linux-kernel - [PATCH] lightnvm: change vendor and dev id for qemu

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Message-Id: <1448309732-14260-1-git-send-email-m@bjorling.me>
Date:	Mon, 23 Nov 2015 21:15:32 +0100
From:	Matias Bjørling <m@...rling.me>
To:	linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
	hch@...radead.org
Cc:	Matias Bjørling <m@...rling.me>,
	Keith Busch <keith.busch@...el.com>
Subject: [PATCH] lightnvm: change vendor and dev id for qemu

The QEMU NVMe simulator uses the intel vendor, qemu device id, and the
first vendor specific byte to identify a lightnvm compatible nvme
instance.

Instead of using the Intel NVMe QEMU instance vendor and device id,
let's use a preallocated from CNEX Labs instead. This lets us uniquely
identify a QEMU lightnvm device without breaking other vendor specific
work in the qemu device driver.

Reported-by: Christoph Hellwig <hch@...radead.org>
Signed-off-by: Matias Bjørling <m@...rling.me>
CC: Keith Busch <keith.busch@...el.com>
---
 drivers/nvme/host/lightnvm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
index 9202d1a..0789265 100644
--- a/drivers/nvme/host/lightnvm.c
+++ b/drivers/nvme/host/lightnvm.c
@@ -577,7 +577,7 @@ int nvme_nvm_ns_supported(struct nvme_ns *ns, struct nvme_id_ns *id)
 	struct pci_dev *pdev = to_pci_dev(dev->dev);
 
 	/* QEMU NVMe simulator - PCI ID + Vendor specific bit */
-	if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x5845 &&
+	if (pdev->vendor == 0x1d1d && pdev->device == 0x1f1f &&
 							id->vs[0] == 0x1)
 		return 1;
 
-- 
2.1.4

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