cpsw tries to flush dcache which is not in the range of cache line size.
Because of this the following warning comes while flushing:
CACHE: Misaligned operation at range [dffecec0, dffed016]
Fix it by flushing cache range which is cache line size aligned.
Signed-off-by: Lokesh Vutla <lokeshvu...@ti.com>
---
drivers/net/cpsw.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/net/cpsw.c b/drivers/net/cpsw.c
index 2ce4ec6..631544a 100644
--- a/drivers/net/cpsw.c
+++ b/drivers/net/cpsw.c
@@ -905,9 +905,14 @@ static int _cpsw_send(struct cpsw_priv *priv, void
*packet, int length)
void *buffer;
int len;
int timeout = CPDMA_TIMEOUT;
+ unsigned long pstart, pend;
- flush_dcache_range((unsigned long)packet,
- (unsigned long)packet + length);
+ /*
+ * Make sure range is cache line aligned.
+ */
+ pstart = (unsigned long)packet & ~(CONFIG_SYS_CACHELINE_SIZE - 1);
+ pend = ALIGN((unsigned long)packet + length, CONFIG_SYS_CACHELINE_SIZE);
+ flush_dcache_range(pstart, pend);
/* first reap completed packets */
while (timeout-- &&
--
2.9.2
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