diff options
| author | Ingo Molnar <[email protected]> | 2016-10-16 11:31:39 +0200 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2016-10-16 11:31:39 +0200 |
| commit | 1d33369db25eb7f37b7a8bd22d736888b4501a9c (patch) | |
| tree | 116d764339be1bca928870151decbedc53a9e1d1 /arch/mips/kernel/mips-cpc.c | |
| parent | 23446cb66c073b827779e5eb3dec301623299b32 (diff) | |
| parent | 1001354ca34179f3db924eb66672442a173147dc (diff) | |
Merge tag 'v4.9-rc1' into x86/urgent, to pick up updates
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'arch/mips/kernel/mips-cpc.c')
| -rw-r--r-- | arch/mips/kernel/mips-cpc.c | 17 |
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(); |