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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-02-10 11:12:55 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-02-10 11:13:53 -0800
commit7483948fdd31a8642ef0288aab6f368b98d53c29 (patch)
tree031020a5553701d2aae8dddb0fa509aa65854eb1 /arch/arm/mach-ux500/cache-l2x0.c
parent22a416c4e0f2179b57028e084ac0ed2c110333bd (diff)
parentfe250923bbbbcbccc9aa7b84d05ee7a060450534 (diff)
Merge tag 'usb-3.3-rc3' into usb-next
This is done to resolve a merge conflict with: drivers/usb/class/cdc-wdm.c and to better handle future patches for this driver as it is under active development at the moment. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm/mach-ux500/cache-l2x0.c')
-rw-r--r--arch/arm/mach-ux500/cache-l2x0.c48
1 files changed, 7 insertions, 41 deletions
diff --git a/arch/arm/mach-ux500/cache-l2x0.c b/arch/arm/mach-ux500/cache-l2x0.c
index 122ddde00ba7..da5569d83d58 100644
--- a/arch/arm/mach-ux500/cache-l2x0.c
+++ b/arch/arm/mach-ux500/cache-l2x0.c
@@ -12,44 +12,6 @@
static void __iomem *l2x0_base;
-static inline void ux500_cache_wait(void __iomem *reg, unsigned long mask)
-{
- /* wait for the operation to complete */
- while (readl_relaxed(reg) & mask)
- cpu_relax();
-}
-
-static inline void ux500_cache_sync(void)
-{
- writel_relaxed(0, l2x0_base + L2X0_CACHE_SYNC);
- ux500_cache_wait(l2x0_base + L2X0_CACHE_SYNC, 1);
-}
-
-/*
- * The L2 cache cannot be turned off in the non-secure world.
- * Dummy until a secure service is in place.
- */
-static void ux500_l2x0_disable(void)
-{
-}
-
-/*
- * This is only called when doing a kexec, just after turning off the L2
- * and L1 cache, and it is surrounded by a spinlock in the generic version.
- * However, we're not really turning off the L2 cache right now and the
- * PL310 does not support exclusive accesses (used to implement the spinlock).
- * So, the invalidation needs to be done without the spinlock.
- */
-static void ux500_l2x0_inv_all(void)
-{
- uint32_t l2x0_way_mask = (1<<16) - 1; /* Bitmask of active ways */
-
- /* invalidate all ways */
- writel_relaxed(l2x0_way_mask, l2x0_base + L2X0_INV_WAY);
- ux500_cache_wait(l2x0_base + L2X0_INV_WAY, l2x0_way_mask);
- ux500_cache_sync();
-}
-
static int __init ux500_l2x0_unlock(void)
{
int i;
@@ -85,9 +47,13 @@ static int __init ux500_l2x0_init(void)
/* 64KB way size, 8 way associativity, force WA */
l2x0_init(l2x0_base, 0x3e060000, 0xc0000fff);
- /* Override invalidate function */
- outer_cache.disable = ux500_l2x0_disable;
- outer_cache.inv_all = ux500_l2x0_inv_all;
+ /*
+ * We can't disable l2 as we are in non secure mode, currently
+ * this seems be called only during kexec path. So let's
+ * override outer.disable with nasty assignment until we have
+ * some SMI service available.
+ */
+ outer_cache.disable = NULL;
return 0;
}