From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Mon, 11 May 2015 07:34:53 +0000 (+0000)
Subject: mmc: cast u8 to unsigned long long to avoid unexpected error
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~161^2~52
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ded8a5f9613dbb62cd74f9f26a9caa3193eb3764;p=pandora-kernel.git

mmc: cast u8 to unsigned long long to avoid unexpected error

card->ext_csd.enhanced_area_offset is defined as "unsigned long long",
and, ext_csd[] is defined as u8.
unsigned long long data might have strange data if first bit of ext_csd[]
was 1. this patch cast it to (unsigned long long)
Special thanks to coverity <http://www.coverity.com>

ex)
        u8  data8;
        u64 data64;

        data8 = 0x80;
        data64 = (data8 << 24); // 0xffffffff80000000
        data64 = (((unsigned long long)data8) << 24); // 0x80000000;

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
---

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