From mboxrd@z Thu Jan 1 00:00:00 1970 From: Suman Tripathi Subject: [PATCH 2/2] ahci_xgene: Enable AHCI_HFLAG_EDGE_IRQ_BROKEN for APM X-Gen2 SATA host controller Date: Mon, 11 Jan 2016 15:36:03 +0530 Message-ID: <1452506763-18649-3-git-send-email-stripathi@apm.com> References: <1452506763-18649-1-git-send-email-stripathi@apm.com> Return-path: In-Reply-To: <1452506763-18649-1-git-send-email-stripathi@apm.com> Sender: linux-ide-owner@vger.kernel.org To: olof@lixom.net, tj@kernel.org, arnd@arndb.de Cc: linux-ide@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, mlangsdo@redhat.com, jcm@redhat.com, patches@apm.com, Suman Tripathi List-Id: devicetree@vger.kernel.org This patch enables the AHCI_HFLAG_EDGE_IRQ_BROKEN for APM X-Gene2 AHCI SATA host controller. Due to H/W errata, the HOST_IRQ_STAT misses the edge interrupt from PORT_IRQ_STAT when clearing the HOST_IRQ_STAT and reporting the PORT_IRQ_STAT at the same clock cycle. Signed-off-by: Suman Tripathi --- drivers/ata/ahci_xgene.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/ata/ahci_xgene.c b/drivers/ata/ahci_xgene.c index e2c6d9e..57c8463 100644 --- a/drivers/ata/ahci_xgene.c +++ b/drivers/ata/ahci_xgene.c @@ -779,7 +779,8 @@ skip_clk_phy: hpriv->flags = AHCI_HFLAG_NO_NCQ; break; case XGENE_AHCI_V2: - hpriv->flags |= AHCI_HFLAG_YES_FBS | AHCI_HFLAG_EDGE_IRQ; + hpriv->flags |= AHCI_HFLAG_YES_FBS | AHCI_HFLAG_EDGE_IRQ | + AHCI_HFLAG_EDGE_IRQ_BROKEN; break; default: break; -- 1.7.1