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From: Heiner Kallweit <hkallweit1@gmail.com>
To: Bjorn Helgaas <bhelgaas@google.com>
Cc: "linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>
Subject: [PATCH] PCI/VPD: Remove not any longer needed Broadcom NIC quirk
Date: Thu, 17 Dec 2020 21:29:19 +0100	[thread overview]
Message-ID: <1c0c94d1-37bd-442f-a93e-6e2fa202526b@gmail.com> (raw)

This quirk was added in 2008 when we didn't have the logic yet to
determine VPD size based on checking for the VPD end tag. Now that we
have this logic and don't read beyond the end tag this quirk can be
removed.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
This is basically the same as what you're currently discussing
for the Marvell / QLogic 1077 quirk.
---
 drivers/pci/vpd.c | 46 ----------------------------------------------
 1 file changed, 46 deletions(-)

diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c
index 7915d10f9..ef5165eb3 100644
--- a/drivers/pci/vpd.c
+++ b/drivers/pci/vpd.c
@@ -578,52 +578,6 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_QLOGIC, 0x2261, quirk_blacklist_vpd);
 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031,
 			      PCI_CLASS_BRIDGE_PCI, 8, quirk_blacklist_vpd);
 
-/*
- * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the
- * VPD end tag will hang the device.  This problem was initially
- * observed when a vpd entry was created in sysfs
- * ('/sys/bus/pci/devices/<id>/vpd').   A read to this sysfs entry
- * will dump 32k of data.  Reading a full 32k will cause an access
- * beyond the VPD end tag causing the device to hang.  Once the device
- * is hung, the bnx2 driver will not be able to reset the device.
- * We believe that it is legal to read beyond the end tag and
- * therefore the solution is to limit the read/write length.
- */
-static void quirk_brcm_570x_limit_vpd(struct pci_dev *dev)
-{
-	/*
-	 * Only disable the VPD capability for 5706, 5706S, 5708,
-	 * 5708S and 5709 rev. A
-	 */
-	if ((dev->device == PCI_DEVICE_ID_NX2_5706) ||
-	    (dev->device == PCI_DEVICE_ID_NX2_5706S) ||
-	    (dev->device == PCI_DEVICE_ID_NX2_5708) ||
-	    (dev->device == PCI_DEVICE_ID_NX2_5708S) ||
-	    ((dev->device == PCI_DEVICE_ID_NX2_5709) &&
-	     (dev->revision & 0xf0) == 0x0)) {
-		if (dev->vpd)
-			dev->vpd->len = 0x80;
-	}
-}
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
-			PCI_DEVICE_ID_NX2_5706,
-			quirk_brcm_570x_limit_vpd);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
-			PCI_DEVICE_ID_NX2_5706S,
-			quirk_brcm_570x_limit_vpd);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
-			PCI_DEVICE_ID_NX2_5708,
-			quirk_brcm_570x_limit_vpd);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
-			PCI_DEVICE_ID_NX2_5708S,
-			quirk_brcm_570x_limit_vpd);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
-			PCI_DEVICE_ID_NX2_5709,
-			quirk_brcm_570x_limit_vpd);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM,
-			PCI_DEVICE_ID_NX2_5709S,
-			quirk_brcm_570x_limit_vpd);
-
 static void quirk_chelsio_extend_vpd(struct pci_dev *dev)
 {
 	int chip = (dev->device & 0xf000) >> 12;
-- 
2.29.2


             reply	other threads:[~2020-12-17 20:30 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-17 20:29 Heiner Kallweit [this message]
2020-12-17 20:47 ` [PATCH] PCI/VPD: Remove not any longer needed Broadcom NIC quirk Bjorn Helgaas
2020-12-17 20:55   ` Heiner Kallweit

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