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rtc: m48t59: clean up m48t59_nvram_read()/m48t59_nvram_write()
authorVladimir Zapolskiy <vz@mleia.com>
Wed, 5 Aug 2015 18:13:02 +0000 (21:13 +0300)
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>
Sat, 5 Sep 2015 11:19:10 +0000 (13:19 +0200)
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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