From patchwork Tue Jun 9 17:44:26 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: 224607 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, URIBL_BLOCKED, 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 7E181C433DF for ; Tue, 9 Jun 2020 18:22:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 62E9F2067B for ; Tue, 9 Jun 2020 18:22:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591726973; bh=L99taIM+omKw6xpLci/GzbwOu6gRvGvUPFTqXy6EsDM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=NvyonA1bMqm35xk4YBGRiO0MYHse5QiNGAlcr/JjFtIYhrN21yJqyxJfvsFs5WJS0 CHoWAobU7W6A/lfC0uXlYAwR0a8xsmxzfwEAGKSNmeUVYRh/k2eUk2XP7KlsPNf31+ sVl1BQQ0OvyDAyuMWpFRkI3DzI3/SwJTe+6QHdt0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728304AbgFISWp (ORCPT ); Tue, 9 Jun 2020 14:22:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:60004 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732212AbgFIRsD (ORCPT ); Tue, 9 Jun 2020 13:48:03 -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 21D5F207F9; Tue, 9 Jun 2020 17:48:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591724883; bh=L99taIM+omKw6xpLci/GzbwOu6gRvGvUPFTqXy6EsDM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=09hjy3maDUW6fBMjwjHJLi0y+SfOjlsDmm8SvCAUkAmoNtB5dd7lqABoX84vCc/51 vw0CIJKTfvZXG+tzOL8vxLgaNU+WjdwQsR/JYVYb1eABr7qm6x46j9OCeTnzamLWsS tiWpfN8Jg/SAbafr5RQ77QImqLBpf2xZlrLFf56U= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Bean Huo , Can Guo , "Martin K. Petersen" , Eric Biggers Subject: [PATCH 4.9 20/42] scsi: ufs: Release clock if DMA map fails Date: Tue, 9 Jun 2020 19:44:26 +0200 Message-Id: <20200609174017.670122929@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200609174015.379493548@linuxfoundation.org> References: <20200609174015.379493548@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: Can Guo commit 17c7d35f141ef6158076adf3338f115f64fcf760 upstream. In queuecommand path, if DMA map fails, it bails out with clock held. In this case, release the clock to keep its usage paired. [mkp: applied by hand] Link: https://lore.kernel.org/r/0101016ed3d66395-1b7e7fce-b74d-42ca-a88a-4db78b795d3b-000000@us-west-2.amazonses.com Reviewed-by: Bean Huo Signed-off-by: Can Guo Signed-off-by: Martin K. Petersen [EB: resolved cherry-pick conflict caused by newer kernels not having the clear_bit_unlock() line] Signed-off-by: Eric Biggers Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/ufs/ufshcd.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -1512,6 +1512,7 @@ static int ufshcd_queuecommand(struct Sc err = ufshcd_map_sg(hba, lrbp); if (err) { + ufshcd_release(hba); lrbp->cmd = NULL; clear_bit_unlock(tag, &hba->lrb_in_use); goto out;