From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <4CFE86AC.9010801@codeaurora.org>
Date: Tue, 07 Dec 2010 11:10:36 -0800
From: Stephen Boyd <sboyd@codeaurora.org>
MIME-Version: 1.0
Subject: Re: [PATCH] drivers: char: hvc: add arm JTAG DCC console support
References: <1291145141-18301-1-git-send-email-dwalker@codeaurora.org>	 <4CF5DD63.40803@codeaurora.org> <1291229696.14404.39.camel@c-dwalke-linux.qualcomm.com> <4CF6AE04.6030201@codeaurora.org>
In-Reply-To: <4CF6AE04.6030201@codeaurora.org>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
To: Tony Lindgren <tony@atomide.com>
Cc: Daniel Walker <dwalker@codeaurora.org>, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>, Nicolas Pitre <nico@fluxnic.net>, Greg Kroah-Hartman <gregkh@suse.de>, Mike Frysinger <vapier@gentoo.org>, Andrew Morton <akpm@linux-foundation.org>, Alan Cox <alan@lxorguk.ukuu.org.uk>, Randy Dunlap <randy.dunlap@oracle.com>, FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>, linuxppc-dev@lists.ozlabs.org
List-ID: <linux-arm-msm.vger.kernel.org>

On 12/01/2010 12:20 PM, Stephen Boyd wrote:
> Definitely for TX since it seems like a redundant loop, but I agree RX
> code has changed. Instead of
>
> If RX buffer full
> Poll for RX buffer full
> Read character from RX buffer
>
> we would have
>
> If RX buffer full
> Read character from RX buffer
>
> which doesn't seem all that different assuming the RX buffer doesn't go
> from full to empty between the If and Poll steps. Hopefully Tony knows more.
>

Tony, any thoughts?

-- 
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.