From patchwork Tue Apr 30 12:01:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 793793 Received: from mail.zeus03.de (www.zeus03.de [194.117.254.33]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DF95A13F014 for ; Tue, 30 Apr 2024 12:01:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=194.117.254.33 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714478468; cv=none; b=KjT5tLa6P+zvmKT+JSjYDjFunnpMyAhIqgMTdn9JkYD8ZFKZY6TkjhwJ6Rs53YSv5xPEV9ztRcF+oYZQNtfvBXBgoD9PfS8CWtn2XGNhxc0bgu+zxyRgDAb0abgP9739IkLFYr+qj42hmDJJqjZmrHjl/nIDR1YvArV8AEqgllo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714478468; c=relaxed/simple; bh=gDpT6Hc1jPudL9uBZtdVkdWFHK/SVqgJ6+WeFAVOPnc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=O+guxcv0MkkA41W3GRD9ADmemPBJb32bsIWDdo/UdqLNb8mQRJPpqTn0mSGNF/nZ8ZCO5KdD7NdSNllLu2+TuoNNwbNQcuTk4XzlftoN5+d1tccBWA9ayKRU+Btjy8SQ3PC6NPzi8FDk3Lzp5tlC+lY6/pOQbk0XVL3ELLX5obU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com; spf=pass smtp.mailfrom=sang-engineering.com; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b=N0haDqpx; arc=none smtp.client-ip=194.117.254.33 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b="N0haDqpx" 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=owc6KVsVgzzTz/FV7NYmF6XOfOcxz0hvsD0eutcgSVw=; b=N0haDq pxWXb+XdO8iIPJiHIgxZU8eG9QqxT1yjkGPCZTyFr9Y1BMdQ2m0s/VHsIVnwXdth Ak8WrCciQ0AD3lHH7vJKoFvSyczumHHfDfd6FWs7JqLcMuceOffzsaY1/BSOYH2R XT0f8ZYRHtyE1go4qbEGMFLy3ymcqoM85XOgi+SBg4XA1ZpbwdWQid1vs6OrxfH8 1anisMLPNnmD4wygYCbDAbSuxVJWfxOxjNmBn27z2YRMfzFakyxjEeImBSZKW5sj wsmT2/W0oenRuM6mCay3F48kqrHQfQze3Zga9gh0phC80vfl5jOPxcPHKHK/Joec 4CFUWyIoje9PcgaA== Received: (qmail 2623526 invoked from network); 30 Apr 2024 14:01:05 +0200 Received: by mail.zeus03.de with ESMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 30 Apr 2024 14:01:05 +0200 X-UD-Smtp-Session: l3s3148p1@eA3fH08XoJZehhrb From: Wolfram Sang To: alsa-devel@alsa-project.org Cc: Wolfram Sang , Bjorn Andersson , Konrad Dybcio , Srinivas Kandagatla , linux-arm-msm@vger.kernel.org Subject: [PATCH 3/3] slimbus: qcom-ngd-ctrl: use 'time_left' variable with wait_for_completion_timeout() Date: Tue, 30 Apr 2024 14:01:01 +0200 Message-ID: <20240430120102.29459-4-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240430120102.29459-1-wsa+renesas@sang-engineering.com> References: <20240430120102.29459-1-wsa+renesas@sang-engineering.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 --- drivers/slimbus/qcom-ngd-ctrl.c | 29 ++++++++++++++++------------- 1 file changed, 16 insertions(+), 13 deletions(-) diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c index efeba8275a66..21b4008de4f3 100644 --- a/drivers/slimbus/qcom-ngd-ctrl.c +++ b/drivers/slimbus/qcom-ngd-ctrl.c @@ -789,7 +789,8 @@ static int qcom_slim_ngd_xfer_msg(struct slim_controller *sctrl, struct qcom_slim_ngd_ctrl *ctrl = dev_get_drvdata(sctrl->dev); DECLARE_COMPLETION_ONSTACK(tx_sent); DECLARE_COMPLETION_ONSTACK(done); - int ret, timeout, i; + int ret, i; + unsigned long time_left; u8 wbuf[SLIM_MSGQ_BUF_LEN]; u8 rbuf[SLIM_MSGQ_BUF_LEN]; u32 *pbuf; @@ -891,8 +892,8 @@ static int qcom_slim_ngd_xfer_msg(struct slim_controller *sctrl, return ret; } - timeout = wait_for_completion_timeout(&tx_sent, HZ); - if (!timeout) { + time_left = wait_for_completion_timeout(&tx_sent, HZ); + if (!time_left) { dev_err(sctrl->dev, "TX timed out:MC:0x%x,mt:0x%x", txn->mc, txn->mt); mutex_unlock(&ctrl->tx_lock); @@ -900,8 +901,8 @@ static int qcom_slim_ngd_xfer_msg(struct slim_controller *sctrl, } if (usr_msg) { - timeout = wait_for_completion_timeout(&done, HZ); - if (!timeout) { + time_left = wait_for_completion_timeout(&done, HZ); + if (!time_left) { dev_err(sctrl->dev, "TX timed out:MC:0x%x,mt:0x%x", txn->mc, txn->mt); mutex_unlock(&ctrl->tx_lock); @@ -917,7 +918,8 @@ static int qcom_slim_ngd_xfer_msg_sync(struct slim_controller *ctrl, struct slim_msg_txn *txn) { DECLARE_COMPLETION_ONSTACK(done); - int ret, timeout; + int ret; + unsigned long time_left; ret = pm_runtime_get_sync(ctrl->dev); if (ret < 0) @@ -929,8 +931,8 @@ static int qcom_slim_ngd_xfer_msg_sync(struct slim_controller *ctrl, if (ret) goto pm_put; - timeout = wait_for_completion_timeout(&done, HZ); - if (!timeout) { + time_left = wait_for_completion_timeout(&done, HZ); + if (!time_left) { dev_err(ctrl->dev, "TX timed out:MC:0x%x,mt:0x%x", txn->mc, txn->mt); ret = -ETIMEDOUT; @@ -1169,11 +1171,12 @@ static int qcom_slim_ngd_power_up(struct qcom_slim_ngd_ctrl *ctrl) enum qcom_slim_ngd_state cur_state = ctrl->state; struct qcom_slim_ngd *ngd = ctrl->ngd; u32 laddr, rx_msgq; - int timeout, ret = 0; + int ret = 0; + unsigned long time_left; if (ctrl->state == QCOM_SLIM_NGD_CTRL_DOWN) { - timeout = wait_for_completion_timeout(&ctrl->qmi.qmi_comp, HZ); - if (!timeout) + time_left = wait_for_completion_timeout(&ctrl->qmi.qmi_comp, HZ); + if (!time_left) return -EREMOTEIO; } @@ -1218,8 +1221,8 @@ static int qcom_slim_ngd_power_up(struct qcom_slim_ngd_ctrl *ctrl) ngd->base + NGD_RX_MSGQ_CFG); qcom_slim_ngd_setup(ctrl); - timeout = wait_for_completion_timeout(&ctrl->reconf, HZ); - if (!timeout) { + time_left = wait_for_completion_timeout(&ctrl->reconf, HZ); + if (!time_left) { dev_err(ctrl->dev, "capability exchange timed-out\n"); return -ETIMEDOUT; }