/arch/x86/platform/uv/tlb_uv.c @@ -1924,7 +1924,6 @@ 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);