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 10:26:23 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Luke Yang <luke.adi@...il.com>
Cc:	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

Ar Iau, 2006-09-21 am 11:33 +0800, ysgrifennodd Luke Yang:
> Hi,
> 
> This is the serial driver for Blackfin. It is designed for the serial
> core framework.

> +#define DMA_RX_XCOUNT		TTY_FLIPBUF_SIZE

TTY_FLIPBUF_SIZE is going away. Just pick a value good for your hardware
and under PAGE_SIZE.

Other question - is your locking ok for low latency. In low latency mode
tty_flip_buffer_push() may directly end up calling your write methods.

Otherwise looks good

Alan

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