riscv: Fix udelay in RV32.

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In RV32, udelay would delay the wrong cycle. When it shifts right
"UDELAY_SHIFT" 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 <nickhu@andestech.com>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
[paul.walmsley@sifive.com: fixed minor spelling error]
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>

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Nick Hu 2019-05-30 15:01:17 +08:00 • committed by Paul Walmsley

parent 405945588f

commit d0e1f2110a

1 changed files with 1 additions and 1 deletions

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arch/riscv/lib/delay.c

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