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Diffstat (limited to 'target/linux/ifxmips/patches-2.6.32/000-mips-bad-intctl.patch')
-rw-r--r--target/linux/ifxmips/patches-2.6.32/000-mips-bad-intctl.patch36
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/ifxmips/patches-2.6.32/000-mips-bad-intctl.patch b/target/linux/ifxmips/patches-2.6.32/000-mips-bad-intctl.patch
new file mode 100644
index 0000000000..bd1b399c12
--- /dev/null
+++ b/target/linux/ifxmips/patches-2.6.32/000-mips-bad-intctl.patch
@@ -0,0 +1,36 @@
+Index: linux-2.6.30.5/arch/mips/kernel/traps.c
+===================================================================
+--- linux-2.6.30.5.orig/arch/mips/kernel/traps.c 2009-08-16 23:19:38.000000000 +0200
++++ linux-2.6.30.5/arch/mips/kernel/traps.c 2009-09-02 18:23:37.000000000 +0200
+@@ -1542,7 +1542,16 @@
+ */
+ 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 {
+Index: linux-2.6.30.5/arch/mips/include/asm/irq.h
+===================================================================
+--- linux-2.6.30.5.orig/arch/mips/include/asm/irq.h 2009-09-02 18:24:49.000000000 +0200
++++ linux-2.6.30.5/arch/mips/include/asm/irq.h 2009-09-02 18:26:05.000000000 +0200
+@@ -157,8 +157,10 @@
+ * 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 */