linux-kernel - [PATCH 4.9 26/38] nvme-pci: add quirk for delay before CHK RDY for WDC SN200

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Message-Id: <20171204160008.458694728@linuxfoundation.org>
Date:   Mon,  4 Dec 2017 17:00:06 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jeff Lien <jeff.lien@....com>,
        Christoph Hellwig <hch@....de>
Subject: [PATCH 4.9 26/38] nvme-pci: add quirk for delay before CHK RDY for WDC SN200

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jeff Lien <jeff.lien@....com>

commit 8c97eeccf0ad8783c057830119467b877bdfced7 upstream.

And increase the existing delay to cover this device as well.

Signed-off-by: Jeff Lien <jeff.lien@....com>
Signed-off-by: Christoph Hellwig <hch@....de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/nvme/host/nvme.h |    2 +-
 drivers/nvme/host/pci.c  |    2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -84,7 +84,7 @@ enum nvme_quirks {
  * NVME_QUIRK_DELAY_BEFORE_CHK_RDY quirk enabled. The value (in ms) was
  * found empirically.
  */
-#define NVME_QUIRK_DELAY_AMOUNT		2000
+#define NVME_QUIRK_DELAY_AMOUNT		2300
 
 enum nvme_ctrl_state {
 	NVME_CTRL_NEW,
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2109,6 +2109,8 @@ static const struct pci_device_id nvme_i
 		.driver_data = NVME_QUIRK_IDENTIFY_CNS, },
 	{ PCI_DEVICE(0x1c58, 0x0003),	/* HGST adapter */
 		.driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, },
+	{ PCI_DEVICE(0x1c58, 0x0023),	/* WDC SN200 adapter */
+		.driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, },
 	{ PCI_DEVICE(0x1c5f, 0x0540),	/* Memblaze Pblaze4 adapter */
 		.driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, },
 	{ PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_EXPRESS, 0xffffff) },