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ath9k: fall back to OTP ROM if the platform data does not contain valid eeprom data

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32044 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2012-06-04 10:42:03 +00:00
parent 43bdeca579
commit 5bfb119980
1 changed files with 25 additions and 0 deletions
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25
package/mac80211/patches/560-ath9k_ar9003_otp_fallback.patch Normal file
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@ -0,0 +1,25 @@
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -3260,10 +3260,20 @@ static int ar9300_eeprom_restore_interna
int it;
u16 checksum, mchecksum;
struct ath_common *common = ath9k_hw_common(ah);
+ struct ar9300_eeprom *eep;
eeprom_read_op read;
- if (ath9k_hw_use_flash(ah))
- return ar9300_eeprom_restore_flash(ah, mptr, mdata_size);
+ if (ath9k_hw_use_flash(ah)) {
+ u8 txrx;
+
+ ar9300_eeprom_restore_flash(ah, mptr, mdata_size);
+
+ /* check if eeprom contains valid data */
+ eep = (struct ar9300_eeprom *) mptr;
+ txrx = eep->baseEepHeader.txrxMask;
+ if (txrx != 0 && txrx != 0xff)
+ return 0;
+ }
word = kzalloc(2048, GFP_KERNEL);
if (!word)