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Subject[PATCH net-next] cnic: Refactor code and mark expected switch fall-through
In preparation to enabling -Wimplicit-fallthrough, refactor code a
bit and mark switch cases where we are expecting to fall through.

This patch fixes the following warning:

drivers/net/ethernet/broadcom/cnic.c: In function ‘cnic_cm_process_kcqe’:
drivers/net/ethernet/broadcom/cnic.c:4044:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
opcode = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
drivers/net/ethernet/broadcom/cnic.c:4050:2: note: here
case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
^~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

Notice that, in this particular case, the code comment is modified
in accordance with what GCC is expecting to find.

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
drivers/net/ethernet/broadcom/cnic.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/cnic.c b/drivers/net/ethernet/broadcom/cnic.c
index 510dfc1c236b..57dc3cbff36e 100644
--- a/drivers/net/ethernet/broadcom/cnic.c
+++ b/drivers/net/ethernet/broadcom/cnic.c
@@ -4038,15 +4038,14 @@ static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
case L5CM_RAMROD_CMD_ID_CLOSE: {
struct iscsi_kcqe *l5kcqe = (struct iscsi_kcqe *) kcqe;

- if (l4kcqe->status != 0 || l5kcqe->completion_status != 0) {
- netdev_warn(dev->netdev, "RAMROD CLOSE compl with status 0x%x completion status 0x%x\n",
- l4kcqe->status, l5kcqe->completion_status);
- opcode = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
- /* Fall through */
- } else {
+ if (l4kcqe->status == 0 && l5kcqe->completion_status == 0)
break;
- }
+
+ netdev_warn(dev->netdev, "RAMROD CLOSE compl with status 0x%x completion status 0x%x\n",
+ l4kcqe->status, l5kcqe->completion_status);
+ opcode = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
}
+ /* Fall through */
case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
case L4_KCQE_OPCODE_VALUE_RESET_COMP:
--
2.21.0
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