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path: root/drivers/net/wireless/p54/eeprom.c
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Diffstat (limited to 'drivers/net/wireless/p54/eeprom.c')
-rw-r--r--drivers/net/wireless/p54/eeprom.c105
1 files changed, 58 insertions, 47 deletions
diff --git a/drivers/net/wireless/p54/eeprom.c b/drivers/net/wireless/p54/eeprom.c
index 187e263b045a..35b09aa0529b 100644
--- a/drivers/net/wireless/p54/eeprom.c
+++ b/drivers/net/wireless/p54/eeprom.c
@@ -23,6 +23,7 @@
#include <linux/slab.h>
#include <net/mac80211.h>
+#include <linux/crc-ccitt.h>
#include "p54.h"
#include "eeprom.h"
@@ -149,16 +150,15 @@ static int p54_generate_band(struct ieee80211_hw *dev,
continue;
if (list->channels[i].data != CHAN_HAS_ALL) {
- printk(KERN_ERR "%s:%s%s%s is/are missing for "
- "channel:%d [%d MHz].\n",
- wiphy_name(dev->wiphy),
- (list->channels[i].data & CHAN_HAS_CAL ? "" :
- " [iqauto calibration data]"),
- (list->channels[i].data & CHAN_HAS_LIMIT ? "" :
- " [output power limits]"),
- (list->channels[i].data & CHAN_HAS_CURVE ? "" :
- " [curve data]"),
- list->channels[i].index, list->channels[i].freq);
+ wiphy_err(dev->wiphy,
+ "%s%s%s is/are missing for channel:%d [%d MHz].\n",
+ (list->channels[i].data & CHAN_HAS_CAL ? "" :
+ " [iqauto calibration data]"),
+ (list->channels[i].data & CHAN_HAS_LIMIT ? "" :
+ " [output power limits]"),
+ (list->channels[i].data & CHAN_HAS_CURVE ? "" :
+ " [curve data]"),
+ list->channels[i].index, list->channels[i].freq);
continue;
}
@@ -168,9 +168,8 @@ static int p54_generate_band(struct ieee80211_hw *dev,
}
if (j == 0) {
- printk(KERN_ERR "%s: Disabling totally damaged %s band.\n",
- wiphy_name(dev->wiphy), (band == IEEE80211_BAND_2GHZ) ?
- "2 GHz" : "5 GHz");
+ wiphy_err(dev->wiphy, "Disabling totally damaged %d GHz band\n",
+ (band == IEEE80211_BAND_2GHZ) ? 2 : 5);
ret = -ENODATA;
goto err_out;
@@ -244,9 +243,9 @@ static int p54_generate_channel_lists(struct ieee80211_hw *dev)
if ((priv->iq_autocal_len != priv->curve_data->entries) ||
(priv->iq_autocal_len != priv->output_limit->entries))
- printk(KERN_ERR "%s: Unsupported or damaged EEPROM detected. "
- "You may not be able to use all channels.\n",
- wiphy_name(dev->wiphy));
+ wiphy_err(dev->wiphy,
+ "Unsupported or damaged EEPROM detected. "
+ "You may not be able to use all channels.\n");
max_channel_num = max_t(unsigned int, priv->output_limit->entries,
priv->iq_autocal_len);
@@ -262,8 +261,10 @@ static int p54_generate_channel_lists(struct ieee80211_hw *dev)
list->max_entries = max_channel_num;
list->channels = kzalloc(sizeof(struct p54_channel_entry) *
max_channel_num, GFP_KERNEL);
- if (!list->channels)
+ if (!list->channels) {
+ ret = -ENOMEM;
goto free;
+ }
for (i = 0; i < max_channel_num; i++) {
if (i < priv->iq_autocal_len) {
@@ -419,15 +420,14 @@ static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len,
int i;
if (len != (entry_size * num_entries)) {
- printk(KERN_ERR "%s: unknown rssi calibration data packing "
- " type:(%x) len:%d.\n",
- wiphy_name(dev->wiphy), type, len);
+ wiphy_err(dev->wiphy,
+ "unknown rssi calibration data packing type:(%x) len:%d.\n",
+ type, len);
print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE,
data, len);
- printk(KERN_ERR "%s: please report this issue.\n",
- wiphy_name(dev->wiphy));
+ wiphy_err(dev->wiphy, "please report this issue.\n");
return;
}
@@ -445,15 +445,14 @@ static void p54_parse_default_country(struct ieee80211_hw *dev,
struct pda_country *country;
if (len != sizeof(*country)) {
- printk(KERN_ERR "%s: found possible invalid default country "
- "eeprom entry. (entry size: %d)\n",
- wiphy_name(dev->wiphy), len);
+ wiphy_err(dev->wiphy,
+ "found possible invalid default country eeprom entry. (entry size: %d)\n",
+ len);
print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,
data, len);
- printk(KERN_ERR "%s: please report this issue.\n",
- wiphy_name(dev->wiphy));
+ wiphy_err(dev->wiphy, "please report this issue.\n");
return;
}
@@ -478,8 +477,8 @@ static int p54_convert_output_limits(struct ieee80211_hw *dev,
return -EINVAL;
if (data[0] != 0) {
- printk(KERN_ERR "%s: unknown output power db revision:%x\n",
- wiphy_name(dev->wiphy), data[0]);
+ wiphy_err(dev->wiphy, "unknown output power db revision:%x\n",
+ data[0]);
return -EINVAL;
}
@@ -544,6 +543,7 @@ int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
int err;
u8 *end = (u8 *)eeprom + len;
u16 synth = 0;
+ u16 crc16 = ~0;
wrap = (struct eeprom_pda_wrap *) eeprom;
entry = (void *)wrap->data + le16_to_cpu(wrap->len);
@@ -587,10 +587,9 @@ int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
err = p54_convert_rev1(dev, curve_data);
break;
default:
- printk(KERN_ERR "%s: unknown curve data "
- "revision %d\n",
- wiphy_name(dev->wiphy),
- curve_data->cal_method_rev);
+ wiphy_err(dev->wiphy,
+ "unknown curve data revision %d\n",
+ curve_data->cal_method_rev);
err = -ENODEV;
break;
}
@@ -599,13 +598,13 @@ int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
}
break;
case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
- priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
+ priv->iq_autocal = kmemdup(entry->data, data_len,
+ GFP_KERNEL);
if (!priv->iq_autocal) {
err = -ENOMEM;
goto err;
}
- memcpy(priv->iq_autocal, entry->data, data_len);
priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
break;
case PDR_DEFAULT_COUNTRY:
@@ -660,20 +659,33 @@ int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
}
break;
case PDR_END:
- /* make it overrun */
- entry_len = len;
+ crc16 = ~crc_ccitt(crc16, (u8 *) entry, sizeof(*entry));
+ if (crc16 != le16_to_cpup((__le16 *)entry->data)) {
+ wiphy_err(dev->wiphy, "eeprom failed checksum "
+ "test!\n");
+ err = -ENOMSG;
+ goto err;
+ } else {
+ goto good_eeprom;
+ }
break;
default:
break;
}
- entry = (void *)entry + (entry_len + 1)*2;
+ crc16 = crc_ccitt(crc16, (u8 *)entry, (entry_len + 1) * 2);
+ entry = (void *)entry + (entry_len + 1) * 2;
}
+ wiphy_err(dev->wiphy, "unexpected end of eeprom data.\n");
+ err = -ENODATA;
+ goto err;
+
+good_eeprom:
if (!synth || !priv->iq_autocal || !priv->output_limit ||
!priv->curve_data) {
- printk(KERN_ERR "%s: not all required entries found in eeprom!\n",
- wiphy_name(dev->wiphy));
+ wiphy_err(dev->wiphy,
+ "not all required entries found in eeprom!\n");
err = -EINVAL;
goto err;
}
@@ -699,15 +711,15 @@ int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
u8 perm_addr[ETH_ALEN];
- printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
- wiphy_name(dev->wiphy));
+ wiphy_warn(dev->wiphy,
+ "Invalid hwaddr! Using randomly generated MAC addr\n");
random_ether_addr(perm_addr);
SET_IEEE80211_PERM_ADDR(dev, perm_addr);
}
- printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
- wiphy_name(dev->wiphy), dev->wiphy->perm_addr, priv->version,
- p54_rf_chips[priv->rxhw]);
+ wiphy_info(dev->wiphy, "hwaddr %pM, MAC:isl38%02x RF:%s\n",
+ dev->wiphy->perm_addr, priv->version,
+ p54_rf_chips[priv->rxhw]);
return 0;
@@ -719,8 +731,7 @@ err:
priv->output_limit = NULL;
priv->curve_data = NULL;
- printk(KERN_ERR "%s: eeprom parse failed!\n",
- wiphy_name(dev->wiphy));
+ wiphy_err(dev->wiphy, "eeprom parse failed!\n");
return err;
}
EXPORT_SYMBOL_GPL(p54_parse_eeprom);
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-06-03 15:22:03 +0200