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openwrt/package/kernel/mac80211/patches/406-ath_relax_default_regd.patch
Felix Fietkau 79a768a90f ath: do not apply broken power limits with ATH_USER_REGD
If a device uses the default EEPROM code, typically only the main CTLs
are valid, and they do not apply properly when switching to a different
regulatory domain. If the regdomain deviates from the EEPROM one, force
the world roaming regdomain to ensure that power limits are sane

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2017-03-22 20:49:28 +01:00

52 lines
1.3 KiB
Diff

--- a/drivers/net/wireless/ath/regd.c
+++ b/drivers/net/wireless/ath/regd.c
@@ -115,6 +115,16 @@ static const struct ieee80211_regdomain
)
};
+static u16 ath_regd_get_eepromRD(struct ath_regulatory *reg)
+{
+ return reg->current_rd & ~WORLDWIDE_ROAMING_FLAG;
+}
+
+static bool is_default_regd(struct ath_regulatory *reg)
+{
+ return ath_regd_get_eepromRD(reg) == CTRY_DEFAULT;
+}
+
static bool dynamic_country_user_possible(struct ath_regulatory *reg)
{
if (IS_ENABLED(CPTCFG_ATH_USER_REGD))
@@ -123,6 +133,9 @@ static bool dynamic_country_user_possibl
if (IS_ENABLED(CPTCFG_ATH_REG_DYNAMIC_USER_CERT_TESTING))
return true;
+ if (is_default_regd(reg))
+ return true;
+
switch (reg->country_code) {
case CTRY_UNITED_STATES:
case CTRY_JAPAN1:
@@ -208,11 +221,6 @@ static inline bool is_wwr_sku(u16 regd)
(regd == WORLD));
}
-static u16 ath_regd_get_eepromRD(struct ath_regulatory *reg)
-{
- return reg->current_rd & ~WORLDWIDE_ROAMING_FLAG;
-}
-
bool ath_is_world_regd(struct ath_regulatory *reg)
{
return is_wwr_sku(ath_regd_get_eepromRD(reg));
@@ -658,6 +666,9 @@ ath_regd_init_wiphy(struct ath_regulator
if (IS_ENABLED(CPTCFG_ATH_USER_REGD))
return 0;
+ if (is_default_regd(reg))
+ return 0;
+
wiphy->regulatory_flags |= REGULATORY_STRICT_REG |
REGULATORY_CUSTOM_REG;