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ARM: OMAP: counter: add locking to read_persistent_clock
authorColin Cross <ccross@android.com>
Mon, 8 Oct 2012 21:01:12 +0000 (14:01 -0700)
committerTony Lindgren <tony@atomide.com>
Mon, 8 Oct 2012 21:01:12 +0000 (14:01 -0700)
commit9d7d6e363b06934221b81a859d509844c97380df
tree9b46831e4161307d6571724654f049da5b04a55atree | snapshot (tar.gz zip)
parent5e090ed7af10729a396a25df43d69a236e789736commit | diff
ARM: OMAP: counter: add locking to read_persistent_clock

read_persistent_clock uses a global variable, use a spinlock to
ensure non-atomic updates to the variable don't overlap and cause
time to move backwards.

Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: R Sricharan <r.sricharan@ti.com>
Cc: stable@vger.kernel.org
Signed-off-by: Tony Lindgren <tony@atomide.com>
arch/arm/plat-omap/counter_32k.c diff | blob | blame | history