To me it really looks like you are missing a put_cpu() call somewhere.
I know it is a no-op, but since you intend to show how to use it, I
it really ought to be there.
Does this look right?
diff -Nur linux.old/arch/i386/kernel/ioport.c linux.new/arch/i386/kernel/ioport.c
--- linux.old/arch/i386/kernel/ioport.c Sun Oct 6 22:33:22 2002
+++ linux.new/arch/i386/kernel/ioport.c Sun Oct 6 22:33:53 2002
@@ -87,6 +87,8 @@
set_bitmap(t->io_bitmap, from, num, !turn_on);
set_bitmap(tss->io_bitmap, from, num, !turn_on);
+ put_cpu();
+
return 0;
}
-- Kasper Dupont -- der bruger for meget tid på usenet. For sending spam use mailto:aaarep@daimi.au.dk or mailto:mcxumhvenwblvtl@skrammel.yaboo.dk - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/