From: Wei WANG <wei_wang@realsil.com.cn>
Date: Sun, 27 Jan 2013 00:55:16 +0000 (+0100)
Subject: mfd: rtsx: Fix oops when rtsx_pci_sdmmc is not probed
X-Git-Tag: v3.8-rc6~19^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2d1484f5990c094e2c706672a8d286576dd096b4;p=pandora-kernel.git

mfd: rtsx: Fix oops when rtsx_pci_sdmmc is not probed

If rtsx_pci_sdmmc is not probed, function pointer pcr->slots[].card_event
will point to NULL, and thus rtsx_pci_card_detect will reference a NULL
pointer.
Check card_event pointer before referencing it can avoid kernel panic.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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