ath: make regulatory parsing more verbose on debug

This should help when reviewing issues regarding regulatory
domain on ath5k/ath9k/ar9170.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 25 insertions, 4 deletions

diff --git a/drivers/net/wireless/ath/regd.c b/drivers/net/wireless/ath/regd.c
index 7a89f9fac7d..eef370bd121 100644
--- a/drivers/net/wireless/ath/regd.c
+++ b/drivers/net/wireless/ath/regd.c
@@ -366,11 +366,17 @@ static bool ath_regd_is_eeprom_valid(struct ath_regulatory *reg)
         if (rd & COUNTRY_ERD_FLAG) {
                 /* EEPROM value is a country code */
                 u16 cc = rd & ~COUNTRY_ERD_FLAG;
+                printk(KERN_DEBUG
+                       "ath: EEPROM indicates we should expect "
+                        "a country code\n");
                 for (i = 0; i < ARRAY_SIZE(allCountries); i++)
                         if (allCountries[i].countryCode == cc)
                                 return true;
         } else {
                 /* EEPROM value is a regpair value */
+                if (rd != CTRY_DEFAULT)
+                        printk(KERN_DEBUG "ath: EEPROM indicates we "
+                               "should expect a direct regpair map\n");
                 for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++)
                         if (regDomainPairs[i].regDmnEnum == rd)
                                 return true;
@@ -477,6 +483,11 @@ ath_regd_init(struct ath_regulatory *reg,
         struct country_code_to_enum_rd *country = NULL;
         u16 regdmn;
 
+        if (!reg)
+                return -EINVAL;
+
+        printk(KERN_DEBUG "ath: EEPROM regdomain: 0x%0x\n", reg->current_rd);
+
         if (!ath_regd_is_eeprom_valid(reg)) {
                 printk(KERN_ERR "ath: Invalid EEPROM contents\n");
                 return -EINVAL;
@@ -486,20 +497,30 @@ ath_regd_init(struct ath_regulatory *reg,
         reg->country_code = ath_regd_get_default_country(regdmn);
 
         if (reg->country_code == CTRY_DEFAULT &&
-            regdmn == CTRY_DEFAULT)
+            regdmn == CTRY_DEFAULT) {
+                printk(KERN_DEBUG "ath: EEPROM indicates default "
+                       "country code should be used\n");
                 reg->country_code = CTRY_UNITED_STATES;
+        }
 
         if (reg->country_code == CTRY_DEFAULT) {
                 country = NULL;
         } else {
+                printk(KERN_DEBUG "ath: doing EEPROM country->regdmn "
+                       "map search\n");
                 country = ath_regd_find_country(reg->country_code);
                 if (country == NULL) {
                         printk(KERN_DEBUG
-                                "ath: Country is NULL!!!!, cc= %d\n",
+                                "ath: no valid country maps found for "
+                                "country code: 0x%0x\n",
                                 reg->country_code);
                         return -EINVAL;
-                } else
+                } else {
                         regdmn = country->regDmnEnum;
+                        printk(KERN_DEBUG "ath: country maps to "
+                               "regdmn code: 0x%0x\n",
+                               regdmn);
+                }
         }
 
         reg->regpair = ath_get_regpair(regdmn);
@@ -523,7 +544,7 @@ ath_regd_init(struct ath_regulatory *reg,
 
         printk(KERN_DEBUG "ath: Country alpha2 being used: %c%c\n",
                 reg->alpha2[0], reg->alpha2[1]);
-        printk(KERN_DEBUG "ath: Regpair detected: 0x%0x\n",
+        printk(KERN_DEBUG "ath: Regpair used: 0x%0x\n",
                 reg->regpair->regDmnEnum);
 
         ath_regd_init_wiphy(reg, wiphy, reg_notifier);