In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

This patch fixes the following warning:

drivers/nvme/host/pci.c: In function ‘nvme_timeout’:
drivers/nvme/host/pci.c:1298:12: warning: this statement may fall through 
[-Wimplicit-fallthrough=]
   shutdown = true;
   ~~~~~~~~~^~~~~~
drivers/nvme/host/pci.c:1299:2: note: here
  case NVME_CTRL_CONNECTING:
  ^~~~

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

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

Signed-off-by: Gustavo A. R. Silva <[email protected]>
---
 drivers/nvme/host/pci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 3e4fb891a95a..a12f992868c9 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1296,6 +1296,7 @@ static enum blk_eh_timer_return nvme_timeout(struct 
request *req, bool reserved)
        switch (dev->ctrl.state) {
        case NVME_CTRL_DELETING:
                shutdown = true;
+               /* fall through */
        case NVME_CTRL_CONNECTING:
        case NVME_CTRL_RESETTING:
                dev_warn_ratelimited(dev->ctrl.device,
-- 
2.21.0

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