[PATCH] Fix bad apic fix on i386

[cascardo/linux.git] / arch / i386 / kernel / ioport.c

diff --git a/arch/i386/kernel/ioport.c b/arch/i386/kernel/ioport.c
index f2b3765..79026f0 100644 (file)
--- a/arch/i386/kernel/ioport.c
+++ b/arch/i386/kernel/ioport.c
@@ -7,6 +7,7 @@
 
 #include <linux/sched.h>
 #include <linux/kernel.h>
+#include <linux/capability.h>
 #include <linux/errno.h>
 #include <linux/types.h>
 #include <linux/ioport.h>
@@ -108,8 +109,11 @@ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on)
        /*
         * Sets the lazy trigger so that the next I/O operation will
         * reload the correct bitmap.
+        * Reset the owner so that a process switch will not set
+        * tss->io_bitmap_base to IO_BITMAP_OFFSET.
         */
        tss->io_bitmap_base = INVALID_IO_BITMAP_OFFSET_LAZY;
+       tss->io_bitmap_owner = NULL;
 
        put_cpu();