bna: use container_of to resolve bufdesc_ex from bufdesc

Use container_of instead of casting first structure member.

Compiled but untested.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 8 insertions, 5 deletions

diff --git a/drivers/net/ethernet/brocade/bna/bna_enet.c b/drivers/net/ethernet/brocade/bna/bna_enet.c
index 13f9636cdba7..903466ef41c0 100644
--- a/drivers/net/ethernet/brocade/bna/bna_enet.c
+++ b/drivers/net/ethernet/brocade/bna/bna_enet.c
@@ -107,7 +107,8 @@ bna_bfi_ethport_admin_rsp(struct bna_ethport *ethport,
 {
         struct bfi_enet_enable_req *admin_req =
                 &ethport->bfi_enet_cmd.admin_req;
-        struct bfi_enet_rsp *rsp = (struct bfi_enet_rsp *)msghdr;
+        struct bfi_enet_rsp *rsp =
+                container_of(msghdr, struct bfi_enet_rsp, mh);
 
         switch (admin_req->enable) {
         case BNA_STATUS_T_ENABLED:
@@ -133,7 +134,8 @@ bna_bfi_ethport_lpbk_rsp(struct bna_ethport *ethport,
 {
         struct bfi_enet_diag_lb_req *diag_lb_req =
                 &ethport->bfi_enet_cmd.lpbk_req;
-        struct bfi_enet_rsp *rsp = (struct bfi_enet_rsp *)msghdr;
+        struct bfi_enet_rsp *rsp =
+                container_of(msghdr, struct bfi_enet_rsp, mh);
 
         switch (diag_lb_req->enable) {
         case BNA_STATUS_T_ENABLED:
@@ -161,7 +163,8 @@ static void
 bna_bfi_attr_get_rsp(struct bna_ioceth *ioceth,
                         struct bfi_msgq_mhdr *msghdr)
 {
-        struct bfi_enet_attr_rsp *rsp = (struct bfi_enet_attr_rsp *)msghdr;
+        struct bfi_enet_attr_rsp *rsp =
+                container_of(msghdr, struct bfi_enet_attr_rsp, mh);
 
         /**
          * Store only if not set earlier, since BNAD can override the HW
diff --git a/drivers/net/ethernet/brocade/bna/bna_tx_rx.c b/drivers/net/ethernet/brocade/bna/bna_tx_rx.c
index 85e63546abe3..8ee3fdcc17cd 100644
--- a/drivers/net/ethernet/brocade/bna/bna_tx_rx.c
+++ b/drivers/net/ethernet/brocade/bna/bna_tx_rx.c
@@ -715,7 +715,7 @@ bna_bfi_rxf_ucast_set_rsp(struct bna_rxf *rxf,
                         struct bfi_msgq_mhdr *msghdr)
 {
         struct bfi_enet_rsp *rsp =
-                (struct bfi_enet_rsp *)msghdr;
+                container_of(msghdr, struct bfi_enet_rsp, mh);
 
         if (rsp->error) {
                 /* Clear ucast from cache */
@@ -732,7 +732,7 @@ bna_bfi_rxf_mcast_add_rsp(struct bna_rxf *rxf,
         struct bfi_enet_mcast_add_req *req =
                 &rxf->bfi_enet_cmd.mcast_add_req;
         struct bfi_enet_mcast_add_rsp *rsp =
-                (struct bfi_enet_mcast_add_rsp *)msghdr;
+                container_of(msghdr, struct bfi_enet_mcast_add_rsp, mh);
 
         bna_rxf_mchandle_attach(rxf, (u8 *)&req->mac_addr,
                 ntohs(rsp->handle));