Merge tag 'nvme-6.19-2025-12-04' of git://git.infradead.org/nvme into block-6.19

Pull NVMe updates from Keith:

"- Subsystem usage cleanups (Max)
 - Endpoint device fixes (Shin'ichiro)
 - Debug statements (Gerd)
 - FC fabrics cleanups and fixes (Daniel)
 - Consistent alloc API usages (Israel)
 - Code comment updates (Chu)
 - Authentication retry fix (Justin)"

* tag 'nvme-6.19-2025-12-04' of git://git.infradead.org/nvme:
  nvme-fabrics: add ENOKEY to no retry criteria for authentication failures
  nvme-auth: use kvfree() for memory allocated with kvcalloc()
  nvmet-tcp: use kvcalloc for commands array
  nvmet-rdma: use kvcalloc for commands and responses arrays
  nvme: fix typo error in nvme target
  nvmet-fc: use pr_* print macros instead of dev_*
  nvmet-fcloop: remove unused lsdir member.
  nvmet-fcloop: check all request and response have been processed
  nvme-fc: check all request and response have been processed
  nvme-fc: don't hold rport lock when putting ctrl
  nvme-pci: add debug message on fail to read CSTS
  nvme-pci: print error message on failure in nvme_probe
  nvmet: pci-epf: fix DMA channel debug print
  nvmet: pci-epf: move DMA initialization to EPC init callback
  nvmet: remove redundant subsysnqn field from ctrl
  nvmet: add sanity checks when freeing subsystem

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index e5ca8301bb8b..0e4caeab739c 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2984,6 +2984,7 @@ static int nvme_pci_enable(struct nvme_dev *dev)
 	pci_set_master(pdev);
 
 	if (readl(dev->bar + NVME_REG_CSTS) == -1) {
+		dev_dbg(dev->ctrl.device, "reading CSTS register failed\n");
 		result = -ENODEV;
 		goto disable;
 	}
@@ -3609,6 +3610,7 @@ out_uninit_ctrl:
 	nvme_uninit_ctrl(&dev->ctrl);
 out_put_ctrl:
 	nvme_put_ctrl(&dev->ctrl);
+	dev_err_probe(&pdev->dev, result, "probe failed\n");
 	return result;
 }