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