linux-kernel - [PATCH 4.16 093/161] staging: fsl-dpaa2/eth: Fix incorrect casts

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Message-Id: <20180524093029.568570633@linuxfoundation.org>
Date:   Thu, 24 May 2018 11:38:38 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Ioana Radulescu <ruxandra.radulescu@....com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.16 093/161] staging: fsl-dpaa2/eth: Fix incorrect casts

4.16-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ioana Radulescu <ruxandra.radulescu@....com>

[ Upstream commit 75c583ab9709692a60871d4719006391cde8dc1d ]

The DPAA2 Ethernet driver incorrectly assumes virtual addresses
are always 64b long, which causes compiler errors when building
for a 32b platform.

Fix this by using explicit casts to uintptr_t where necessary.

Signed-off-by: Ioana Radulescu <ruxandra.radulescu@....com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
+++ b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
@@ -324,7 +324,7 @@ static int consume_frames(struct dpaa2_e
 		}
 
 		fd = dpaa2_dq_fd(dq);
-		fq = (struct dpaa2_eth_fq *)dpaa2_dq_fqd_ctx(dq);
+		fq = (struct dpaa2_eth_fq *)(uintptr_t)dpaa2_dq_fqd_ctx(dq);
 		fq->stats.frames++;
 
 		fq->consume(priv, ch, fd, &ch->napi, fq->flowid);
@@ -1908,7 +1908,7 @@ static int setup_rx_flow(struct dpaa2_et
 	queue.destination.id = fq->channel->dpcon_id;
 	queue.destination.type = DPNI_DEST_DPCON;
 	queue.destination.priority = 1;
-	queue.user_context = (u64)fq;
+	queue.user_context = (u64)(uintptr_t)fq;
 	err = dpni_set_queue(priv->mc_io, 0, priv->mc_token,
 			     DPNI_QUEUE_RX, 0, fq->flowid,
 			     DPNI_QUEUE_OPT_USER_CTX | DPNI_QUEUE_OPT_DEST,
@@ -1960,7 +1960,7 @@ static int setup_tx_flow(struct dpaa2_et
 	queue.destination.id = fq->channel->dpcon_id;
 	queue.destination.type = DPNI_DEST_DPCON;
 	queue.destination.priority = 0;
-	queue.user_context = (u64)fq;
+	queue.user_context = (u64)(uintptr_t)fq;
 	err = dpni_set_queue(priv->mc_io, 0, priv->mc_token,
 			     DPNI_QUEUE_TX_CONFIRM, 0, fq->flowid,
 			     DPNI_QUEUE_OPT_USER_CTX | DPNI_QUEUE_OPT_DEST,