Nick Hu ddf4972834 riscv: Avoid io read/write cause wrong result ... io read/write may cause wrong result because they may read/write data from/to register instead of memory. Add 'volatile' to avoid it. Signed-off-by: Nick Hu <nick.hu@sifive.com> Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>		2021-10-20 10:59:17 +08:00
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asm	riscv: Avoid io read/write cause wrong result	2021-10-20 10:59:17 +08:00