param: fix setting arrays of bool

We create a dummy struct kernel_param on the stack for parsing each
array element, but we didn't initialize the flags word.  This matters
for arrays of type "bool", where the flag indicates if it really is
an array of bools or unsigned int (old-style).

Reported-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: stable@kernel.org

diff --git a/kernel/params.c b/kernel/params.c
index 00520c43d88cad70bf376f1b9c7dea686d5c20aa..d656c276508de6a9bbeb62407b59e477ff7ff61e 100644 (file)
--- a/kernel/params.c
+++ b/kernel/params.c
@@ -300,6 +300,7 @@ static int param_array(const char *name,
                       unsigned int min, unsigned int max,
                       void *elem, int elemsize,
                       int (*set)(const char *, struct kernel_param *kp),
+                      u16 flags,
                       unsigned int *num)
 {
        int ret;
@@ -309,6 +310,7 @@ static int param_array(const char *name,
        /* Get the name right for errors. */
        kp.name = name;
        kp.arg = elem;
+       kp.flags = flags;
 
        /* No equals sign? */
        if (!val) {
@@ -354,7 +356,8 @@ int param_array_set(const char *val, struct kernel_param *kp)
        unsigned int temp_num;
 
        return param_array(kp->name, val, 1, arr->max, arr->elem,
-                          arr->elemsize, arr->set, arr->num ?: &temp_num);
+                          arr->elemsize, arr->set, kp->flags,
+                          arr->num ?: &temp_num);
 }
 
 int param_array_get(char *buffer, struct kernel_param *kp)