From 314e47b7b651db93bbdeb83f4244240ff5d33baa Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 19 Mar 2014 14:07:12 +0000 Subject: [PATCH] ARM: l2c: print a warning with L2C-310 caches if the cache size is modified As we have now removed all instances of the L2C-310 having its cache size "modified" via platform/SoC code, discourage new cases showing up by printing a warning. Signed-off-by: Russell King --- arch/arm/mm/cache-l2x0.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c index ae6e71b3295c..415efc3bee0d 100644 --- a/arch/arm/mm/cache-l2x0.c +++ b/arch/arm/mm/cache-l2x0.c @@ -765,6 +765,8 @@ static void __init __l2c_init(const struct l2c_init_data *data, /* Determine the number of ways */ switch (cache_id & L2X0_CACHE_ID_PART_MASK) { case L2X0_CACHE_ID_PART_L310: + if ((aux_val | ~aux_mask) & (L2C_AUX_CTRL_WAY_SIZE_MASK | L310_AUX_CTRL_ASSOCIATIVITY_16)) + pr_warn("L2C: DT/platform tries to modify or specify cache size\n"); if (aux & (1 << 16)) ways = 16; else -- 2.11.0