linux-kernel - Re: [PATCH 0/5] atmel_serial: Cleanups, irq handler splitup & DMA

Open Source and information security mailing list archives

Date:	Wed, 19 Dec 2007 09:29:52 +0200
From:	"Vadim Yatsenko" <vadim.yatsenko@...va.ua>
To:	"Haavard Skinnemoen" <hskinnemoen@...el.com>,
	"Andrew Victor" <linux@...im.org.za>
Cc:	"Russell King - ARM Linux" <linux@....linux.org.uk>,
	"Haavard Skinnemoen" <hskinnemoen@...el.com>,
	<kernel@...32linux.org>, <linux-kernel@...r.kernel.org>,
	"Remy Bohmer" <linux@...mer.net>,
	"ARM Linux Mailing List" <linux-arm-kernel@...ts.arm.linux.org.uk>
Subject: Re: [PATCH 0/5] atmel_serial: Cleanups, irq handler splitup & DMA

What prepatches one need to aply to what kernel version (vanila, git, ...) 
before these?

With best regards, Vadim Yatsenko.

----- Original Message ----- 
From: "Haavard Skinnemoen" <hskinnemoen@...el.com>
To: "Andrew Victor" <linux@...im.org.za>
Cc: "Russell King - ARM Linux" <linux@....linux.org.uk>; "Haavard 
Skinnemoen" <hskinnemoen@...el.com>; <kernel@...32linux.org>; 
<linux-kernel@...r.kernel.org>; "Remy Bohmer" <linux@...mer.net>; "ARM Linux 
Mailing List" <linux-arm-kernel@...ts.arm.linux.org.uk>
Sent: Tuesday, December 18, 2007 7:06 PM
Subject: [PATCH 0/5] atmel_serial: Cleanups, irq handler splitup & DMA

> The following patchset cleans up the atmel_serial driver a bit,
> moves a significant portion of the interrupt handler into a tasklet,
> and adds DMA support. This is the result of a combined effort by Chip
> Coldwell, Remy Bohmer and me. The patches should apply cleanly onto
> Linus' latest git tree.
>
> It all seems to behave both with and without DMA enabled, but I'll do
> some more testing tomorrow.
>
> Note that break and error handling doesn't work too well with DMA
> enabled. This is a common problem with all the efforts I've seen
> adding DMA support to this driver (including my own). I'm tempted to
> just ignore the problem for now and hopefully come up with a solution
> later.
>
> Everyone, please give it a try and/or review the code.
>
> PS: Andrew, I'm sending it to you because I believe you're the
> maintainer of this driver, although MAINTAINERS doesn't say anything
> about it. Please let me know if this isn't how you want it.
>
> Chip Coldwell (1):
>      atmel_serial: Add DMA support
>
> Haavard Skinnemoen (2):
>      atmel_serial: Use cpu_relax() when busy-waiting
>      atmel_serial: Use existing console options only if BRG is running
>
> Remy Bohmer (2):
>      atmel_serial: Clean up the code
>      atmel_serial: Split the interrupt handler
>
> drivers/serial/atmel_serial.c |  881 
> ++++++++++++++++++++++++++++++++---------
> 1 files changed, 700 insertions(+), 181 deletions(-)
>
> -------------------------------------------------------------------
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> http://lists.arm.linux.org.uk/mailman/listinfo/linux-arm-kernel
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> 

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