From f6a6d96685be6e784849d067b44acb831f595417 Mon Sep 17 00:00:00 2001
From: Yi Li <yi.li@analog.com>
Date: Wed, 3 Jun 2009 09:46:22 +0000
Subject: [PATCH] spi/bfin_spi: utilize the SPI interrupt in PIO mode

The current behavior in PIO mode is to poll the SPI status registers which
can obviously lead to higher latencies when doing a lot of SPI traffic.
There is a SPI interrupt which can be used instead to signal individual
completion of transactions.

Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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