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openmptcprouter/root/target/linux/ramips/patches-5.15/324-mt7621-perfctr-fix.patch
Ycarus (Yannick Chabanois) a85e86fe9c Add ubnt-erx 5.15 support
2021-12-01 21:16:24 +01:00

15 lines
355 B
Diff

--- a/arch/mips/ralink/irq-gic.c
+++ b/arch/mips/ralink/irq-gic.c
@@ -13,6 +13,12 @@
int get_c0_perfcount_int(void)
{
+ /*
+ * Performance counter events are routed through GIC.
+ * Prevent them from firing on CPU IRQ7 as well
+ */
+ clear_c0_status(IE_SW0 << 7);
+
return gic_get_c0_perfcount_int();
}
EXPORT_SYMBOL_GPL(get_c0_perfcount_int);