summaryrefslogtreecommitdiff
path: root/scripts/kconfig/menu.c
diff options
context:
space:
mode:
authorThomas Gleixner <tglx@linutronix.de>2013-07-04 23:11:22 +0200
committerThomas Gleixner <tglx@linutronix.de>2013-07-04 23:11:22 +0200
commit2b0f89317e99735bbf32eaede81f707f98ab1b5e (patch)
tree16daa236e21876b11f1c0b9256cd4046aadba020 /scripts/kconfig/menu.c
parent07bd1172902e782f288e4d44b1fde7dec0f08b6f (diff)
parentfa18f7bde3ad4568d1d343b60d963bfbd8dc3991 (diff)
Merge branch 'timers/posix-cpu-timers-for-tglx' of
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks into timers/core Frederic sayed: "Most of these patches have been hanging around for several month now, in -mmotm for a significant chunk. They already missed a few releases." Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'scripts/kconfig/menu.c')
-rw-r--r--scripts/kconfig/menu.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
index b5c7d90df9df..fd3f0180e08f 100644
--- a/scripts/kconfig/menu.c
+++ b/scripts/kconfig/menu.c
@@ -146,11 +146,24 @@ struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *e
struct menu *menu = current_entry;
while ((menu = menu->parent) != NULL) {
+ struct expr *dup_expr;
+
if (!menu->visibility)
continue;
+ /*
+ * Do not add a reference to the
+ * menu's visibility expression but
+ * use a copy of it. Otherwise the
+ * expression reduction functions
+ * will modify expressions that have
+ * multiple references which can
+ * cause unwanted side effects.
+ */
+ dup_expr = expr_copy(menu->visibility);
+
prop->visible.expr
= expr_alloc_and(prop->visible.expr,
- menu->visibility);
+ dup_expr);
}
}