X-Git-Url: http://git.ozo.com/?a=blobdiff_plain;f=target%2Flinux%2Fifxmips%2Fpatches-2.6.28%2F000-mips-bad-intctl.patch;fp=target%2Flinux%2Fifxmips%2Fpatches-2.6.28%2F000-mips-bad-intctl.patch;h=22f7e0c752d983fe4930d9d2cb278b1c293d57cd;hb=1d3e394ebecc98074687a56454489b7cd59e3c03;hp=0000000000000000000000000000000000000000;hpb=7d570ded94cb1c8c23bb3f190ffd0d530dfb26e5;p=openwrt-10.03%2F.git

diff --git a/target/linux/ifxmips/patches-2.6.28/000-mips-bad-intctl.patch b/target/linux/ifxmips/patches-2.6.28/000-mips-bad-intctl.patch
new file mode 100644
index 000000000..22f7e0c75
--- /dev/null
+++ b/target/linux/ifxmips/patches-2.6.28/000-mips-bad-intctl.patch
@@ -0,0 +1,34 @@
+--- a/arch/mips/kernel/traps.c
++++ b/arch/mips/kernel/traps.c
+@@ -1514,7 +1514,16 @@ void __cpuinit per_cpu_trap_init(void)
+ 	 */
+ 	if (cpu_has_mips_r2) {
+ 		cp0_compare_irq = (read_c0_intctl() >> 29) & 7;
++		if (!cp0_compare_irq)
++			cp0_compare_irq = CP0_LEGACY_COMPARE_IRQ;
++
+ 		cp0_perfcount_irq = (read_c0_intctl() >> 26) & 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
+@@ -156,8 +156,12 @@ 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_perfcount_irq;
+ 
++extern void __weak arch_fixup_c0_irqs(void);
++
++
+ #endif /* _ASM_IRQ_H */