From: Gerd Bayer <gbayer@linux.ibm.com>
To: Keith Busch <kbusch@kernel.org>, Jens Axboe <axboe@kernel.dk>,
Christoph Hellwig <hch@lst.de>, Sagi Grimberg <sagi@grimberg.me>
Cc: Niklas Schnelle <schnelle@linux.ibm.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Chaitanya Kulkarni <kchk@nvidia.com>,
Wilfred Mallawa <wilfred.mallawa@wdc.com>,
linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org,
Gerd Bayer <gbayer@linux.ibm.com>,
Chaitanya Kulkarni <kch@nvidia.com>
Subject: [PATCH v2 2/2] nvme-pci: Add debug message on fail to read CSTS
Date: Wed, 22 Oct 2025 12:33:17 +0200 [thread overview]
Message-ID: <20251022-nvme_probefail-v2-2-26bbdf94280e@linux.ibm.com> (raw)
In-Reply-To: <20251022-nvme_probefail-v2-0-26bbdf94280e@linux.ibm.com>
Add a debug log spelling out that reading the CSTS register failed - to
distinguish this from other reasons for ENODEV.
Reviewed-by: Wilfred Mallawa <wilfred.mallawa@wdc.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Gerd Bayer <gbayer@linux.ibm.com>
---
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 8c624960c9f67e0cc8409023de5e532d6ed9b3ac..ce563e93d29443a25e9236d0b6d8152ee85796d7 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2906,6 +2906,7 @@ 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");
result = -ENODEV;
goto disable;
}
--
2.48.1
next prev parent reply other threads:[~2025-10-22 10:33 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-22 10:33 [PATCH v2 0/2] nvme-pci: Log failures to probe Gerd Bayer
2025-10-22 10:33 ` [PATCH v2 1/2] nvme-pci: Print error message on failure in nvme_probe Gerd Bayer
2025-10-22 10:53 ` Gerd Bayer
2025-10-23 8:13 ` Christoph Hellwig
2025-10-22 10:33 ` Gerd Bayer [this message]
2025-10-23 8:13 ` [PATCH v2 2/2] nvme-pci: Add debug message on fail to read CSTS Christoph Hellwig
2025-10-23 10:55 ` John Garry
2025-10-23 14:17 ` Gerd Bayer
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