From patchwork Tue Jan 12 15:12:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 361463 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 692B7C433E0 for ; Tue, 12 Jan 2021 15:14:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1CA6323132 for ; Tue, 12 Jan 2021 15:14:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404604AbhALPNT (ORCPT ); Tue, 12 Jan 2021 10:13:19 -0500 Received: from www.zeus03.de ([194.117.254.33]:42712 "EHLO mail.zeus03.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404578AbhALPNS (ORCPT ); Tue, 12 Jan 2021 10:13:18 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple; d=sang-engineering.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; s=k1; bh=3KzDC+8syWTyvZ Mn9GmFYMT4GOAjOIEzOj4X2jJeGRc=; b=z10cvDY/EwwrliGKm+9FR891nxDXHT euAY8YBMV633ZRFb6pYph450YVpS8RcGs2Kp2zgZXMM7wmYwyxCdif9U8EGX59qI M8QXItQbGxOyfNNZIvUMzrtoM+vPuUwVUYLm27AhUmCvXuzxgbYGSbol+57LvPy/ tHRadmFVaEXQo= Received: (qmail 2786184 invoked from network); 12 Jan 2021 16:12:36 +0100 Received: by mail.zeus03.de with ESMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 12 Jan 2021 16:12:36 +0100 X-UD-Smtp-Session: l3s3148p1@i47fc7W4eL4gAwDPXwxzAXsl+VVkdePs From: Wolfram Sang To: linux-i2c@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, Wolfram Sang Subject: [PATCH 2/2] i2c: smbus: improve naming in i2c_smbus_xfer_emulated() Date: Tue, 12 Jan 2021 16:12:30 +0100 Message-Id: <20210112151230.46518-3-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210112151230.46518-1-wsa+renesas@sang-engineering.com> References: <20210112151230.46518-1-wsa+renesas@sang-engineering.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org This may be just taste, but I think 'nmsgs' is way more readable than a generic 'num' variable. Also, fix spaces around operators while here. Signed-off-by: Wolfram Sang --- drivers/i2c/i2c-core-smbus.c | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/drivers/i2c/i2c-core-smbus.c b/drivers/i2c/i2c-core-smbus.c index 6cda46913d89..d2d32c0fd8c3 100644 --- a/drivers/i2c/i2c-core-smbus.c +++ b/drivers/i2c/i2c-core-smbus.c @@ -323,7 +323,7 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter *adapter, u16 addr, */ unsigned char msgbuf0[I2C_SMBUS_BLOCK_MAX+3]; unsigned char msgbuf1[I2C_SMBUS_BLOCK_MAX+2]; - int num = read_write == I2C_SMBUS_READ ? 2 : 1; + int nmsgs = read_write == I2C_SMBUS_READ ? 2 : 1; u8 partial_pec = 0; int status; struct i2c_msg msg[2] = { @@ -349,13 +349,13 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter *adapter, u16 addr, /* Special case: The read/write field is used as data */ msg[0].flags = flags | (read_write == I2C_SMBUS_READ ? I2C_M_RD : 0); - num = 1; + nmsgs = 1; break; case I2C_SMBUS_BYTE: if (read_write == I2C_SMBUS_READ) { /* Special case: only a read! */ msg[0].flags = I2C_M_RD | flags; - num = 1; + nmsgs = 1; } break; case I2C_SMBUS_BYTE_DATA: @@ -376,7 +376,7 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter *adapter, u16 addr, } break; case I2C_SMBUS_PROC_CALL: - num = 2; /* Special case */ + nmsgs = 2; /* Special case */ read_write = I2C_SMBUS_READ; msg[0].len = 3; msg[1].len = 2; @@ -403,7 +403,7 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter *adapter, u16 addr, } break; case I2C_SMBUS_BLOCK_PROC_CALL: - num = 2; /* Another special case */ + nmsgs = 2; /* Another special case */ read_write = I2C_SMBUS_READ; if (data->block[0] > I2C_SMBUS_BLOCK_MAX) { dev_err(&adapter->dev, @@ -447,28 +447,28 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter *adapter, u16 addr, if (wants_pec) { /* Compute PEC if first message is a write */ if (!(msg[0].flags & I2C_M_RD)) { - if (num == 1) /* Write only */ + if (nmsgs == 1) /* Write only */ i2c_smbus_add_pec(&msg[0]); else /* Write followed by read */ partial_pec = i2c_smbus_msg_pec(0, &msg[0]); } /* Ask for PEC if last message is a read */ - if (msg[num-1].flags & I2C_M_RD) - msg[num-1].len++; + if (msg[nmsgs - 1].flags & I2C_M_RD) + msg[nmsgs - 1].len++; } - status = __i2c_transfer(adapter, msg, num); + status = __i2c_transfer(adapter, msg, nmsgs); if (status < 0) goto cleanup; - if (status != num) { + if (status != nmsgs) { status = -EIO; goto cleanup; } status = 0; /* Check PEC if last message is a read */ - if (wants_pec && (msg[num-1].flags & I2C_M_RD)) { - status = i2c_smbus_check_pec(partial_pec, &msg[num-1]); + if (wants_pec && (msg[nmsgs - 1].flags & I2C_M_RD)) { + status = i2c_smbus_check_pec(partial_pec, &msg[nmsgs - 1]); if (status < 0) goto cleanup; }