From: Huang Shijie <b32955@freescale.com>
Date: Tue, 15 Oct 2013 07:23:40 +0000 (+0800)
Subject: serial: imx: optimization: remove the workqueues for DMA
X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~63^2~25
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7cb92fd2a0515ea2ae905bf6c90a84aed2b78ffb;p=pandora-kernel.git

serial: imx: optimization: remove the workqueues for DMA

I worried that the delay of the sdma_run_channel0() maybe too long for
interrupt context, so I added the workqueues for RX/TX DMA.

But tested with bluetooth device, I find that the delay of sdma_run_channel0()
is about 8us (tested in imx6dl sabreauto board). I think the delay
is acceptable.

This patch removes the RX/TX workqueues for DMA, it makes the
code more clear.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

Reading git-diff-tree failed