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--- a/include/asm-mips/hazards.h
+++ b/include/asm-mips/hazards.h
@@ -64,7 +64,7 @@
_ehb
)
ASMMACRO(back_to_back_c0_hazard,
- _ehb
+ _ssnop; _ssnop; _ssnop; _ehb
)
/*
* gcc has a tradition of misscompiling the previous construct using the
--- a/arch/mips/kernel/cevt-r4k.c
+++ b/arch/mips/kernel/cevt-r4k.c
@@ -187,7 +187,7 @@
*/
if (c0_compare_int_pending()) {
write_c0_compare(read_c0_count());
- irq_disable_hazard();
+ back_to_back_c0_hazard();
if (c0_compare_int_pending())
return 0;
}
@@ -196,7 +196,7 @@
cnt = read_c0_count();
cnt += delta;
write_c0_compare(cnt);
- irq_disable_hazard();
+ back_to_back_c0_hazard();
if ((int)(read_c0_count() - cnt) < 0)
break;
/* increase delta if the timer was already expired */
@@ -205,11 +205,12 @@
while ((int)(read_c0_count() - cnt) <= 0)
; /* Wait for expiry */
+ back_to_back_c0_hazard();
if (!c0_compare_int_pending())
return 0;
write_c0_compare(read_c0_count());
- irq_disable_hazard();
+ back_to_back_c0_hazard();
if (c0_compare_int_pending())
return 0;
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