On 07/16/2009 11:18 PM, Luis R. Rodriguez wrote:
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.
...
David, or Joerg, can you please test this patch.
Hi Luis,
this patch doesn't work, I still get:
ath: EEPROM regdomain: 0x8000
ath: EEPROM indicates we should expect a country code
ath: No regulatory domain pair found, cannot continue
ar9170usb: probe of 1-1:1.0 failed with error -22
I guess that's due to reg->current_rd == 0x8000, while CTRY_DEFAULT
== 0 in ath_regd_sanitize().
Applying
diff --git a/drivers/net/wireless/ath/regd.c
b/drivers/net/wireless/ath/regd.c
index 62aa270..eae9a58 100644
--- a/drivers/net/wireless/ath/regd.c
+++ b/drivers/net/wireless/ath/regd.c
@@ -483,7 +483,7 @@ ath_regd_init_wiphy(struct ath_regulatory *reg,
*/
static void ath_regd_sanitize(struct ath_regulatory *reg)
{
- if (reg->current_rd != CTRY_DEFAULT)
+ if (reg->current_rd != (CTRY_DEFAULT|COUNTRY_ERD_FLAG))
return;
printk(KERN_DEBUG "ath: EEPROM regdomain sanitized\n");
reg->current_rd = 0x64;
on top of your patch worked:
ath: EEPROM regdomain sanitized
ath: EEPROM regdomain: 0x64
ath: EEPROM indicates we should expect a direct regpair map
ath: Country alpha2 being used: 00
ath: Regpair used: 0x64
Why do we handle a regdomain of 0x8000 differently from a regdomain
of 0?
0x8000 leads to regdomain 0x64 in ath_regd_sanitize() while 0 is
mapped into country code CTRY_UNITED_STATES.
With the above patch I don't see channels 12,13,100-140 in "iwlist
wlan0 channel", which are allowed in DE, but I guess that's due to
using regdomain WOR4_WORLD (0x64).
Do calibration data in the EEPROM really depend on the regdomain,
i.e. do manufacturers calibrate only for a subset of channels due to
the regdomain the device will be programmed with?
BTW, I bought this device refurbished in an U.K. webshop.
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