From patchwork Fri May 1 13:23:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 226576 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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 B31A8C47258 for ; Fri, 1 May 2020 13:49:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9450424956 for ; Fri, 1 May 2020 13:49:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588340971; bh=ZGFQnPj+OU8LVyvSqdIHmCAuOxQ6QFw+O6SrVP/NNeo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=tdJ/dujyTPn+x+r+gQRTWO9df2FbBv551j+58FgtegLjmXTj5D7/UXjOdykBd69rt iDIX31St5n42/4YQCr1u12LlWC5blXrbvq17i03LN9tUrAHrjqy/4t68lLhbE+XAvz UgZgXggAw5aOOwvpGHN9DkZHRFubngBR0orFSkjo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731389AbgEANlG (ORCPT ); Fri, 1 May 2020 09:41:06 -0400 Received: from mail.kernel.org ([198.145.29.99]:41306 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731387AbgEANlF (ORCPT ); Fri, 1 May 2020 09:41:05 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 64F09205C9; Fri, 1 May 2020 13:41:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588340464; bh=ZGFQnPj+OU8LVyvSqdIHmCAuOxQ6QFw+O6SrVP/NNeo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Sogv4oTf4Wt4enideRNpO+XNmXiS5CgwoRvrTez379gGN3LWtOmasRGCRXMMfuvfS 93DqRwWK3gyRigTPLgHjeI2ArgrJetZWe0SzHe2VhwAQKDH3gMNBi+GJkxeh8l2px3 XYEnhSpvBVwtsiOa/EAlhVy4XSUVj/AFbNZDA6Sk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ayush Sawal , "David S. Miller" Subject: [PATCH 5.4 78/83] Crypto: chelsio - Fixes a hang issue during driver registration Date: Fri, 1 May 2020 15:23:57 +0200 Message-Id: <20200501131542.673357618@linuxfoundation.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200501131524.004332640@linuxfoundation.org> References: <20200501131524.004332640@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Ayush Sawal commit ad59ddd02de26271b89564962e74d689f1a30b49 upstream. This issue occurs only when multiadapters are present. Hang happens because assign_chcr_device returns u_ctx pointer of adapter which is not yet initialized as for this adapter cxgb_up is not been called yet. The last_dev pointer is used to determine u_ctx pointer and it is initialized two times in chcr_uld_add in chcr_dev_add respectively. The fix here is don't initialize the last_dev pointer during chcr_uld_add. Only assign to value to it when the adapter's initialization is completed i.e in chcr_dev_add. Fixes: fef4912b66d62 ("crypto: chelsio - Handle PCI shutdown event"). Signed-off-by: Ayush Sawal Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/crypto/chelsio/chcr_core.c | 2 -- 1 file changed, 2 deletions(-) --- a/drivers/crypto/chelsio/chcr_core.c +++ b/drivers/crypto/chelsio/chcr_core.c @@ -125,8 +125,6 @@ static void chcr_dev_init(struct uld_ctx atomic_set(&dev->inflight, 0); mutex_lock(&drv_data.drv_mutex); list_add_tail(&u_ctx->entry, &drv_data.inact_dev); - if (!drv_data.last_dev) - drv_data.last_dev = u_ctx; mutex_unlock(&drv_data.drv_mutex); }