From c49433fb66935bd01930e37c7f47d38b6f8135fc Mon Sep 17 00:00:00 2001
From: Ulf Hansson <ulf.hansson@linaro.org>
Date: Wed, 29 Jan 2014 11:01:55 +0100
Subject: [PATCH] mmc: block: Implement card_busy_detect() for busy detection

To complete a data write request we poll for the card's status register
by sending CMD13. The are other scenarios when this polling method are
needed, which is why we here moves this code to it's own function. No
functional change.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
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