[U-Boot] [PATCH 06/18] net: macb: Flush correct cache portion when sending

Simon Glass
2016-05-03T06:40:00Z

The end address of the cache flush must be cache-line-aligned since
otherwise (at least on ARM926-EJS) the request is ignored. When the cache
is enabled this means that packets are not sent.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

drivers/net/macb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/macb.c b/drivers/net/macb.c
index f0af40c..ecdfc1b 100644
--- a/drivers/net/macb.c
+++ b/drivers/net/macb.c
@@ -280,7 +280,7 @@ static int _macb_send(struct macb_device *macb, const char *name, void *packet,
barrier();
macb_flush_ring_desc(macb, TX);
/* Do we need check paddr and length is dcache line aligned? */
- flush_dcache_range(paddr, paddr + length);
+ flush_dcache_range(paddr, paddr + ALIGN(length, ARCH_DMA_MINALIGN));
macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE) | MACB_BIT(TSTART));

/*
--
2.8.0.rc3.226.g39d4020