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[PATCH] PCI: Provide a boot parameter to disable MSI

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Several drivers are starting to grow options to disable MSI.  However,
it's often a host chipset issue, not something which individual drivers
should handle.  So we add the pci=nomsi kernel parameter to allow the user
to disable MSI modes for systems we haven't added to the quirk list yet.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Matthew Wilcox
2006-03-05 22:33:34 -07:00
committed by Greg Kroah-Hartman
parent 5eeca8e688
commit 309e57df7b
5 changed files with 26 additions and 2 deletions
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drivers/pci/pci.h
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@@ -50,8 +50,10 @@ extern int pci_msi_quirk;
#ifdef CONFIG_PCI_MSI
void disable_msi_mode(struct pci_dev *dev, int pos, int type);
void pci_no_msi(void);
#else
static inline void disable_msi_mode(struct pci_dev *dev, int pos, int type) { }
static inline void pci_no_msi(void) { }
#endif
extern int pcie_mch_quirk;