提交 016f98af 编写于 作者: W Will Deacon 提交者: Marc Zyngier

irqchip/gic-v3: Use nops macro for Cavium ThunderX erratum 23154

The workaround for Cavium ThunderX erratum 23154 has a homebrew
pipeflush built out of NOP sequences around the read of the IAR.

This patch converts the code to use the new nops macro, which makes it
a little easier to read.
Reviewed-by: NMark Rutland <mark.rutland@arm.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>
Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
上级 d44ffa5a
......@@ -122,14 +122,9 @@ static inline u64 gic_read_iar_cavium_thunderx(void)
{
u64 irqstat;
asm volatile(
"nop;nop;nop;nop\n\t"
"nop;nop;nop;nop");
nops(8);
irqstat = read_sysreg_s(ICC_IAR1_EL1);
asm volatile(
"nop;nop;nop;nop");
nops(4);
mb();
return irqstat;
......
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