[PATCH V2] nvme-core: fix unsigned comparison warning in nvme_wait_freeze_timeout

[Maurizio Lombardi <mlombard@redhat.com>]

The timeout variable in nvme_wait_freeze_timeout() is an unsigned type.
Checking if it is <= 0 triggers a compiler warning because an unsigned
variable can never be negative.

Fix this warning by changing the type to long.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Closes: https://lore.kernel.org/r/202605211257.STzj2Ujv-lkp@intel.com/
Fixes: 23b6d2cbf75f ("nvme: remove redundant timeout argument from nvme_wait_freeze_timeout")
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
---

v2: keep the <= comparison, change the type from unsigned to signed long

 drivers/nvme/host/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 72c50d5e938d..554649ffe430 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -5246,7 +5246,7 @@ EXPORT_SYMBOL_GPL(nvme_unfreeze);
 
 int nvme_wait_freeze_timeout(struct nvme_ctrl *ctrl)
 {
-	unsigned long timeout = ctrl->io_timeout;
+	long timeout = ctrl->io_timeout;
 	struct nvme_ns *ns;
 	int srcu_idx;
 
-- 
2.54.0