From 03dd4cb26d967f9588437b0fc9cc0e8353322bb7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Fabian=20Silva=20Delgado?= Date: Fri, 25 Mar 2016 03:53:42 -0300 Subject: Linux-libre 4.5-gnu --- drivers/net/wireless/ath/ath9k/eeprom_4k.c | 76 ++++++------------------------ 1 file changed, 15 insertions(+), 61 deletions(-) (limited to 'drivers/net/wireless/ath/ath9k/eeprom_4k.c') diff --git a/drivers/net/wireless/ath/ath9k/eeprom_4k.c b/drivers/net/wireless/ath/ath9k/eeprom_4k.c index 4773da6dc..5da0826bf 100644 --- a/drivers/net/wireless/ath/ath9k/eeprom_4k.c +++ b/drivers/net/wireless/ath/ath9k/eeprom_4k.c @@ -177,74 +177,30 @@ static u32 ath9k_hw_4k_dump_eeprom(struct ath_hw *ah, bool dump_base_hdr, } #endif - -#undef SIZE_EEPROM_4K - static int ath9k_hw_4k_check_eeprom(struct ath_hw *ah) { -#define EEPROM_4K_SIZE (sizeof(struct ar5416_eeprom_4k) / sizeof(u16)) - struct ath_common *common = ath9k_hw_common(ah); struct ar5416_eeprom_4k *eep = &ah->eeprom.map4k; - u16 *eepdata, temp, magic, magic2; - u32 sum = 0, el; - bool need_swap = false; - int i, addr; + u32 el; + bool need_swap; + int i, err; - - if (!ath9k_hw_use_flash(ah)) { - if (!ath9k_hw_nvram_read(ah, AR5416_EEPROM_MAGIC_OFFSET, - &magic)) { - ath_err(common, "Reading Magic # failed\n"); - return false; - } - - ath_dbg(common, EEPROM, "Read Magic = 0x%04X\n", magic); - - if (magic != AR5416_EEPROM_MAGIC) { - magic2 = swab16(magic); - - if (magic2 == AR5416_EEPROM_MAGIC) { - need_swap = true; - eepdata = (u16 *) (&ah->eeprom); - - for (addr = 0; addr < EEPROM_4K_SIZE; addr++) { - temp = swab16(*eepdata); - *eepdata = temp; - eepdata++; - } - } else { - ath_err(common, - "Invalid EEPROM Magic. Endianness mismatch.\n"); - return -EINVAL; - } - } - } - - ath_dbg(common, EEPROM, "need_swap = %s\n", - need_swap ? "True" : "False"); + err = ath9k_hw_nvram_swap_data(ah, &need_swap, SIZE_EEPROM_4K); + if (err) + return err; if (need_swap) - el = swab16(ah->eeprom.map4k.baseEepHeader.length); - else - el = ah->eeprom.map4k.baseEepHeader.length; - - if (el > sizeof(struct ar5416_eeprom_4k)) - el = sizeof(struct ar5416_eeprom_4k) / sizeof(u16); + el = swab16(eep->baseEepHeader.length); else - el = el / sizeof(u16); + el = eep->baseEepHeader.length; - eepdata = (u16 *)(&ah->eeprom); - - for (i = 0; i < el; i++) - sum ^= *eepdata++; + el = min(el / sizeof(u16), SIZE_EEPROM_4K); + if (!ath9k_hw_nvram_validate_checksum(ah, el)) + return -EINVAL; if (need_swap) { u32 integer; u16 word; - ath_dbg(common, EEPROM, - "EEPROM Endianness is not native.. Changing\n"); - word = swab16(eep->baseEepHeader.length); eep->baseEepHeader.length = word; @@ -283,17 +239,15 @@ static int ath9k_hw_4k_check_eeprom(struct ath_hw *ah) } } - if (sum != 0xffff || ah->eep_ops->get_eeprom_ver(ah) != AR5416_EEP_VER || - ah->eep_ops->get_eeprom_rev(ah) < AR5416_EEP_NO_BACK_VER) { - ath_err(common, "Bad EEPROM checksum 0x%x or revision 0x%04x\n", - sum, ah->eep_ops->get_eeprom_ver(ah)); + if (!ath9k_hw_nvram_check_version(ah, AR5416_EEP_VER, + AR5416_EEP_NO_BACK_VER)) return -EINVAL; - } return 0; -#undef EEPROM_4K_SIZE } +#undef SIZE_EEPROM_4K + static u32 ath9k_hw_4k_get_eeprom(struct ath_hw *ah, enum eeprom_param param) { -- cgit v1.2.3