From: Alek Du <alek.du@intel.com>
Date: Wed, 30 Mar 2011 15:09:54 +0000 (+0800)
Subject: spi/dw_spi: change poll mode transfer from byte ops to batch ops
X-Git-Tag: v3.0-rc1~133^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2ff271bf6505038d8c937e73438ea3c80c387439;p=pandora-kernel.git

spi/dw_spi: change poll mode transfer from byte ops to batch ops

Current poll transfer will read/write one word, then wait till the
hw is non-busy, it's not efficient. This patch will try to read/write
as many words as permitted by hardware FIFO depth.

Signed-off-by: Alek Du <alek.du@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---

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