These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / arch / mips / mti-malta / malta-time.c

diff --git a/kernel/arch/mips/mti-malta/malta-time.c b/kernel/arch/mips/mti-malta/malta-time.c
index a7f7d9f..b7bf721 100644 (file)
--- a/kernel/arch/mips/mti-malta/malta-time.c
+++ b/kernel/arch/mips/mti-malta/malta-time.c
@@ -119,18 +119,24 @@ void read_persistent_clock(struct timespec *ts)
 
 int get_c0_fdc_int(void)
 {
-       int mips_cpu_fdc_irq;
+       /*
+        * Some cores claim the FDC is routable through the GIC, but it doesn't
+        * actually seem to be connected for those Malta bitstreams.
+        */
+       switch (current_cpu_type()) {
+       case CPU_INTERAPTIV:
+       case CPU_PROAPTIV:
+               return -1;
+       };
 
        if (cpu_has_veic)
-               mips_cpu_fdc_irq = -1;
+               return -1;
        else if (gic_present)
-               mips_cpu_fdc_irq = gic_get_c0_fdc_int();
+               return gic_get_c0_fdc_int();
        else if (cp0_fdc_irq >= 0)
-               mips_cpu_fdc_irq = MIPS_CPU_IRQ_BASE + cp0_fdc_irq;
+               return MIPS_CPU_IRQ_BASE + cp0_fdc_irq;
        else
-               mips_cpu_fdc_irq = -1;
-
-       return mips_cpu_fdc_irq;
+               return -1;
 }
 
 int get_c0_perfcount_int(void)