Commit dc344589 authored by Yao Cheng's avatar Yao Cheng Committed by Shinya Kuribayashi
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MIPS: mips32: fix wrong loop bound in flush_cache()

The issue is found when calling flush_cache() with zero "size" argument.
The bound of loop is miscalculated in this case and flush_cache() enters
a wrong flushing loop.
Signed-off-by: default avatarYao Cheng <>
Cc: Shinya Kuribayashi <>
Cc: Sergei Shtylyov <>
Cc: Mike Frysinger <>
Signed-off-by: default avatarShinya Kuribayashi <>
parent a1118d60
......@@ -56,6 +56,10 @@ void flush_cache(ulong start_addr, ulong size)
unsigned long addr = start_addr & ~(lsize - 1);
unsigned long aend = (start_addr + size - 1) & ~(lsize - 1);
/* aend will be miscalculated when size is zero, so we return here */
if (size == 0)
while (1) {
cache_op(Hit_Writeback_Inv_D, addr);
cache_op(Hit_Invalidate_I, addr);
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