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Diffstat (limited to 'arch/mips/kernel/mips-cpc.c')
-rw-r--r--arch/mips/kernel/mips-cpc.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/arch/mips/kernel/mips-cpc.c b/arch/mips/kernel/mips-cpc.c
index 566b8d2c092c..2a45867d3b4f 100644
--- a/arch/mips/kernel/mips-cpc.c
+++ b/arch/mips/kernel/mips-cpc.c
@@ -52,7 +52,7 @@ static phys_addr_t mips_cpc_phys_base(void)
int mips_cpc_probe(void)
{
phys_addr_t addr;
- unsigned cpu;
+ unsigned int cpu;
for_each_possible_cpu(cpu)
spin_lock_init(&per_cpu(cpc_core_lock, cpu));
@@ -70,7 +70,12 @@ int mips_cpc_probe(void)
void mips_cpc_lock_other(unsigned int core)
{
- unsigned curr_core;
+ unsigned int curr_core;
+
+ if (mips_cm_revision() >= CM_REV_CM3)
+ /* Systems with CM >= 3 lock the CPC via mips_cm_lock_other */
+ return;
+
preempt_disable();
curr_core = current_cpu_data.core;
spin_lock_irqsave(&per_cpu(cpc_core_lock, curr_core),
@@ -86,7 +91,13 @@ void mips_cpc_lock_other(unsigned int core)
void mips_cpc_unlock_other(void)
{
- unsigned curr_core = current_cpu_data.core;
+ unsigned int curr_core;
+
+ if (mips_cm_revision() >= CM_REV_CM3)
+ /* Systems with CM >= 3 lock the CPC via mips_cm_lock_other */
+ return;
+
+ curr_core = current_cpu_data.core;
spin_unlock_irqrestore(&per_cpu(cpc_core_lock, curr_core),
per_cpu(cpc_core_lock_flags, curr_core));
preempt_enable();