From patchwork Tue Apr 26 08:20:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 566536 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 10E12C433EF for ; Tue, 26 Apr 2022 09:03:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230237AbiDZJGb (ORCPT ); Tue, 26 Apr 2022 05:06:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39044 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347431AbiDZJFh (ORCPT ); Tue, 26 Apr 2022 05:05:37 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C54AA12010E; Tue, 26 Apr 2022 01:44:41 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 5FEB16133B; Tue, 26 Apr 2022 08:44:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 533DEC385AE; Tue, 26 Apr 2022 08:44:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1650962680; bh=bOp/BP4lyuCh0nGRQPZAmPuB9T8MC+2Xng4CvR1ltGc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RvpJ2uZcxDfNjBWXlg0rNrPVOOAdV/uPEE8lXYLAw5OF2s0n3NxrdngjSvfbL5iB+ /l3cIVGDPmAEtPiP8t5JKpPs/LBLTzxy3okArkj/jBrN3f9yOibkgPW/xyy6tA5qGu obxb/lrobmNeWWTz2Ss79aeIrUEe1sgnOlVUkXco= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tony Zhu , Dave Jiang , Vinod Koul , Sasha Levin Subject: [PATCH 5.17 052/146] dmaengine: idxd: skip clearing device context when device is read-only Date: Tue, 26 Apr 2022 10:20:47 +0200 Message-Id: <20220426081751.532726298@linuxfoundation.org> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20220426081750.051179617@linuxfoundation.org> References: <20220426081750.051179617@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Dave Jiang [ Upstream commit 1cd8e751d96c43ece3f6842ac2244a37d9332c3a ] If the device shows up as read-only configuration, skip the clearing of the state as the context must be preserved for device re-enable after being disabled. Fixes: 0dcfe41e9a4c ("dmanegine: idxd: cleanup all device related bits after disabling device") Reported-by: Tony Zhu Tested-by: Tony Zhu Signed-off-by: Dave Jiang Link: https://lore.kernel.org/r/164971479479.2200566.13980022473526292759.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/dma/idxd/device.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c index 5a0535a0f850..f652da6ab47d 100644 --- a/drivers/dma/idxd/device.c +++ b/drivers/dma/idxd/device.c @@ -708,6 +708,9 @@ static void idxd_device_wqs_clear_state(struct idxd_device *idxd) void idxd_device_clear_state(struct idxd_device *idxd) { + if (!test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) + return; + idxd_groups_clear_state(idxd); idxd_engines_clear_state(idxd); idxd_device_wqs_clear_state(idxd);