Pull cpuidle into release branch

[pandora-kernel.git] / arch / mips / kernel / genex.S

diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S
index 83843a2..e76a76b 100644 (file)
--- a/arch/mips/kernel/genex.S
+++ b/arch/mips/kernel/genex.S
@@ -128,6 +128,37 @@ handle_vcei:
 
        .align  5
 NESTED(handle_int, PT_SIZE, sp)
+#ifdef CONFIG_TRACE_IRQFLAGS
+       /*
+        * Check to see if the interrupted code has just disabled
+        * interrupts and ignore this interrupt for now if so.
+        *
+        * local_irq_disable() disables interrupts and then calls
+        * trace_hardirqs_off() to track the state. If an interrupt is taken
+        * after interrupts are disabled but before the state is updated
+        * it will appear to restore_all that it is incorrectly returning with
+        * interrupts disabled
+        */
+       .set    push
+       .set    noat
+       mfc0    k0, CP0_STATUS
+#if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
+       and     k0, ST0_IEP
+       bnez    k0, 1f
+
+       mfc0    k0, CP0_EPC
+       .set    noreorder
+       j       k0
+       rfe
+#else
+       and     k0, ST0_IE
+       bnez    k0, 1f
+
+       eret
+#endif
+1:
+       .set pop
+#endif
        SAVE_ALL
        CLI
        TRACE_IRQS_OFF
@@ -212,9 +243,11 @@ NESTED(except_vec_vi_handler, 0, sp)
         */
        mfc0    t1, CP0_STATUS
        and     t0, a0, t1
+#ifdef CONFIG_MIPS_MT_SMTC_IM_BACKSTOP
        mfc0    t2, CP0_TCCONTEXT
        or      t0, t0, t2
        mtc0    t0, CP0_TCCONTEXT
+#endif /* CONFIG_MIPS_MT_SMTC_IM_BACKSTOP */
        xor     t1, t1, t0
        mtc0    t1, CP0_STATUS
        _ehb