cfg80211: fix regulatory code const
A few pointers and structures in the regulatory code are const,
but because it wasn't done properly a whole bunch of bogus
casts were needed to compile without warning. Mark everything
const properly to avoid that kind of junk code.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 5fbeab5..7aba46e 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -68,7 +68,7 @@
/* Central wireless core regulatory domains, we only need two,
* the current one and a world regulatory domain in case we have no
* information to give us an alpha2 */
-static struct ieee80211_regdomain *cfg80211_regdomain;
+static const struct ieee80211_regdomain *cfg80211_regdomain;
/* We keep a static world regulatory domain in case of the absence of CRDA */
static const struct ieee80211_regdomain world_regdom = {
@@ -81,8 +81,8 @@
}
};
-static struct ieee80211_regdomain *cfg80211_world_regdom =
- (struct ieee80211_regdomain *) &world_regdom;
+static const struct ieee80211_regdomain *cfg80211_world_regdom =
+ &world_regdom;
#ifdef CONFIG_WIRELESS_OLD_REGULATORY
static char *ieee80211_regdom = "US";
@@ -168,7 +168,7 @@
return &us_regdom;
}
-static bool is_old_static_regdom(struct ieee80211_regdomain *rd)
+static bool is_old_static_regdom(const struct ieee80211_regdomain *rd)
{
if (rd == &us_regdom || rd == &jp_regdom || rd == &eu_regdom)
return true;
@@ -201,13 +201,13 @@
} else if (cfg80211_regdomain && cfg80211_regdomain != &world_regdom)
kfree(cfg80211_regdomain);
- cfg80211_world_regdom = (struct ieee80211_regdomain *) &world_regdom;
+ cfg80211_world_regdom = &world_regdom;
cfg80211_regdomain = NULL;
}
/* Dynamic world regulatory domain requested by the wireless
* core upon initialization */
-static void update_world_regdomain(struct ieee80211_regdomain *rd)
+static void update_world_regdomain(const struct ieee80211_regdomain *rd)
{
BUG_ON(list_empty(®ulatory_requests));
@@ -218,7 +218,7 @@
}
#endif
-bool is_world_regdom(char *alpha2)
+bool is_world_regdom(const char *alpha2)
{
if (!alpha2)
return false;
@@ -227,7 +227,7 @@
return false;
}
-static bool is_alpha2_set(char *alpha2)
+static bool is_alpha2_set(const char *alpha2)
{
if (!alpha2)
return false;
@@ -244,7 +244,7 @@
return false;
}
-static bool is_unknown_alpha2(char *alpha2)
+static bool is_unknown_alpha2(const char *alpha2)
{
if (!alpha2)
return false;
@@ -255,7 +255,7 @@
return false;
}
-static bool is_an_alpha2(char *alpha2)
+static bool is_an_alpha2(const char *alpha2)
{
if (!alpha2)
return false;
@@ -264,7 +264,7 @@
return false;
}
-static bool alpha2_equal(char *alpha2_x, char *alpha2_y)
+static bool alpha2_equal(const char *alpha2_x, const char *alpha2_y)
{
if (!alpha2_x || !alpha2_y)
return false;
@@ -274,7 +274,7 @@
return false;
}
-static bool regdom_changed(char *alpha2)
+static bool regdom_changed(const char *alpha2)
{
if (!cfg80211_regdomain)
return true;
@@ -405,7 +405,7 @@
}
}
-static bool __reg_is_valid_request(char *alpha2,
+static bool __reg_is_valid_request(const char *alpha2,
struct regulatory_request **request)
{
struct regulatory_request *req;
@@ -421,16 +421,16 @@
}
/* Used by nl80211 before kmalloc'ing our regulatory domain */
-bool reg_is_valid_request(char *alpha2)
+bool reg_is_valid_request(const char *alpha2)
{
struct regulatory_request *request = NULL;
return __reg_is_valid_request(alpha2, &request);
}
/* Sanity check on a regulatory rule */
-static bool is_valid_reg_rule(struct ieee80211_reg_rule *rule)
+static bool is_valid_reg_rule(const struct ieee80211_reg_rule *rule)
{
- struct ieee80211_freq_range *freq_range = &rule->freq_range;
+ const struct ieee80211_freq_range *freq_range = &rule->freq_range;
u32 freq_diff;
if (freq_range->start_freq_khz == 0 || freq_range->end_freq_khz == 0)
@@ -447,9 +447,9 @@
return true;
}
-static bool is_valid_rd(struct ieee80211_regdomain *rd)
+static bool is_valid_rd(const struct ieee80211_regdomain *rd)
{
- struct ieee80211_reg_rule *reg_rule = NULL;
+ const struct ieee80211_reg_rule *reg_rule = NULL;
unsigned int i;
if (!rd->n_reg_rules)
@@ -661,12 +661,12 @@
EXPORT_SYMBOL(regulatory_hint);
-static void print_rd_rules(struct ieee80211_regdomain *rd)
+static void print_rd_rules(const struct ieee80211_regdomain *rd)
{
unsigned int i;
- struct ieee80211_reg_rule *reg_rule = NULL;
- struct ieee80211_freq_range *freq_range = NULL;
- struct ieee80211_power_rule *power_rule = NULL;
+ const struct ieee80211_reg_rule *reg_rule = NULL;
+ const struct ieee80211_freq_range *freq_range = NULL;
+ const struct ieee80211_power_rule *power_rule = NULL;
printk(KERN_INFO "\t(start_freq - end_freq @ bandwidth), "
"(max_antenna_gain, max_eirp)\n");
@@ -696,7 +696,7 @@
}
}
-static void print_regdomain(struct ieee80211_regdomain *rd)
+static void print_regdomain(const struct ieee80211_regdomain *rd)
{
if (is_world_regdom(rd->alpha2))
@@ -715,14 +715,14 @@
print_rd_rules(rd);
}
-void print_regdomain_info(struct ieee80211_regdomain *rd)
+void print_regdomain_info(const struct ieee80211_regdomain *rd)
{
printk(KERN_INFO "cfg80211: Regulatory domain: %c%c\n",
rd->alpha2[0], rd->alpha2[1]);
print_rd_rules(rd);
}
-static int __set_regdom(struct ieee80211_regdomain *rd)
+static int __set_regdom(const struct ieee80211_regdomain *rd)
{
struct regulatory_request *request = NULL;
@@ -804,7 +804,7 @@
* multiple drivers can be ironed out later. Caller must've already
* kmalloc'd the rd structure. If this calls fails you should kfree()
* the passed rd. Caller must hold cfg80211_drv_mutex */
-int set_regdom(struct ieee80211_regdomain *rd)
+int set_regdom(const struct ieee80211_regdomain *rd)
{
struct regulatory_request *this_request = NULL, *prev_request = NULL;
int r;
@@ -857,8 +857,7 @@
return PTR_ERR(reg_pdev);
#ifdef CONFIG_WIRELESS_OLD_REGULATORY
- cfg80211_regdomain =
- (struct ieee80211_regdomain *) static_regdom(ieee80211_regdom);
+ cfg80211_regdomain = static_regdom(ieee80211_regdom);
/* Used during reset_regdomains_static() */
cfg80211_world_regdom = cfg80211_regdomain;
@@ -872,8 +871,7 @@
err = __regulatory_hint(NULL, REGDOM_SET_BY_CORE,
ieee80211_regdom, NULL);
#else
- cfg80211_regdomain =
- (struct ieee80211_regdomain *) cfg80211_world_regdom;
+ cfg80211_regdomain = cfg80211_world_regdom;
err = __regulatory_hint(NULL, REGDOM_SET_BY_CORE, "00", NULL);
if (err)