From patchwork Thu Mar 30 10:23:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 13193799 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 3DEC8C6FD1D for ; Thu, 30 Mar 2023 10:27:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230134AbjC3K1r (ORCPT ); Thu, 30 Mar 2023 06:27:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44310 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229564AbjC3K1o (ORCPT ); Thu, 30 Mar 2023 06:27:44 -0400 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 718CE72A7; Thu, 30 Mar 2023 03:27:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1680172063; x=1711708063; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=vsso8X59jkwfS8FUc+qT+mBVmfIXBVin+KTPPha6LF8=; b=h0yHz4lMGE6+yemI1twXONAwf5J+Ls+iqorfH4gisWaVW9fULVhuWBcg dzqtzzoFongDoWSVQEANyJNkTVeByc6NisOnM/cRGgRotuhSru7/61Hgg 4pNUu/BGbF5OILtF1oKVT6DDFmLW7TqV2El/c1LZd3n8BrRO0LM7WeHqS wnMZs1i8lP4MGBwNZ5NbdGVE3pJpEKAU4soowpld8QMeqcz4OUmtrYz+1 qTPk+v/3GgPx8nCRfm4XmPJpqv/WXj37exUgqcVjN3g0xe2VHxHuxjBTh 1nwyuidinAWrqTa0H9K324UpD19x3zXApT28tEhMZ2p4s6C4qVN/tUILn g==; X-IronPort-AV: E=McAfee;i="6600,9927,10664"; a="368909798" X-IronPort-AV: E=Sophos;i="5.98,303,1673942400"; d="scan'208";a="368909798" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Mar 2023 03:27:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10664"; a="634831399" X-IronPort-AV: E=Sophos;i="5.98,303,1673942400"; d="scan'208";a="634831399" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga003.jf.intel.com with ESMTP; 30 Mar 2023 03:27:39 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 6AF2D80A; Thu, 30 Mar 2023 13:23:49 +0300 (EEST) From: Andy Shevchenko To: Mika Westerberg , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Andreas Noever , Michael Jamet , Yehezkel Bernat , Andy Shevchenko Subject: [PATCH v1 1/1] thunderbolt: Introduce usb4_port_sb_opcode_err_to_errno() helper Date: Thu, 30 Mar 2023 13:23:42 +0300 Message-Id: <20230330102342.44090-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.40.0.1.gaa8946217a0b MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org The usb4_port_sb_opcode_err_to_errno() converts from USB4 error codes to the Linux errno space. In particular, this makes the intention of the repeating usb4_port_retimer_read() call in the usb4_port_retimer_nvm_authenticate_status() clearer. Signed-off-by: Andy Shevchenko --- drivers/thunderbolt/usb4.c | 41 +++++++++++++++++++------------------- 1 file changed, 20 insertions(+), 21 deletions(-) diff --git a/drivers/thunderbolt/usb4.c b/drivers/thunderbolt/usb4.c index 12355929e586..485b6e430686 100644 --- a/drivers/thunderbolt/usb4.c +++ b/drivers/thunderbolt/usb4.c @@ -1303,6 +1303,20 @@ static int usb4_port_sb_write(struct tb_port *port, enum usb4_sb_target target, return 0; } +static int usb4_port_sb_opcode_err_to_errno(u32 val) +{ + switch (val) { + case 0: + return 0; + case USB4_SB_OPCODE_ERR: + return -EAGAIN; + case USB4_SB_OPCODE_ONS: + return -EOPNOTSUPP; + default: + return -EIO; + } +} + static int usb4_port_sb_op(struct tb_port *port, enum usb4_sb_target target, u8 index, enum usb4_sb_opcode opcode, int timeout_msec) { @@ -1325,21 +1339,8 @@ static int usb4_port_sb_op(struct tb_port *port, enum usb4_sb_target target, if (ret) return ret; - switch (val) { - case 0: - return 0; - - case USB4_SB_OPCODE_ERR: - return -EAGAIN; - - case USB4_SB_OPCODE_ONS: - return -EOPNOTSUPP; - - default: - if (val != opcode) - return -EIO; - break; - } + if (val != opcode) + return usb4_port_sb_opcode_err_to_errno(val); } while (ktime_before(ktime_get(), timeout)); return -ETIMEDOUT; @@ -1814,12 +1815,13 @@ int usb4_port_retimer_nvm_authenticate_status(struct tb_port *port, u8 index, if (ret) return ret; - switch (val) { + ret = usb4_port_sb_opcode_err_to_errno(val); + switch (ret) { case 0: *status = 0; return 0; - case USB4_SB_OPCODE_ERR: + case -EAGAIN: ret = usb4_port_retimer_read(port, index, USB4_SB_METADATA, &metadata, sizeof(metadata)); if (ret) @@ -1828,11 +1830,8 @@ int usb4_port_retimer_nvm_authenticate_status(struct tb_port *port, u8 index, *status = metadata & USB4_SB_METADATA_NVM_AUTH_WRITE_MASK; return 0; - case USB4_SB_OPCODE_ONS: - return -EOPNOTSUPP; - default: - return -EIO; + return ret; } }