linux-kernel - [PATCH AUTOSEL 4.14 17/22] nvme-pci: Use single IRQ vector for old Apple models

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Date:   Mon,  2 Mar 2020 21:49:28 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Leif Liddy <leif.liddy@...il.com>,
        Keith Busch <kbusch@...nel.org>,
        Sasha Levin <sashal@...nel.org>, linux-nvme@...ts.infradead.org
Subject: [PATCH AUTOSEL 4.14 17/22] nvme-pci: Use single IRQ vector for old Apple models

From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

[ Upstream commit 98f7b86a0becc1154b1a6df6e75c9695dfd87e0d ]

People reported that old Apple machines are not working properly
if the non-first IRQ vector is in use.

Set quirk for that models to limit IRQ to use first vector only.

Based on original patch by GitHub user npx001.

Link: https://github.com/Dunedan/mbp-2016-linux/issues/9
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Leif Liddy <leif.liddy@...il.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Signed-off-by: Keith Busch <kbusch@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/nvme/host/pci.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 3788c053a0b19..06cf0bc944f94 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2573,7 +2573,8 @@ static const struct pci_device_id nvme_id_table[] = {
 	{ PCI_DEVICE(0x1d1d, 0x2601),	/* CNEX Granby */
 		.driver_data = NVME_QUIRK_LIGHTNVM, },
 	{ PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_EXPRESS, 0xffffff) },
-	{ PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2001) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2001),
+		.driver_data = NVME_QUIRK_SINGLE_VECTOR },
 	{ PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2003) },
 	{ 0, }
 };
-- 
2.20.1