[PATCH master 1/2] net: fsl-fman: fix alignment of RX buffer

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

The receive buffer needs to be cacheline aligned for cache maintenance
to avoid invalidating unrelated malloc memory. This was so far not the
case due to malloc's minimum alignment of 8-byte (with TLSF), so switch
to dma_alloc instead.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 drivers/net/fsl-fman.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/fsl-fman.c b/drivers/net/fsl-fman.c
index ff32fa8fc753..baafe027c079 100644
--- a/drivers/net/fsl-fman.c
+++ b/drivers/net/fsl-fman.c
@@ -620,9 +620,7 @@ static int fm_eth_rx_port_parameter_init(struct fm_eth *fm_eth)
 			* RX_BD_RING_SIZE);
 
 	/* alloc Rx buffer from main memory */
-	rx_buf_pool = malloc(MAX_RXBUF_LEN * RX_BD_RING_SIZE);
-	if (!rx_buf_pool)
-		return -ENOMEM;
+	rx_buf_pool = dma_alloc(MAX_RXBUF_LEN * RX_BD_RING_SIZE);
 
 	memset(rx_buf_pool, 0, MAX_RXBUF_LEN * RX_BD_RING_SIZE);
 
-- 
2.39.2