xen/pci: Move check for acpi_sci_override_gsi to xen_setup_acpi_sci.
authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Wed, 6 Jul 2011 13:43:16 +0000 (09:43 -0400)
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Thu, 7 Jul 2011 16:19:08 +0000 (12:19 -0400)
commitee339fe63ac408e4604c1c88b1f9a428f2511b70
treefc0ebf6e43de16750b07317f92d77cd350a2a709
parent155a16f21923bc2f04161ac92acca986371ef27b
xen/pci: Move check for acpi_sci_override_gsi to xen_setup_acpi_sci.

Previously we would check for acpi_sci_override_gsi == gsi every time
a PCI device was enabled. That works during early bootup, but later
on it could lead to triggering unnecessarily the acpi_gsi_to_irq(..) lookup.
The reason is that acpi_sci_override_gsi was declared in __initdata and
after early bootup could contain bogus values.

This patch moves the check for acpi_sci_override_gsi to the
site where the ACPI SCI is preset.

CC: stable@kernel.org
Reported-by: Raghavendra D Prabhu <rprabhu@wnohang.net>
Tested-by: Raghavendra D Prabhu <rprabhu@wnohang.net>
[http://lists.xensource.com/archives/html/xen-devel/2011-07/msg00154.html]
Suggested-by:  Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
arch/x86/pci/xen.c