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authorMatthew Wilcox <matthew@wil.cx>2006-03-05 22:33:34 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2006-03-23 14:35:16 -0800
commit309e57df7b766172ba137a8cbd909f88dd76e8e9 (patch)
tree74cc85977654925c76c687e597c7586b9e75629b /drivers/pci/Kconfig
parent5eeca8e688b6affba4cd85262152fdd1b274ad33 (diff)
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op-kernel-dev-309e57df7b766172ba137a8cbd909f88dd76e8e9.tar.gz
[PATCH] PCI: Provide a boot parameter to disable MSI
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>
Diffstat (limited to 'drivers/pci/Kconfig')
-rw-r--r--drivers/pci/Kconfig4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index d3dcce8..4d762fc 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -11,6 +11,10 @@ config PCI_MSI
generate an interrupt using an inbound Memory Write on its
PCI bus instead of asserting a device IRQ pin.
+ Use of PCI MSI interrupts can be disabled at kernel boot time
+ by using the 'pci=nomsi' option. This disables MSI for the
+ entire system.
+
If you don't know what to do here, say N.
config PCI_DEBUG
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