From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 51D28C43387 for ; Mon, 17 Dec 2018 04:19:29 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 2181F20645 for ; Mon, 17 Dec 2018 04:19:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="q2/W0o0N" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2181F20645 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=csie.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=AUjQsFZ3L7yt1CYREwa2lbx3amprJL+qRM99IMeAcUI=; b=q2/W0o0NubCdp2 TomdcC/vjPiznYHfmWhRg/QoRxd4ZuDOCVuh+PWwiw2ilAtVkEO/W7eaKtpTRsTblAjbzfC51uMu4 V0uiWkWmopI97G38PUoj+3W+DpFLTzYlrNWyBYl0VpJsAjQVKOaLQEQoVghg8QPb4Pvoe3B24cNGM m+eff0lXfdIRsLAbsGnly5e7R2O9V/cbGOpJbC6zFHrdfcFitMbiNXQfMcGTpE0zTbqXfrPrEqm8t jrTbiuC9WaOOelKw+ZtYbnZOhJ0GKmtClnR/WOm2rU6eOWkW5fJSA6/5g8e0D9PxeQeEq2ahOsn8n ILwZHbZ9QLnG2ND95A3w==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gYkNJ-0007Em-2Q; Mon, 17 Dec 2018 04:19:25 +0000 Received: from mirror2.csie.ntu.edu.tw ([140.112.30.76] helo=wens.csie.org) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gYk9v-0000F3-9m for linux-arm-kernel@lists.infradead.org; Mon, 17 Dec 2018 04:05:44 +0000 Received: by wens.csie.org (Postfix, from userid 1000) id 693E15FD90; Mon, 17 Dec 2018 12:05:03 +0800 (CST) From: Chen-Yu Tsai To: Marcel Holtmann , Johan Hedberg , Rob Herring , Mark Rutland , Maxime Ripard Subject: [PATCH v3 06/15] Bluetooth: hci_bcm: Simplify clk_get error handling Date: Mon, 17 Dec 2018 12:04:40 +0800 Message-Id: <20181217040449.31437-7-wens@csie.org> X-Mailer: git-send-email 2.20.0 In-Reply-To: <20181217040449.31437-1-wens@csie.org> References: <20181217040449.31437-1-wens@csie.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181216_200536_275515_7A94C6DC X-CRM114-Status: GOOD ( 13.39 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ondrej Jirman , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-bluetooth@vger.kernel.org, Chen-Yu Tsai , Loic Poulain , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org The driver currently checks the clk pointer for an error condition, as returned by clk_get, before every invocation of the clk consumer API. This is redundant if the goal is simply to ignore the errors, thereby making the clk optional. The clk consumer API already checks if the pointer is NULL or not. Simplify the code a bit by assigning NULL to the clk pointer if the error condition is one we want to ignore, which is every error except deferred probing. Tested-by: Ondrej Jirman Signed-off-by: Chen-Yu Tsai --- drivers/bluetooth/hci_bcm.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c index 800132369134..ff73ecb8215f 100644 --- a/drivers/bluetooth/hci_bcm.c +++ b/drivers/bluetooth/hci_bcm.c @@ -214,7 +214,7 @@ static int bcm_gpio_set_power(struct bcm_device *dev, bool powered) { int err; - if (powered && !IS_ERR(dev->clk) && !dev->clk_enabled) { + if (powered && !dev->clk_enabled) { err = clk_prepare_enable(dev->clk); if (err) return err; @@ -228,7 +228,7 @@ static int bcm_gpio_set_power(struct bcm_device *dev, bool powered) if (err) goto err_revert_shutdown; - if (!powered && !IS_ERR(dev->clk) && dev->clk_enabled) + if (!powered && dev->clk_enabled) clk_disable_unprepare(dev->clk); dev->clk_enabled = powered; @@ -238,7 +238,7 @@ static int bcm_gpio_set_power(struct bcm_device *dev, bool powered) err_revert_shutdown: dev->set_shutdown(dev, !powered); err_clk_disable: - if (powered && !IS_ERR(dev->clk) && !dev->clk_enabled) + if (powered && !dev->clk_enabled) clk_disable_unprepare(dev->clk); return err; } @@ -911,6 +911,10 @@ static int bcm_get_resources(struct bcm_device *dev) if (dev->clk == ERR_PTR(-EPROBE_DEFER)) return PTR_ERR(dev->clk); + /* Ignore all other errors as before */ + if (IS_ERR(dev->clk)) + dev->clk = NULL; + dev->device_wakeup = devm_gpiod_get_optional(dev->dev, "device-wakeup", GPIOD_OUT_LOW); if (IS_ERR(dev->device_wakeup)) -- 2.20.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel