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authorLuis R. Rodriguez <lrodriguez@atheros.com>2009-07-20 08:32:47 -0700
committerJohn W. Linville <linville@tuxdriver.com>2009-07-21 15:59:50 -0400
commit5d2214ac5e7f72c9ae70b2444649e8d1d3e1086d (patch)
tree2c910f0a513c5b715a9930d3182e0561604db9f8
parentbfa99bfdda1ce8a60f1f0fba7a04162a66d4ecfa (diff)
downloadop-kernel-dev-5d2214ac5e7f72c9ae70b2444649e8d1d3e1086d.zip
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ath: add support for special 0x8000 regulatory domain
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. It may have been possible the manufacturer intended to use 0x0 as the regulatory domain and that would ultimately yield to US but since we cannot get confirmationf or this we default this special case to one of our world regulatory domains, specifically 0x64. Reported-by: DavidFreeman on #linux-wireless Reported-by: Joerg Albert <jal2@gmx.de> Cc: Christian Lamparter <chunkeey@web.de>, Cc: Stephen Chen <stephen.chen@atheros.com> Cc: David Quan <david.quan@atheros.com> Cc: Tony Yang <tony.yang@atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/net/wireless/ath/regd.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/regd.c b/drivers/net/wireless/ath/regd.c
index eef370bd..bf3d25b 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 != COUNTRY_ERD_FLAG)
+ 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)) {
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