From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org (mail.kernel.org. [198.145.29.99]) by gmr-mx.google.com with ESMTPS id i17si370159pjv.1.2020.06.17.18.21.42 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 17 Jun 2020 18:21:42 -0700 (PDT) From: Sasha Levin Subject: [PATCH AUTOSEL 5.4 241/266] NTB: perf: Don't require one more memory window than number of peers Date: Wed, 17 Jun 2020 21:16:06 -0400 Message-Id: <20200618011631.604574-241-sashal@kernel.org> In-Reply-To: <20200618011631.604574-1-sashal@kernel.org> References: <20200618011631.604574-1-sashal@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Logan Gunthorpe , Allen Hubbe , Alexander Fomichev , Jon Mason , Sasha Levin , linux-ntb@googlegroups.com List-ID: From: Logan Gunthorpe [ Upstream commit a9c4211ac918ade1522aced6b5acfbe824722f7d ] ntb_perf should not require more than one memory window per peer. This was probably an off-by-one error. Fixes: 5648e56d03fa ("NTB: ntb_perf: Add full multi-port NTB API support") Signed-off-by: Logan Gunthorpe Acked-by: Allen Hubbe Tested-by: Alexander Fomichev Signed-off-by: Jon Mason Signed-off-by: Sasha Levin --- drivers/ntb/test/ntb_perf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ntb/test/ntb_perf.c b/drivers/ntb/test/ntb_perf.c index 52c29791fc02..3817eadab2cf 100644 --- a/drivers/ntb/test/ntb_perf.c +++ b/drivers/ntb/test/ntb_perf.c @@ -653,7 +653,7 @@ static int perf_init_service(struct perf_ctx *perf) { u64 mask; - if (ntb_peer_mw_count(perf->ntb) < perf->pcnt + 1) { + if (ntb_peer_mw_count(perf->ntb) < perf->pcnt) { dev_err(&perf->ntb->dev, "Not enough memory windows\n"); return -EINVAL; } -- 2.25.1