From patchwork Tue Apr 5 13:48:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heikki Krogerus X-Patchwork-Id: 12802069 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 5542FC433FE for ; Tue, 5 Apr 2022 23:26:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232819AbiDEXEP (ORCPT ); Tue, 5 Apr 2022 19:04:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41480 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1442918AbiDEPik (ORCPT ); Tue, 5 Apr 2022 11:38:40 -0400 Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E1F06F8445 for ; Tue, 5 Apr 2022 06:53:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1649166829; x=1680702829; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=1YO+OXyrjMidY3rK/meaulb3J1EfqjF6czt6HhO/u1E=; b=Jd2QGC5APb1iJ01ZhRU33g5pebqMScKnsj0qkKhgUluUnrJ3ntm2OdHG o6vLbloOkm+mV2RCsVpp/CHzNyURP40whoCeP11ty9QEYWaEufrE74EWf fu/v0XjdmeUKclF/uztd0h/K0E4tyPKX2ovuOJX3ontPb3MnbdUtlpwmG KVX38hwbjQMrJACgDDuJz6ZYpu6Q67mRNiYR+NsHAVavvAck91yWNeGAY qJF5r0aJjF3QkVhsdcvmrShwiJgQAQSIlTSUAR3A2JPMDT2qeAS7NFV0c FXQYP/xSFQ/V33gcs0R0t+bm1oK5taqYxX5tfhxpaYlyuom37hP5Fy6dC w==; X-IronPort-AV: E=McAfee;i="6200,9189,10307"; a="259583352" X-IronPort-AV: E=Sophos;i="5.90,236,1643702400"; d="scan'208";a="259583352" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Apr 2022 06:53:49 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,236,1643702400"; d="scan'208";a="696938393" Received: from black.fi.intel.com (HELO black.fi.intel.com.) ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 05 Apr 2022 06:53:48 -0700 From: Heikki Krogerus To: Greg Kroah-Hartman Cc: Jia-Ju Bai , Jack Pham , linux-usb@vger.kernel.org Subject: [PATCH v1 0/2] usb: typec: ucsi: Role swapping fixes Date: Tue, 5 Apr 2022 16:48:22 +0300 Message-Id: <20220405134824.68067-1-heikki.krogerus@linux.intel.com> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Hi, It appears these role swapping routines have been broken for a while. The role swap UCSI commands always actually did work, and the roles were most likely always swapped, but these operations just always appeared to fail because of these bugs. I'm guessing that has kept the problem hidden. Nobody cared about the return values from these operations. It was enough that the roles were swapped in the end. thanks, Heikki Krogerus (2): usb: typec: ucsi: Fix reuse of completion structure usb: typec: ucsi: Fix role swapping drivers/usb/typec/ucsi/ucsi.c | 24 +++++++++++++++++------- 1 file changed, 17 insertions(+), 7 deletions(-)