From patchwork Wed May 4 16:43:30 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 569872 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 A3052C433EF for ; Wed, 4 May 2022 16:55:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354356AbiEDQ6m (ORCPT ); Wed, 4 May 2022 12:58:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35658 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1354353AbiEDQ5u (ORCPT ); Wed, 4 May 2022 12:57:50 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 608D24A3D2; Wed, 4 May 2022 09:50:05 -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 ams.source.kernel.org (Postfix) with ESMTPS id A671AB827A0; Wed, 4 May 2022 16:50:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3C980C385A4; Wed, 4 May 2022 16:50:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1651683002; bh=yygj4gzvlcT7SWxDWyCdvMa3wTi8PxJIsAe9weyBJdY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0T3DnL5fsD/vBcUHO+EIlOOIPl2RfGm+cFtIG5ITcIs6U/RoybOip8DVkhBpxu8hh JSSF2gQGIAG+uhalfW0sIMuAx9ft8n1bE7z/ZHChMIuyeBS4vxHmwojQ1WHz5Jei7P nHNH3rgdXM1tEwz2M1AdpdtFRWzDHtdWgoho7sIE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Heikki Krogerus , Jack Pham Subject: [PATCH 5.10 018/129] usb: typec: ucsi: Fix reuse of completion structure Date: Wed, 4 May 2022 18:43:30 +0200 Message-Id: <20220504153022.746748462@linuxfoundation.org> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20220504153021.299025455@linuxfoundation.org> References: <20220504153021.299025455@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Heikki Krogerus commit e25adcca917d7e4cdc1dc6444d0692ffda7594bf upstream. The role swapping completion variable is reused, so it needs to be reinitialised every time. Otherwise it will be marked as done after the first time it's used and completing immediately. Link: https://lore.kernel.org/linux-usb/20220325203959.GA19752@jackp-linux.qualcomm.com/ Fixes: 6df475f804e6 ("usb: typec: ucsi: Start using struct typec_operations") Cc: stable@vger.kernel.org Reported-and-suggested-by: Jack Pham Signed-off-by: Heikki Krogerus Link: https://lore.kernel.org/r/20220405134824.68067-2-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/typec/ucsi/ucsi.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -928,6 +928,8 @@ static int ucsi_dr_swap(struct typec_por role == TYPEC_HOST)) goto out_unlock; + reinit_completion(&con->complete); + command = UCSI_SET_UOR | UCSI_CONNECTOR_NUMBER(con->num); command |= UCSI_SET_UOR_ROLE(role); command |= UCSI_SET_UOR_ACCEPT_ROLE_SWAPS; @@ -964,6 +966,8 @@ static int ucsi_pr_swap(struct typec_por if (cur_role == role) goto out_unlock; + reinit_completion(&con->complete); + command = UCSI_SET_PDR | UCSI_CONNECTOR_NUMBER(con->num); command |= UCSI_SET_PDR_ROLE(role); command |= UCSI_SET_PDR_ACCEPT_ROLE_SWAPS;