add .32 patches

SVN-Revision: 21150

1 files changed, 35 insertions, 0 deletions

diff --git a/target/linux/ifxmips/patches-2.6.32/010-mips_clocksource_init_war.patch b/target/linux/ifxmips/patches-2.6.32/010-mips_clocksource_init_war.patch
new file mode 100644
index 0000000000..15fd78f4e6
--- /dev/null
+++ b/target/linux/ifxmips/patches-2.6.32/010-mips_clocksource_init_war.patch
@@ -0,0 +1,35 @@
+Index: linux-2.6.32.10/arch/mips/kernel/cevt-r4k.c
+===================================================================
+--- linux-2.6.32.10.orig/arch/mips/kernel/cevt-r4k.c	2010-04-02 21:11:39.000000000 +0200
++++ linux-2.6.32.10/arch/mips/kernel/cevt-r4k.c	2010-04-02 21:11:52.000000000 +0200
+@@ -22,6 +22,22 @@
+ 
+ #ifndef CONFIG_MIPS_MT_SMTC
+ 
++/*
++ * Compare interrupt can be routed and latched outside the core,
++ * so a single execution hazard barrier may not be enough to give
++ * it time to clear as seen in the Cause register.  4 time the
++ * pipeline depth seems reasonably conservative, and empirically
++ * works better in configurations with high CPU/bus clock ratios.
++ */
++
++#define compare_change_hazard() \
++	do { \
++		irq_disable_hazard(); \
++		irq_disable_hazard(); \
++		irq_disable_hazard(); \
++		irq_disable_hazard(); \
++	} while (0)
++
+ static int mips_next_event(unsigned long delta,
+                            struct clock_event_device *evt)
+ {
+@@ -31,6 +47,7 @@
+ 	cnt = read_c0_count();
+ 	cnt += delta;
+ 	write_c0_compare(cnt);
++	compare_change_hazard();
+ 	res = ((int)(read_c0_count() - cnt) > 0) ? -ETIME : 0;
+ 	return res;
+ }