diff options
Diffstat (limited to 'target/linux/ifxmips/patches-2.6.33/000-mips-bad-intctl.patch')
| -rw-r--r-- | target/linux/ifxmips/patches-2.6.33/000-mips-bad-intctl.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/target/linux/ifxmips/patches-2.6.33/000-mips-bad-intctl.patch b/target/linux/ifxmips/patches-2.6.33/000-mips-bad-intctl.patch new file mode 100644 index 0000000000..efecbf1f75 --- /dev/null +++ b/target/linux/ifxmips/patches-2.6.33/000-mips-bad-intctl.patch @@ -0,0 +1,39 @@ +Index: linux-2.6.33.2/arch/mips/kernel/traps.c +=================================================================== +--- linux-2.6.33.2.orig/arch/mips/kernel/traps.c 2010-04-02 01:02:33.000000000 +0200 ++++ linux-2.6.33.2/arch/mips/kernel/traps.c 2010-04-02 23:36:16.000000000 +0200 +@@ -1496,7 +1496,18 @@ + if (cpu_has_mips_r2) { + cp0_compare_irq_shift = CAUSEB_TI - CAUSEB_IP; + cp0_compare_irq = (read_c0_intctl() >> INTCTLB_IPTI) & 7; ++ ++ if (!cp0_compare_irq) ++ cp0_compare_irq = CP0_LEGACY_COMPARE_IRQ; ++ + cp0_perfcount_irq = (read_c0_intctl() >> INTCTLB_IPPCI) & 7; ++ ++ if (!cp0_perfcount_irq) ++ cp0_perfcount_irq = CP0_LEGACY_PERFCNT_IRQ; ++ ++ if (arch_fixup_c0_irqs) ++ arch_fixup_c0_irqs(); ++ + if (cp0_perfcount_irq == cp0_compare_irq) + cp0_perfcount_irq = -1; + } else { +Index: linux-2.6.33.2/arch/mips/include/asm/irq.h +=================================================================== +--- linux-2.6.33.2.orig/arch/mips/include/asm/irq.h 2010-04-02 01:02:33.000000000 +0200 ++++ linux-2.6.33.2/arch/mips/include/asm/irq.h 2010-04-02 23:37:14.000000000 +0200 +@@ -133,9 +133,11 @@ + * IE7. Since R2 their number has to be read from the c0_intctl register. + */ + #define CP0_LEGACY_COMPARE_IRQ 7 ++#define CP0_LEGACY_PERFCNT_IRQ 7 + + extern int cp0_compare_irq; + extern int cp0_compare_irq_shift; + extern int cp0_perfcount_irq; ++extern void __weak arch_fixup_c0_irqs(void); + + #endif /* _ASM_IRQ_H */ |