From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E5296C43603 for ; Wed, 11 Dec 2019 15:31:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B8F3022B48 for ; Wed, 11 Dec 2019 15:31:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576078289; bh=lKfNCLbge06ynSeeNl/69Gff5vv7u1VpkCKKbvmLJHI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=0wHRBsP3y1AEnJV9TkmWcKJ7KJXZM8u249msFo7H4qWuik3xLhmjsHU0zXfnCU94H PYJ9VDXPMDLE+3i/BTA3ZfOLE0v6F9DeB99VNwCRJc1eyxGwJArJSLsOtdzEy+nC4J L2jPlYx1kJ8CmCle8L8itCaBiEiQ1qL+KrdctA70= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388022AbfLKPb2 (ORCPT ); Wed, 11 Dec 2019 10:31:28 -0500 Received: from mail.kernel.org ([198.145.29.99]:35974 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387804AbfLKP3R (ORCPT ); Wed, 11 Dec 2019 10:29:17 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3EF872467A; Wed, 11 Dec 2019 15:29:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576078157; bh=lKfNCLbge06ynSeeNl/69Gff5vv7u1VpkCKKbvmLJHI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xw/2L71X7KWmKCpo3bX8mj9GnXmYlNYkIc7i5RU41C9A0SGnX3YUD4kktRVxcdUa3 39PBnhtI6cO//eEPbCm17eIGHDEh+k/7YtQ7R9VZp3p3mWoEH/2kTAzC2sSj8cj1Ls Uk/Fg1hlK3a8+Voo4aN49IkcsaC0fMz1v2wXO60g= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Finn Thain , Michael Schmitz , "Martin K . Petersen" , Sasha Levin , linux-scsi@vger.kernel.org Subject: [PATCH AUTOSEL 4.14 42/58] scsi: NCR5380: Add disconnect_mask module parameter Date: Wed, 11 Dec 2019 10:28:15 -0500 Message-Id: <20191211152831.23507-42-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191211152831.23507-1-sashal@kernel.org> References: <20191211152831.23507-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Finn Thain [ Upstream commit 0b7a223552d455bcfba6fb9cfc5eef2b5fce1491 ] Add a module parameter to inhibit disconnect/reselect for individual targets. This gains compatibility with Aztec PowerMonster SCSI/SATA adapters with buggy firmware. (No fix is available from the vendor.) Apparently these adapters pass-through the product/vendor of the attached SATA device. Since they can't be identified from the response to an INQUIRY command, a device blacklist flag won't work. Cc: Michael Schmitz Link: https://lore.kernel.org/r/993b17545990f31f9fa5a98202b51102a68e7594.1573875417.git.fthain@telegraphics.com.au Reviewed-and-tested-by: Michael Schmitz Signed-off-by: Finn Thain Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/NCR5380.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c index 21377ac71168c..79b0b4eece194 100644 --- a/drivers/scsi/NCR5380.c +++ b/drivers/scsi/NCR5380.c @@ -129,6 +129,9 @@ #define NCR5380_release_dma_irq(x) #endif +static unsigned int disconnect_mask = ~0; +module_param(disconnect_mask, int, 0444); + static int do_abort(struct Scsi_Host *); static void do_reset(struct Scsi_Host *); static void bus_reset_cleanup(struct Scsi_Host *); @@ -946,7 +949,8 @@ static bool NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd) int err; bool ret = true; bool can_disconnect = instance->irq != NO_IRQ && - cmd->cmnd[0] != REQUEST_SENSE; + cmd->cmnd[0] != REQUEST_SENSE && + (disconnect_mask & BIT(scmd_id(cmd))); NCR5380_dprint(NDEBUG_ARBITRATION, instance); dsprintk(NDEBUG_ARBITRATION, instance, "starting arbitration, id = %d\n", -- 2.20.1