Replace the use of C bit-fields in the rmnet_map_dl_csum_trailer
structure with a single integral field, using field masks to
encode or get at sub-field values.

Signed-off-by: Alex Elder <[email protected]>
---
 drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h      | 6 ++++--
 drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c | 2 +-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h 
b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h
index f3231c26badd..fb1cdb4ec41f 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h
@@ -51,13 +51,15 @@ struct rmnet_map_header {
 
 struct rmnet_map_dl_csum_trailer {
        u8  reserved1;
-       u8  valid:1;
-       u8  reserved2:7;
+       u8  flags;              /* RMNET_MAP_DL_* */
        u16 csum_start_offset;
        u16 csum_length;
        __be16 csum_value;
 } __aligned(1);
 
+#define RMNET_MAP_DL_CSUM_VALID_FMASK  GENMASK(0, 0)
+#define RMNET_MAP_DL_RESERVED_FMASK    GENMASK(7, 1)
+
 struct rmnet_map_ul_csum_header {
        __be16 csum_start_offset;
        __be16 csum_info;       /* RMNET_MAP_UL_* */
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c 
b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
index 72b64114505a..a95111cdcd29 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
@@ -362,7 +362,7 @@ int rmnet_map_checksum_downlink_packet(struct sk_buff *skb, 
u16 len)
 
        csum_trailer = (struct rmnet_map_dl_csum_trailer *)(skb->data + len);
 
-       if (!csum_trailer->valid) {
+       if (!u8_get_bits(csum_trailer->flags, RMNET_MAP_DL_CSUM_VALID_FMASK)) {
                priv->stats.csum_valid_unset++;
                return -EINVAL;
        }
-- 
2.20.1

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