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mirror of git://projects.qi-hardware.com/openwrt-xburst.git synced 2024-12-12 00:03:44 +02:00
openwrt-xburst/target/linux/ifxmips/patches-2.6.33/000-mips-bad-intctl.patch
juhosg 6983aacd37 kernel: refresh patches for 2.6.33.2, and drop md5sum for older 2.6.32 kernels
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@21081 3c298f89-4303-0410-b956-a3cf2f4a3e73
2010-04-22 07:12:09 +00:00

36 lines
1.0 KiB
Diff

--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -1496,7 +1496,18 @@ void __cpuinit per_cpu_trap_init(void)
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 {
--- a/arch/mips/include/asm/irq.h
+++ b/arch/mips/include/asm/irq.h
@@ -133,9 +133,11 @@ extern void free_irqno(unsigned int irq)
* 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 */