nvmet-fcloop: suppress a compiler warning

BugLink: https://bugs.launchpad.net/bugs/1854975
[ Upstream commit 1216e9ef18b84f4fb5934792368fb01eb3540520 ]

Building with W=1 enables the compiler warning -Wimplicit-fallthrough=3. That
option does not recognize the fall-through comment in the fcloop driver. Add
a fall-through comment that is recognized for -Wimplicit-fallthrough=3. This
patch avoids that the compiler reports the following warning when building
with W=1:

drivers/nvme/target/fcloop.c:647:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (op == NVMET_FCOP_READDATA)
      ^

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>

diff --git a/drivers/nvme/target/fcloop.c b/drivers/nvme/target/fcloop.c
index 7fdda8f8a5661c1e17c8e8443c811d2de58fed34..eafadd8848b6ea01827c7fd081afa5fadac27662 100644 (file)
--- a/drivers/nvme/target/fcloop.c
+++ b/drivers/nvme/target/fcloop.c
@@ -535,6 +535,7 @@ fcloop_fcp_op(struct nvmet_fc_target_port *tgtport,
                        break;
 
                /* Fall-Thru to RSP handling */
+               /* FALLTHRU */
 
        case NVMET_FCOP_RSP:
                if (fcpreq) {