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bes2600: Patch D — atomicize ba_lock counters, drop the spinlock (#7)

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This commit was merged in pull request #7.
This commit is contained in:
Markus Fritsche
2026-05-07 22:19:53 +00:00
parent 25c0ed8c57 44b296647b
commit 3dbabf3092
5 changed files with 85 additions and 56 deletions
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bes2600/debug.c
+8 -5
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@@ -110,17 +110,20 @@ static int bes2600_status_show_common(struct seq_file *seq, void *v)
int ba_cnt, ba_acc, ba_cnt_rx, ba_acc_rx, ba_avg = 0, ba_avg_rx = 0;
bool ba_ena;
spin_lock_bh(&hw_priv->ba_lock);
ba_cnt = hw_priv->debug->ba_cnt;
ba_acc = hw_priv->debug->ba_acc;
/*
* Patch D: ba_lock removed. hw_priv->debug->ba_* are written only
* by the timer callback (single writer); reading without a lock is
* fine for stats. ba_ena is atomic_t.
*/
ba_cnt = hw_priv->debug->ba_cnt;
ba_acc = hw_priv->debug->ba_acc;
ba_cnt_rx = hw_priv->debug->ba_cnt_rx;
ba_acc_rx = hw_priv->debug->ba_acc_rx;
ba_ena = hw_priv->ba_ena;
ba_ena = !!atomic_read(&hw_priv->ba_ena);
if (ba_cnt)
ba_avg = ba_acc / ba_cnt;
if (ba_cnt_rx)
ba_avg_rx = ba_acc_rx / ba_cnt_rx;
spin_unlock_bh(&hw_priv->ba_lock);
seq_puts(seq, "BES2600 Wireless LAN driver status\n");
seq_printf(seq, "Hardware: %d.%d\n",