linux-kernel - Re: [PATCH 2/4] Blackfin: Serial driver for Blackfin arch on 2.6.18

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Date:	Thu, 21 Sep 2006 09:07:49 -0700
From:	"Randy.Dunlap" <rdunlap@...otime.net>
To:	"Luke Yang" <luke.adi@...il.com>
Cc:	Aubrey <aubreylee@...il.com>,
	"Alan Cox" <alan@...rguk.ukuu.org.uk>,
	linux-kernel@...r.kernel.org, "Andrew Morton" <akpm@...l.org>
Subject: Re: [PATCH 2/4] Blackfin: Serial driver for Blackfin arch on 2.6.18

On Thu, 21 Sep 2006 17:57:03 +0800 Luke Yang wrote:

> Great thanks. Here is the new patch:
> 
>  drivers/serial/Kconfig      |   44 ++
>  drivers/serial/Makefile     |    1
>  drivers/serial/bfin_5xx.c   |  906 ++++++++++++++++++++++++++++++++++++++++++++
>  include/linux/serial_core.h |    3
>  4 files changed, 954 insertions(+)
> 

> +#ifdef CONFIG_SERIAL_BFIN_DMA
> +static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart)
> +{
> +	struct circ_buf *xmit = &uart->port.info->xmit;
> +	unsigned short ier;
> +	int flags = 0;
> +
> +	if (!uart->tx_done)
> +		return;
> +
> +	uart->tx_done = 0;
> +
> +	if (uart->port.x_char) {
> +		UART_PUT_CHAR(uart, uart->port.x_char);
> +		uart->port.icount.tx++;
> +		uart->port.x_char = 0;
> +		uart->tx_done = 1;
> +		return;
> +	}
> +	/*
> +	 * Check the modem control lines before
> +	 * transmitting anything.
> +	 */
> +	bfin_serial_mctrl_check(uart);
> +
> +	if (uart_circ_empty(xmit) || uart_tx_stopped(&uart->port)) {
> +		bfin_serial_stop_tx(&uart->port);
> +		uart->tx_done = 1;
> +		return;
> +	}
> +
> +	local_irq_save(flags);
> +	uart->tx_count = CIRC_CNT(xmit->head, xmit->tail, UART_XMIT_SIZE);
> +	if (uart->tx_count > (UART_XMIT_SIZE - xmit->tail))
> +	uart->tx_count = UART_XMIT_SIZE - xmit->tail;

The line above still needs to be indented one more tab stop.
Otherwise looks OK to me.

---
~Randy
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