Commit 95b12dc1 authored by Michael Chan's avatar Michael Chan Committed by Greg Kroah-Hartman

bnxt_en: Fix TX push operation on ARM64.

[ Upstream commit 9d13744b ]

There is a code path where we are calling __iowrite64_copy() on
an address that is not 64-bit aligned.  This causes an exception on
some architectures such as arm64.  Fix that code path by using
__iowrite32_copy().
Reported-by: default avatarJD Zheng <jiandong.zheng@broadcom.com>
Signed-off-by: default avatarMichael Chan <michael.chan@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent e4a409d4
...@@ -293,8 +293,8 @@ static netdev_tx_t bnxt_start_xmit(struct sk_buff *skb, struct net_device *dev) ...@@ -293,8 +293,8 @@ static netdev_tx_t bnxt_start_xmit(struct sk_buff *skb, struct net_device *dev)
push_len = (length + sizeof(*tx_push) + 7) / 8; push_len = (length + sizeof(*tx_push) + 7) / 8;
if (push_len > 16) { if (push_len > 16) {
__iowrite64_copy(txr->tx_doorbell, tx_push_buf, 16); __iowrite64_copy(txr->tx_doorbell, tx_push_buf, 16);
__iowrite64_copy(txr->tx_doorbell + 4, tx_push_buf + 1, __iowrite32_copy(txr->tx_doorbell + 4, tx_push_buf + 1,
push_len - 16); (push_len - 16) << 1);
} else { } else {
__iowrite64_copy(txr->tx_doorbell, tx_push_buf, __iowrite64_copy(txr->tx_doorbell, tx_push_buf,
push_len); push_len);
......
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