netdev - [PATCH] pci: Limit VPD reads for all Intel Ethernet devices

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Message-ID: <20150519000042.56109.69779.stgit@mdrustad-wks.jf.intel.com>
Date:	Mon, 18 May 2015 17:00:42 -0700
From:	Mark D Rustad <mark.d.rustad@...el.com>
To:	bhelgaas@...gle.com
Cc:	linux-pci@...r.kernel.org, intel-wired-lan@...ts.osuosl.org,
	netdev@...r.kernel.org
Subject: [PATCH] pci: Limit VPD reads for all Intel Ethernet devices

To save boot time and some memory, limit VPD size to the maximum
possible for all Intel Ethernet devices that have VPD, which is 1K.

Signed-off-by: Mark Rustad <mark.d.rustad@...el.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 drivers/pci/quirks.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index c6dc1dfd25d5..4fabbeda964a 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1903,12 +1903,15 @@ static void quirk_netmos(struct pci_dev *dev)
 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID,
 			 PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos);
 
-static void quirk_e100_interrupt(struct pci_dev *dev)
+static void quirk_intel_enet(struct pci_dev *dev)
 {
 	u16 command, pmcsr;
 	u8 __iomem *csr;
 	u8 cmd_hi;
 
+	if (dev->vpd)
+		dev->vpd->len = 0x400;
+
 	switch (dev->device) {
 	/* PCI IDs taken from drivers/net/e100.c */
 	case 0x1029:
@@ -1967,7 +1970,7 @@ static void quirk_e100_interrupt(struct pci_dev *dev)
 	iounmap(csr);
 }
 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
-			PCI_CLASS_NETWORK_ETHERNET, 8, quirk_e100_interrupt);
+			      PCI_CLASS_NETWORK_ETHERNET, 8, quirk_intel_enet);
 
 /*
  * The 82575 and 82598 may experience data corruption issues when transitioning

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