From patchwork Mon May 6 11:40:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 795151 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 AE7DF143870 for ; Mon, 6 May 2024 11:40:34 +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=1714995636; cv=none; b=j5f0VHm9MEyNsLqSn4u3LvoOMU74X+mQmPctdQNGenWli84GbJkHPZu4OuSJJLluPnVgtFRypd0L4sDYr1RYAiUi+g64II3fitLb/NYKsmsHWpPrYsilz3XRFl2KBrUo5c+58GcdnD7pVnqXSTfNUSU+OxXUzSu+RzqD65UOiDQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714995636; c=relaxed/simple; bh=tZekCqwesM0TH7zbeTcT2ilFSjF/za++SpAUFY+hRMU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ml+ZqnBHVaO2Gzg0aoVG+OonK5yvuUvibq5ep44stwybAXgzdEl6qN7ML+zhZ7O+dPy7/tJgwADz0PEut8d3QiZ7t9/QcBe3V8VCYjTV5zZKsp7lB/t78q113kHz6QMjzvHuUE+HqqawjGGEAYA0llE/1+HODRzJwMK+4jl00xI= 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=HD4MITfX; 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="HD4MITfX" 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=b0eZn/5/l2EZquZuG8Vtq1BaQMNdvpMDot1jtzd3GNg=; b=HD4MIT fXtOLqSvs5hTbA609YvGcnRMuFmzuICm/BtAj+c7CFjQ+FcgZvTdguYi26x4Gx5x aUwskDia3s9CmBxlYF0vK4tcwVMJWYq0JGmpBQetCLRpJ3MBZMmLR/xejuf7j8iL JLURDLYzEnAFWI2iDSS2dfOzdaAThty39XSG33dTBxgL7IndmgVjAUsw2jsrXVNo O6P7ChA2KzQZQpEuNb0JzAl8IRzJS4viA2Foado0LN/0QR5Uqinl6a32202excsa va0+l5ivdZgiLfM/pFxO+I/0EmdqzX9hH0wL9YoiFQQlUNAn42T1GEteyK6X9oDQ exAdH/P/YqpZfaeA== Received: (qmail 172901 invoked from network); 6 May 2024 13:40:32 +0200 Received: by mail.zeus03.de with ESMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 6 May 2024 13:40:32 +0200 X-UD-Smtp-Session: l3s3148p1@fa5riccXlLYgAwDPX0CuAO+oYiCi4tWm From: Wolfram Sang To: linux-renesas-soc@vger.kernel.org Cc: Wolfram Sang , Greg Kroah-Hartman , Jiri Slaby , linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org Subject: [PATCH 4/4] serial: sh-sci: simplify locking when re-issuing RXDMA fails Date: Mon, 6 May 2024 13:40:20 +0200 Message-ID: <20240506114016.30498-10-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240506114016.30498-6-wsa+renesas@sang-engineering.com> References: <20240506114016.30498-6-wsa+renesas@sang-engineering.com> Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Avoid a superfluous unlock/lock-pair by simply moving the printout to the end of bailing out. Signed-off-by: Wolfram Sang --- drivers/tty/serial/sh-sci.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index 7cc354ee6305..4dc9c142690a 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1361,14 +1361,12 @@ static void sci_dma_rx_complete(void *arg) return; fail: - uart_port_unlock_irqrestore(port, flags); - dev_warn(port->dev, "Failed submitting Rx DMA descriptor\n"); /* Switch to PIO */ - uart_port_lock_irqsave(port, &flags); dmaengine_terminate_async(chan); sci_dma_rx_chan_invalidate(s); sci_dma_rx_reenable_irq(s); uart_port_unlock_irqrestore(port, flags); + dev_warn(port->dev, "Failed submitting Rx DMA descriptor\n"); } static void sci_dma_tx_release(struct sci_port *s)