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

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Message-Id: <1197997575-13292-1-git-send-email-hskinnemoen@atmel.com>
Date:	Tue, 18 Dec 2007 18:06:10 +0100
From:	Haavard Skinnemoen <hskinnemoen@...el.com>
To:	Andrew Victor <linux@...im.org.za>
Cc:	Remy Bohmer <linux@...mer.net>,
	ARM Linux Mailing List 
	<linux-arm-kernel@...ts.arm.linux.org.uk>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	linux-kernel@...r.kernel.org, kernel@...32linux.org,
	Haavard Skinnemoen <hskinnemoen@...el.com>
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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