linux-kernel - [PATCH] PCI: Mark NXP LS1088 to avoid bus reset bus

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Message-ID: <20181127083454.26560-1-Bharat.Bhushan@nxp.com>
Date:   Tue, 27 Nov 2018 08:46:33 +0000
From:   Bharat Bhushan <bharat.bhushan@....com>
To:     "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     "bharatb.yadav@...il.com" <bharatb.yadav@...il.com>,
        Bharat Bhushan <bharat.bhushan@....com>
Subject: [PATCH] PCI: Mark NXP LS1088 to avoid bus reset bus

NXP (Freescale Vendor ID) LS1088 chips do not behave correctly after
bus reset with e1000e. Link state of device does not comes UP and so
config space never accessible again.

Signed-off-by: Bharat Bhushan <Bharat.Bhushan@....com>
---
 drivers/pci/quirks.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 4700d24e5d55..b9ae4e9f101a 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -3391,6 +3391,13 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0033, quirk_no_bus_reset);
  */
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CAVIUM, 0xa100, quirk_no_bus_reset);
 
+/*
+ * NXP (Freescale Vendor ID) LS1088 chips do not behave correctly after
+ * bus reset. Link state of device does not comes UP and so config space
+ * never accessible again.
+ */
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_FREESCALE, 0x80c0, quirk_no_bus_reset);
+
 static void quirk_no_pm_reset(struct pci_dev *dev)
 {
 	/*
-- 
2.19.1