Two users of ar9170 devices have now reported their cards
have been programmed with a regulatory domain of 0x8000.
This is not a valid regulatory domain as such these users were
unable to use these devices. Since this doesn't seem to be
a device EEPROM corruption we must treat it specially.
We default these devices to the default Atheros 0x64 world
regulatory domain.
Reported-by: DavidFreeman on #linux-wireless
Reported-by: Joerg Albert <jal2@xxxxxx>
Cc: Christian Lamparter <chunkeey@xxxxxx>,
Cc: Stephen Chen <Stephen.Chen@xxxxxxxxxxx>
Cc: David Quan <David.Quan@xxxxxxxxxxx>
Cc: Tony Yang <Tony.Yang@xxxxxxxxxxx>
Signed-off-by: Luis R. Rodriguez <lrodriguez@xxxxxxxxxxx>
---
David, or Joerg, can you please test this patch.
drivers/net/wireless/ath/regd.c | 17 +++++++++++++++++
1 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/ath/regd.c b/drivers/net/wireless/ath/regd.c
index f37c832..62aa270 100644
--- a/drivers/net/wireless/ath/regd.c
+++ b/drivers/net/wireless/ath/regd.c
@@ -474,6 +474,21 @@ ath_regd_init_wiphy(struct ath_regulatory *reg,
return 0;
}
+/*
+ * Some users have reported their EEPROM programmed with
+ * 0x8000 set, this is not a supported regulatory domain
+ * but since we have more than one user with it we need
+ * a solution for them. We default to 0x64, which is the
+ * default Atheros world regulatory domain.
+ */
+static void ath_regd_sanitize(struct ath_regulatory *reg)
+{
+ if (reg->current_rd != CTRY_DEFAULT)
+ return;
+ printk(KERN_DEBUG "ath: EEPROM regdomain sanitized\n");
+ reg->current_rd = 0x64;
+}
+
int
ath_regd_init(struct ath_regulatory *reg,
struct wiphy *wiphy,
@@ -486,6 +501,8 @@ ath_regd_init(struct ath_regulatory *reg,
if (!reg)
return -EINVAL;
+ ath_regd_sanitize(reg);
+
printk(KERN_DEBUG "ath: EEPROM regdomain: 0x%0x\n", reg->current_rd);
if (!ath_regd_is_eeprom_valid(reg)) {
--
1.6.3.3
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