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ath9k: ignore EEPROM mismatch on flash based devices (fixes #21611)

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Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 48438
This commit is contained in:
Felix Fietkau 2016-01-21 15:37:43 +00:00
parent 16ea0369e9
commit df9275b25e
1 changed files with 38 additions and 0 deletions
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package/kernel/mac80211/patches/310-ath9k_hw-ignore-eeprom-magic-mismatch-on-flash-based.patch Normal file
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From: Felix Fietkau <nbd@openwrt.org>
Date: Thu, 21 Jan 2016 16:28:44 +0100
Subject: [PATCH] ath9k_hw: ignore eeprom magic mismatch on flash based devices
Many AR913x based devices (maybe others too) do not have a valid EEPROM
magic in their calibration data partition.
Fixes: 6fa658fd5ab2 ("ath9k: Simplify and fix eeprom endianness swapping")
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
--- a/drivers/net/wireless/ath/ath9k/eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/eeprom.c
@@ -150,18 +150,18 @@ int ath9k_hw_nvram_swap_data(struct ath_
return -EIO;
}
- if (magic == AR5416_EEPROM_MAGIC) {
- *swap_needed = false;
- } else if (swab16(magic) == AR5416_EEPROM_MAGIC) {
+ *swap_needed = false;
+ if (swab16(magic) == AR5416_EEPROM_MAGIC) {
if (ah->ah_flags & AH_NO_EEP_SWAP) {
ath_info(common,
"Ignoring endianness difference in EEPROM magic bytes.\n");
-
- *swap_needed = false;
} else {
*swap_needed = true;
}
- } else {
+ } else if (magic != AR5416_EEPROM_MAGIC) {
+ if (ath9k_hw_use_flash(ah))
+ return 0;
+
ath_err(common,
"Invalid EEPROM Magic (0x%04x).\n", magic);
return -EINVAL;