[PATCH 08/15] net: sun8i_emac: Drop unneeded cache invalidation before sending

Andre Przywara andre.przywara at arm.com
Mon Jul 6 02:40:39 CEST 2020


There is no reason to invalidate a TX descriptor before we are setting
it up, as we will only write to a field.

Remove the not needed invalidate_dcache_range() call.

Signed-off-by: Andre Przywara <andre.przywara at arm.com>
---
 drivers/net/sun8i_emac.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/net/sun8i_emac.c b/drivers/net/sun8i_emac.c
index 38c56bde70..b704ec47a3 100644
--- a/drivers/net/sun8i_emac.c
+++ b/drivers/net/sun8i_emac.c
@@ -624,9 +624,6 @@ static int sun8i_emac_eth_send(struct udevice *dev, void *packet, int length)
 	uintptr_t data_end = data_start +
 		roundup(length, ARCH_DMA_MINALIGN);
 
-	/* Invalidate entire buffer descriptor */
-	invalidate_dcache_range(desc_start, desc_end);
-
 	desc_p->ctl_size = length | EMAC_DESC_CHAIN_SECOND;
 
 	memcpy((void *)data_start, packet, length);
-- 
2.17.5



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