From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934569AbbCDGxk (ORCPT ); Wed, 4 Mar 2015 01:53:40 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:43519 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933352AbbCDGUa (ORCPT ); Wed, 4 Mar 2015 01:20:30 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sumit Saxena , Chaitra Basappa , "Martin K. Petersen" , Christoph Hellwig Subject: [PATCH 3.19 056/175] megaraid_sas: disable interrupt_mask before enabling hardware interrupts Date: Tue, 3 Mar 2015 22:13:54 -0800 Message-Id: <20150304061035.797603670@linuxfoundation.org> X-Mailer: git-send-email 2.3.1 In-Reply-To: <20150304061026.134125919@linuxfoundation.org> References: <20150304061026.134125919@linuxfoundation.org> User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: "Sumit.Saxena@avagotech.com" commit c2ced1719a1b903350955a511e1666e6d05a7f5b upstream. Update driver "mask_interrupts" before enable/disable hardware interrupt in order to avoid missing interrupts because of "mask_interrupts" still set to 1 and hardware interrupts are enabled. Signed-off-by: Sumit Saxena Signed-off-by: Chaitra Basappa Reviewed-by: Martin K. Petersen Signed-off-by: Christoph Hellwig Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/megaraid/megaraid_sas_fusion.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -103,6 +103,8 @@ megasas_enable_intr_fusion(struct megasa { struct megasas_register_set __iomem *regs; regs = instance->reg_set; + + instance->mask_interrupts = 0; /* For Thunderbolt/Invader also clear intr on enable */ writel(~0, ®s->outbound_intr_status); readl(®s->outbound_intr_status); @@ -111,7 +113,6 @@ megasas_enable_intr_fusion(struct megasa /* Dummy readl to force pci flush */ readl(®s->outbound_intr_mask); - instance->mask_interrupts = 0; } /**