The first chunk fixes a debugging assert to print a warning about array underflows.
The second chunk corrects a potential array underflow. I also removed an assert
in the second chunk because it can no longer happen.
Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>
---
This was found by a static check and compile tested only. Please review carefully.
diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c
index f14deb0..ead2f2c 100644
--- a/drivers/net/wireless/zd1211rw/zd_mac.c
+++ b/drivers/net/wireless/zd1211rw/zd_mac.c
@@ -350,7 +350,7 @@ static void zd_mac_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb,
first_idx = info->status.rates[0].idx;
ZD_ASSERT(0<=first_idx && first_idx<ARRAY_SIZE(zd_retry_rates));
retries = &zd_retry_rates[first_idx];
- ZD_ASSERT(0<=retry && retry<=retries->count);
+ ZD_ASSERT(1 <= retry && retry <= retries->count);
info->status.rates[0].idx = retries->rate[0];
info->status.rates[0].count = 1; // (retry > 1 ? 2 : 1);
@@ -360,7 +360,7 @@ static void zd_mac_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb,
info->status.rates[i].count = 1; // ((i==retry-1) && success ? 1:2);
}
for (; i<IEEE80211_TX_MAX_RATES && i<retry; i++) {
- info->status.rates[i].idx = retries->rate[retry-1];
+ info->status.rates[i].idx = retries->rate[retry - 1];
info->status.rates[i].count = 1; // (success ? 1:2);
}
if (i<IEEE80211_TX_MAX_RATES)
@@ -424,12 +424,10 @@ void zd_mac_tx_failed(struct urb *urb)
first_idx = info->status.rates[0].idx;
ZD_ASSERT(0<=first_idx && first_idx<ARRAY_SIZE(zd_retry_rates));
retries = &zd_retry_rates[first_idx];
- if (retry < 0 || retry > retries->count) {
+ if (retry <= 0 || retry > retries->count)
continue;
- }
- ZD_ASSERT(0<=retry && retry<=retries->count);
- final_idx = retries->rate[retry-1];
+ final_idx = retries->rate[retry - 1];
final_rate = zd_rates[final_idx].hw_value;
if (final_rate != tx_status->rate) {
--
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