From: Matthew Wilcox <willy@debian.org>
To: linux-ia64@vger.kernel.org
Subject: [PATCH] acpi_register_irq()
Date: Fri, 11 Jul 2003 19:02:34 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105795124411277@msgid-missing> (raw)
acpi_madt is marked as __initdata, so an attempt to use
acpi_register_irq() after we discarded init sections would cause us to
dereference a random location. Everywhere else uses has_8259 anyway.
Index: arch/ia64/kernel/acpi.c
=================================RCS file: /var/cvs/linux-2.5/arch/ia64/kernel/acpi.c,v
retrieving revision 1.11
diff -u -p -r1.11 acpi.c
--- arch/ia64/kernel/acpi.c 2 Jul 2003 22:07:32 -0000 1.11
+++ arch/ia64/kernel/acpi.c 11 Jul 2003 18:58:43 -0000
@@ -720,7 +720,7 @@ acpi_register_irq (u32 gsi, u32 polarity
{
int vector = 0;
- if (acpi_madt->flags.pcat_compat && (gsi < 16))
+ if (has_8259 && (gsi < 16))
return isa_irq_to_vector(gsi);
if (!iosapic_register_intr)
--
"It's not Hollywood. War is real, war is primarily not about defeat or
victory, it is about death. I've seen thousands and thousands of dead bodies.
Do you think I want to have an academic debate on this subject?" -- Robert Fisk
reply other threads:[~2003-07-11 19:02 UTC|newest]
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