From: Sujit Reddy Thumma <sthumma@codeaurora.org>
Date: Wed, 23 Nov 2011 03:13:18 +0000 (+0530)
Subject: mmc: core: Fix deadlock when the CONFIG_MMC_UNSAFE_RESUME is not defined
X-Git-Tag: v3.2-rc6~25^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=49df78074963c97e25debc3c67b72f059111607d;p=pandora-kernel.git

mmc: core: Fix deadlock when the CONFIG_MMC_UNSAFE_RESUME is not defined

mmc_suspend_host() tries to claim host during suspend
and release it only when the bus suspend operation is
compeleted. If CONFIG_MMC_UNSAFE_RESUME is defined and
the host is flagged as removable, mmc_suspend_host()
tries to remove the card. In this process, the file system
sync can get blocked trying to acquire host which is already
claimed by mmc_suspend_host() causing deadlock.

Fix this deadlock by releasing host before ->remove() is called.

Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Acked-by: Ulf Hansson <ulf.hansson@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
---

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