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-rw-r--r--drivers/cache/sifive_ccache.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/cache/sifive_ccache.c b/drivers/cache/sifive_ccache.c
index e1a283805ea7..a86800b123b9 100644
--- a/drivers/cache/sifive_ccache.c
+++ b/drivers/cache/sifive_ccache.c
@@ -151,16 +151,16 @@ static void ccache_flush_range(phys_addr_t start, size_t len)
if (!len)
return;
- mb();
+ mb(); /* complete earlier memory accesses before the cache flush */
for (line = ALIGN_DOWN(start, SIFIVE_CCACHE_LINE_SIZE); line < end;
line += SIFIVE_CCACHE_LINE_SIZE) {
#ifdef CONFIG_32BIT
- writel(line >> 4, ccache_base + SIFIVE_CCACHE_FLUSH32);
+ writel_relaxed(line >> 4, ccache_base + SIFIVE_CCACHE_FLUSH32);
#else
- writeq(line, ccache_base + SIFIVE_CCACHE_FLUSH64);
+ writeq_relaxed(line, ccache_base + SIFIVE_CCACHE_FLUSH64);
#endif
- mb();
}
+ mb(); /* issue later memory accesses after the cache flush */
}
static const struct riscv_nonstd_cache_ops ccache_mgmt_ops __initconst = {