From 94144a465dd0b34b3249f988a09472d0f57ad2b7 Mon Sep 17 00:00:00 2001
From: Kevin Liu <kliu5@marvell.com>
Date: Thu, 28 Feb 2013 17:35:53 +0800
Subject: [PATCH] mmc: sdhci: add get_cd() implementation

1. mmc_rescan will call get_cd to know whether the card is present
before mmc_rescan_try_freq to avoid useless trials during
card removal or start host is called when card is not present.

2. get_cd needs to be checked to resolve slow card removal issue.

Signed-off-by: Kevin Liu <kliu5@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
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