Re: [PATCH v2] riscv: Fix udelay in RV32.

On Thu, May 30, 2019 at 02:49:10PM +0800, Nick Chun-Ming Hu(胡峻銘) wrote: > In RV32, udelay would delay the wrong cycle. When it shifts right > "UDELAY_SHITFT" bits, it either delays 0 cycle or 1 cycle. It only works > correctly in RV64. Because the 'ucycles' always needs to be 64 bits > variable. >

[PATCH v2] riscv: Fix udelay in RV32.

In RV32, udelay would delay the wrong cycle. When it shifts right "UDELAY_SHITFT" bits, it either delays 0 cycle or 1 cycle. It only works correctly in RV64. Because the 'ucycles' always needs to be 64 bits variable. Signed-off-by: Nick Hu --- arch/riscv/lib/delay.c | 2 +- 1 file changed, 1