alpha: irq: run all handlers with interrupts disabled

[linux-drm-fsl-dcu.git] / arch / alpha / kernel / irq_alpha.c

diff --git a/arch/alpha/kernel/irq_alpha.c b/arch/alpha/kernel/irq_alpha.c
index 772ddfdb71a8e67af8f20e38ff7f8def9af3b943..1216dfb4fcc58a0e812be9c80df6cd8495ec28b2 100644 (file)
--- a/arch/alpha/kernel/irq_alpha.c
+++ b/arch/alpha/kernel/irq_alpha.c
@@ -45,6 +45,14 @@ do_entInt(unsigned long type, unsigned long vector,
          unsigned long la_ptr, struct pt_regs *regs)
 {
        struct pt_regs *old_regs;
+
+       /*
+        * Disable interrupts during IRQ handling.
+        * Note that there is no matching local_irq_enable() due to
+        * severe problems with RTI at IPL0 and some MILO PALcode
+        * (namely LX164).
+        */
+       local_irq_disable();
        switch (type) {
        case 0:
 #ifdef CONFIG_SMP
@@ -62,7 +70,6 @@ do_entInt(unsigned long type, unsigned long vector,
          {
                long cpu;
 
-               local_irq_disable();
                smp_percpu_timer_interrupt(regs);
                cpu = smp_processor_id();
                if (cpu != boot_cpuid) {