target/linux/ifxmips/patches-2.6.33/000-mips-bad-intctl.patch

   1 Index: linux-2.6.33.2/arch/mips/kernel/traps.c
   2 ===================================================================
   3 --- linux-2.6.33.2.orig/arch/mips/kernel/traps.c        2010-04-02 01:02:33.000000000 +0200
   4 +++ linux-2.6.33.2/arch/mips/kernel/traps.c     2010-04-02 23:36:16.000000000 +0200
   5 @@ -1496,7 +1496,18 @@
   6         if (cpu_has_mips_r2) {
   7                 cp0_compare_irq_shift = CAUSEB_TI - CAUSEB_IP;
   8                 cp0_compare_irq = (read_c0_intctl() >> INTCTLB_IPTI) & 7;
   9 +
  10 +               if (!cp0_compare_irq)
  11 +                       cp0_compare_irq = CP0_LEGACY_COMPARE_IRQ;
  12 +
  13                 cp0_perfcount_irq = (read_c0_intctl() >> INTCTLB_IPPCI) & 7;
  14 +
  15 +               if (!cp0_perfcount_irq)
  16 +                       cp0_perfcount_irq = CP0_LEGACY_PERFCNT_IRQ;
  17 +
  18 +               if (arch_fixup_c0_irqs)
  19 +                       arch_fixup_c0_irqs();
  20 +
  21                 if (cp0_perfcount_irq == cp0_compare_irq)
  22                         cp0_perfcount_irq = -1;
  23         } else {
  24 Index: linux-2.6.33.2/arch/mips/include/asm/irq.h
  25 ===================================================================
  26 --- linux-2.6.33.2.orig/arch/mips/include/asm/irq.h     2010-04-02 01:02:33.000000000 +0200
  27 +++ linux-2.6.33.2/arch/mips/include/asm/irq.h  2010-04-02 23:37:14.000000000 +0200
  28 @@ -133,9 +133,11 @@
  29   * IE7.  Since R2 their number has to be read from the c0_intctl register.
  30   */
  31  #define CP0_LEGACY_COMPARE_IRQ 7
  32 +#define CP0_LEGACY_PERFCNT_IRQ 7
  33
  34  extern int cp0_compare_irq;
  35  extern int cp0_compare_irq_shift;
  36  extern int cp0_perfcount_irq;
  37 +extern void __weak arch_fixup_c0_irqs(void);
  38
  39  #endif /* _ASM_IRQ_H */