提交 6594b982 编写于 作者: S Steven Miao 提交者: Bob Liu

Blackfin: smp: add smp_mb() to keep coherency

After use generic smp helpers, smp_mb() should be added to keep coherency.
Signed-off-by: NSteven Miao <realmz6@gmail.com>
Signed-off-by: NBob Liu <lliubbo@gmail.com>
上级 4087af4c
......@@ -146,7 +146,7 @@ static irqreturn_t ipi_handler_int1(int irq, void *dev_instance)
platform_clear_ipi(cpu, IRQ_SUPPLE_1);
bfin_ipi_data = &__get_cpu_var(bfin_ipi);
smp_mb();
while ((pending = xchg(&bfin_ipi_data->bits, 0)) != 0) {
msg = 0;
do {
......@@ -195,7 +195,7 @@ void send_ipi(const struct cpumask *cpumask, enum ipi_message_type msg)
unsigned long flags;
local_irq_save(flags);
smp_mb();
for_each_cpu(cpu, cpumask) {
bfin_ipi_data = &per_cpu(bfin_ipi, cpu);
smp_mb();
......
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