target/linux/ifxmips/patches-2.6.30/000-mips-bad-intctl.patch

   1 Index: linux-2.6.30.5/arch/mips/kernel/traps.c
   2 ===================================================================
   3 --- linux-2.6.30.5.orig/arch/mips/kernel/traps.c        2009-08-16 23:19:38.000000000 +0200
   4 +++ linux-2.6.30.5/arch/mips/kernel/traps.c     2009-09-02 18:23:37.000000000 +0200
   5 @@ -1542,7 +1542,16 @@
   6          */
   7         if (cpu_has_mips_r2) {
   8                 cp0_compare_irq = (read_c0_intctl() >> 29) & 7;
   9 +               if (!cp0_compare_irq)
  10 +                       cp0_compare_irq = CP0_LEGACY_COMPARE_IRQ;
  11 +
  12                 cp0_perfcount_irq = (read_c0_intctl() >> 26) & 7;
  13 +               if (!cp0_perfcount_irq)
  14 +                       cp0_perfcount_irq = CP0_LEGACY_PERFCNT_IRQ;
  15 +
  16 +               if (arch_fixup_c0_irqs)
  17 +                       arch_fixup_c0_irqs();
  18 +
  19                 if (cp0_perfcount_irq == cp0_compare_irq)
  20                         cp0_perfcount_irq = -1;
  21         } else {
  22 Index: linux-2.6.30.5/arch/mips/include/asm/irq.h
  23 ===================================================================
  24 --- linux-2.6.30.5.orig/arch/mips/include/asm/irq.h     2009-09-02 18:24:49.000000000 +0200
  25 +++ linux-2.6.30.5/arch/mips/include/asm/irq.h  2009-09-02 18:26:05.000000000 +0200
  26 @@ -157,8 +157,10 @@
  27   * IE7.  Since R2 their number has to be read from the c0_intctl register.
  28   */
  29  #define CP0_LEGACY_COMPARE_IRQ 7
  30 +#define CP0_LEGACY_PERFCNT_IRQ 7
  31
  32  extern int cp0_compare_irq;
  33  extern int cp0_perfcount_irq;
  34 +extern void __weak arch_fixup_c0_irqs(void);
  35
  36  #endif /* _ASM_IRQ_H */