cxgb4: use unaligned conversion for fetching timestamp

[ Upstream commit 589b1c9c166dce120e27b32a83a78f55464a7ef9 ]

Use get_unaligned_be64() to fetch the timestamp needed for ns_to_ktime()
conversion.

Fixes following sparse warning:
sge.c:3282:43: warning: cast to restricted __be64

Fixes: a456950445a0 ("cxgb4: time stamping interface for PTP")
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c
index 3a45ac8f0e01141b04fcb41611162ca8dbb96079..506170fe3a8b7ff60bf8f5263742106abf071f05 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c
@@ -2816,7 +2816,7 @@ static noinline int t4_systim_to_hwstamp(struct adapter *adapter,
 
        hwtstamps = skb_hwtstamps(skb);
        memset(hwtstamps, 0, sizeof(*hwtstamps));
-       hwtstamps->hwtstamp = ns_to_ktime(be64_to_cpu(*((u64 *)data)));
+       hwtstamps->hwtstamp = ns_to_ktime(get_unaligned_be64(data));
 
        return RX_PTP_PKT_SUC;
 }