From: Vladimir Zapolskiy <vz@mleia.com>
Date: Wed, 5 Aug 2015 18:13:02 +0000 (+0300)
Subject: rtc: m48t59: clean up m48t59_nvram_read()/m48t59_nvram_write()
X-Git-Tag: omap-for-v4.3/fixes-rc1~63^2~44
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=99be3e371b2ac03b936044139be10cf0c7b9cc58;p=pandora-kernel.git

rtc: m48t59: clean up m48t59_nvram_read()/m48t59_nvram_write()

The change removes redundant sysfs binary file boundary checks, since
this task is already done on caller side in fs/sysfs/file.c

Spinlock acquisition/release is moved out of the loop body to get
atomic states of NVRAM reading and writing operations.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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