commit 08b3e90a0168c9053c9bdd7df5d187cb6668a4c6
author Cédric Le Goater <clg@kaod.org> Thu Nov 28 13:37:04 2019 +0100
committer Joe Hershberger <joe.hershberger@ni.com> Mon Dec 09 09:47:43 2019 -0600
tree b12289cec6fae1f65ee14cd7a5b7950933525687
parent 1e354cb3931472c6e88aa6c46d4bda9beddfdcc4

net: ftgmac100: align RX/TX descriptors on ARCH_DMA_MINALIGN

Fixes: e766849713ff ("net: ftgmac100: convert the RX/TX descriptor arrays")
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

drivers/net/ftgmac100.c

diff --git a/drivers/net/ftgmac100.c b/drivers/net/ftgmac100.c
index b6b8a93..ebb7433 100644
--- a/drivers/net/ftgmac100.c
+++ b/drivers/net/ftgmac100.c
@@ -72,8 +72,8 @@
 struct ftgmac100_data {
 	struct ftgmac100 *iobase;
 
-	struct ftgmac100_txdes txdes[PKTBUFSTX];
-	struct ftgmac100_rxdes rxdes[PKTBUFSRX];
+	struct ftgmac100_txdes txdes[PKTBUFSTX] __aligned(ARCH_DMA_MINALIGN);
+	struct ftgmac100_rxdes rxdes[PKTBUFSRX] __aligned(ARCH_DMA_MINALIGN);
 	int tx_index;
 	int rx_index;
 
@@ -310,7 +310,7 @@
 	}
 	priv->txdes[PKTBUFSTX - 1].txdes0 = priv->txdes0_edotr_mask;
 
-	start = (ulong)&priv->txdes[0];
+	start = ((ulong)&priv->txdes[0]) & ~(ARCH_DMA_MINALIGN - 1);
 	end = start + roundup(sizeof(priv->txdes), ARCH_DMA_MINALIGN);
 	flush_dcache_range(start, end);
 
@@ -320,7 +320,7 @@
 	}
 	priv->rxdes[PKTBUFSRX - 1].rxdes0 = priv->rxdes0_edorr_mask;
 
-	start = (ulong)&priv->rxdes[0];
+	start = ((ulong)&priv->rxdes[0]) & ~(ARCH_DMA_MINALIGN - 1);
 	end = start + roundup(sizeof(priv->rxdes), ARCH_DMA_MINALIGN);
 	flush_dcache_range(start, end);
 
@@ -370,7 +370,7 @@
 {
 	struct ftgmac100_data *priv = dev_get_priv(dev);
 	struct ftgmac100_rxdes *curr_des = &priv->rxdes[priv->rx_index];
-	ulong des_start = (ulong)curr_des;
+	ulong des_start = ((ulong)curr_des) & ~(ARCH_DMA_MINALIGN - 1);
 	ulong des_end = des_start +
 		roundup(sizeof(*curr_des), ARCH_DMA_MINALIGN);
 
@@ -392,7 +392,7 @@
 	struct ftgmac100_data *priv = dev_get_priv(dev);
 	struct ftgmac100_rxdes *curr_des = &priv->rxdes[priv->rx_index];
 	unsigned short rxlen;
-	ulong des_start = (ulong)curr_des;
+	ulong des_start = ((ulong)curr_des) & ~(ARCH_DMA_MINALIGN - 1);
 	ulong des_end = des_start +
 		roundup(sizeof(*curr_des), ARCH_DMA_MINALIGN);
 	ulong data_start = curr_des->rxdes3;
@@ -427,7 +427,7 @@
 static u32 ftgmac100_read_txdesc(const void *desc)
 {
 	const struct ftgmac100_txdes *txdes = desc;
-	ulong des_start = (ulong)txdes;
+	ulong des_start = ((ulong)txdes) & ~(ARCH_DMA_MINALIGN - 1);
 	ulong des_end = des_start + roundup(sizeof(*txdes), ARCH_DMA_MINALIGN);
 
 	invalidate_dcache_range(des_start, des_end);
@@ -445,7 +445,7 @@
 	struct ftgmac100_data *priv = dev_get_priv(dev);
 	struct ftgmac100 *ftgmac100 = priv->iobase;
 	struct ftgmac100_txdes *curr_des = &priv->txdes[priv->tx_index];
-	ulong des_start = (ulong)curr_des;
+	ulong des_start = ((ulong)curr_des) & ~(ARCH_DMA_MINALIGN - 1);
 	ulong des_end = des_start +
 		roundup(sizeof(*curr_des), ARCH_DMA_MINALIGN);
 	ulong data_start;