From patchwork Mon Apr 29 11:28:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 13646640 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4E40BC04FFE for ; Mon, 29 Apr 2024 11:29:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=I884I3Ndqhmsukyfk0HkI95Zk6eoCUrlsbhxt2ZLnr4=; b=bjyawcXk3x0TyI hXpYvzmupULU7PAReA84y33L0tUEvuz8+328Yz8pbTVYIIFsFJCyObTmlduh3GXpc/kRWsxcjdnjC 0ye2CpmCEdMuWbrJ49CWqtrxJlmtJ5KM5+lqSewESqyrBJwWfKn7NL9HXiMbYzZcDpNgAReSXbw0t mfxXulygg6YpzckUpBZT6YNKixYRiaeLKGQNMP1h+CMZU/ImwrWMyQkl0Gv3IxQujYuGY7pI3jbSQ 9s92GeKjziolbWSIsc2r4cScbg+bxEOzb1x3ZdZ/ugwc2dlXdRjGTqaDEJUGIuWaT2dKtlsLVLQcO XPtqcRxAklmU3SX3ZBbQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s1PC8-00000002RVE-3gIg; Mon, 29 Apr 2024 11:29:16 +0000 Received: from www.zeus03.de ([194.117.254.33] helo=mail.zeus03.de) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s1PBo-00000002RKy-0oel for linux-arm-kernel@lists.infradead.org; Mon, 29 Apr 2024 11:28:57 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= sang-engineering.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; s=k1; bh=tTCtWiINuS6VElP26/IngafNkTKRIxMsJbQoLAWEXag=; b=FS32s8 bmah6IRXRbty3oQurlZK/iOpTiXwlVlHuTDS98+48ztRUvUDA9o9TR6zM41+WC0p kDLol/mdm37N6kFzFCZa3UFR+FcDbe+z8y1m+FRT51PcJwc6j71B4GQkUrb3+kza 062OsVGXS9DCeoeLdvHrdqCqi/1eqida0U+Gs2/pBR5pHPxTFySQ+1JuduILJAnE 8WYfcAGVKbxFg+6s57JnmCuFRHh/PBwnFkhE1T1TBc+eLR3PQj9DbkTAwPSIkNHc yv19OmpdKpZZu9aQh2fyzJrJ4caRG+WMtsgtuHV+Zij1mZEHJvor8P+Dxx/MzFrX viCh6/TlqsnS8C/w== Received: (qmail 2279687 invoked from network); 29 Apr 2024 13:28:50 +0200 Received: by mail.zeus03.de with ESMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 29 Apr 2024 13:28:50 +0200 X-UD-Smtp-Session: l3s3148p1@3dazjjoXCnxtKPB4 From: Wolfram Sang To: linux-spi@vger.kernel.org Cc: Wolfram Sang , Mark Brown , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH 6/8] spi: sun4i: use 'time_left' variable with wait_for_completion_timeout() Date: Mon, 29 Apr 2024 13:28:39 +0200 Message-ID: <20240429112843.67628-7-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240429112843.67628-1-wsa+renesas@sang-engineering.com> References: <20240429112843.67628-1-wsa+renesas@sang-engineering.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240429_042856_549267_59313D0B X-CRM114-Status: GOOD ( 12.47 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org There is a confusing pattern in the kernel to use a variable named 'timeout' to store the result of wait_for_completion_timeout() causing patterns like: timeout = wait_for_completion_timeout(...) if (!timeout) return -ETIMEDOUT; with all kinds of permutations. Use 'time_left' as a variable to make the code self explaining. Fix to the proper variable type 'unsigned long' while here. Signed-off-by: Wolfram Sang Reviewed-by: Andre Przywara Acked-by: Jernej Skrabec --- drivers/spi/spi-sun4i.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi-sun4i.c b/drivers/spi/spi-sun4i.c index 11d8bd27b3e9..2ee6755b43f5 100644 --- a/drivers/spi/spi-sun4i.c +++ b/drivers/spi/spi-sun4i.c @@ -206,7 +206,8 @@ static int sun4i_spi_transfer_one(struct spi_controller *host, struct spi_transfer *tfr) { struct sun4i_spi *sspi = spi_controller_get_devdata(host); - unsigned int mclk_rate, div, timeout; + unsigned int mclk_rate, div; + unsigned long time_left; unsigned int start, end, tx_time; unsigned int tx_len = 0; int ret = 0; @@ -327,10 +328,10 @@ static int sun4i_spi_transfer_one(struct spi_controller *host, tx_time = max(tfr->len * 8 * 2 / (tfr->speed_hz / 1000), 100U); start = jiffies; - timeout = wait_for_completion_timeout(&sspi->done, - msecs_to_jiffies(tx_time)); + time_left = wait_for_completion_timeout(&sspi->done, + msecs_to_jiffies(tx_time)); end = jiffies; - if (!timeout) { + if (!time_left) { dev_warn(&host->dev, "%s: timeout transferring %u bytes@%iHz for %i(%i)ms", dev_name(&spi->dev), tfr->len, tfr->speed_hz,