From de306f0051ae947680a13c13a9fd9373d7460bb1 Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Fri, 11 Oct 2024 10:20:00 +0100 Subject: [PATCH] net: gianfar: Use __be64 * to store pointers to big endian values Timestamp values are read using pointers to 64-bit big endian values. But the type of these pointers is u64 *, host byte order. Use __be64 * instead. Flagged by Sparse: .../gianfar.c:2212:60: warning: cast to restricted __be64 .../gianfar.c:2475:53: warning: cast to restricted __be64 Introduced by commit cc772ab7cdca ("gianfar: Add hardware RX timestamping support"). Compile tested only. No functional change intended. Signed-off-by: Simon Horman Reviewed-by: Claudiu Manoil Link: https://patch.msgid.link/20241011-gianfar-be64-v1-1-a77ebe972176@kernel.org Signed-off-by: Paolo Abeni --- drivers/net/ethernet/freescale/gianfar.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c index 092db69958241..435138f4699d2 100644 --- a/drivers/net/ethernet/freescale/gianfar.c +++ b/drivers/net/ethernet/freescale/gianfar.c @@ -2207,8 +2207,9 @@ static void gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue) if (unlikely(do_tstamp)) { struct skb_shared_hwtstamps shhwtstamps; - u64 *ns = (u64 *)(((uintptr_t)skb->data + 0x10) & - ~0x7UL); + __be64 *ns; + + ns = (__be64 *)(((uintptr_t)skb->data + 0x10) & ~0x7UL); memset(&shhwtstamps, 0, sizeof(shhwtstamps)); shhwtstamps.hwtstamp = ns_to_ktime(be64_to_cpu(*ns)); @@ -2471,7 +2472,7 @@ static void gfar_process_frame(struct net_device *ndev, struct sk_buff *skb) /* Get receive timestamp from the skb */ if (priv->hwts_rx_en) { struct skb_shared_hwtstamps *shhwtstamps = skb_hwtstamps(skb); - u64 *ns = (u64 *) skb->data; + __be64 *ns = (__be64 *)skb->data; memset(shhwtstamps, 0, sizeof(*shhwtstamps)); shhwtstamps->hwtstamp = ns_to_ktime(be64_to_cpu(*ns));