diff options
Diffstat (limited to 'arch/arm/mm')
| -rw-r--r-- | arch/arm/mm/cache-l2x0.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c index fc609550b7fa..1c947b4c7f05 100644 --- a/arch/arm/mm/cache-l2x0.c +++ b/arch/arm/mm/cache-l2x0.c @@ -92,7 +92,9 @@ static void l2c_enable(void __iomem *base, u32 aux, unsigned num_lock) { unsigned long flags; - writel_relaxed(aux, base + L2X0_AUX_CTRL); + /* Only write the aux register if it needs changing */ + if (readl_relaxed(base + L2X0_AUX_CTRL) != aux) + writel_relaxed(aux, base + L2X0_AUX_CTRL); l2c_unlock(base, num_lock); |