PCI: disable MSI by default on systems with Serverworks HT1000 chips (e3008ded) · Commits · 戴 / test

I've been seeing lots of messages like these: eth0: No interrupt was generated using MSI, switching to INTx mode. Please report this failure to the PCI maintainer and include system chipset information. On several systems that use the following Severworks HT1000 (also sometimes labeled as a Broadcom chipset as well) bridge chips. It doesn't appear MSI works well (if at all) on these systems. Signed-off-by:

Andy Gospodarek <andy@greyhouse.net> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by:

Andrew Morton <akpm@linux-foundation.org> Signed-off-by:

Greg Kroah-Hartman <gregkh@suse.de>

drivers/pci/quirks.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1637,6 +1637,7 @@ static void __init quirk_disable_all_msi(struct pci_dev *dev)
		printk(KERN_WARNING "PCI: MSI quirk detected. MSI deactivated.\n");
		}
		DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
		DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000_PCIX, quirk_disable_all_msi);
		DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
		DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);

include/linux/pci_ids.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -1437,6 +1437,7 @@
		#define PCI_DEVICE_ID_SERVERWORKS_LE 0x0009
		#define PCI_DEVICE_ID_SERVERWORKS_GCNB_LE 0x0017
		#define PCI_DEVICE_ID_SERVERWORKS_EPB 0x0103
		#define PCI_DEVICE_ID_SERVERWORKS_HT1000_PCIX 0x0104
		#define PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE 0x0132
		#define PCI_DEVICE_ID_SERVERWORKS_OSB4 0x0200
		#define PCI_DEVICE_ID_SERVERWORKS_CSB5 0x0201

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