ath5k: Fix queue debug file

Take txq lock in debug file and fix reporting of used buffers.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath5k/debug.c b/drivers/net/wireless/ath/ath5k/debug.c
index 1b7c6d7..b2c610b 100644 (file)
--- a/drivers/net/wireless/ath/ath5k/debug.c
+++ b/drivers/net/wireless/ath/ath5k/debug.c
@@ -763,7 +763,7 @@ static ssize_t read_file_queue(struct file *file, char __user *user_buf,
 
        struct ath5k_txq *txq;
        struct ath5k_buf *bf, *bf0;
-       int i, n = 0;
+       int i, n;
 
        len += snprintf(buf+len, sizeof(buf)-len,
                        "available txbuffers: %d\n", sc->txbuf_len);
@@ -777,9 +777,14 @@ static ssize_t read_file_queue(struct file *file, char __user *user_buf,
                if (!txq->setup)
                        continue;
 
+               n = 0;
+               spin_lock_bh(&txq->lock);
                list_for_each_entry_safe(bf, bf0, &txq->q, list)
                        n++;
-               len += snprintf(buf+len, sizeof(buf)-len, "  len: %d\n", n);
+               spin_unlock_bh(&txq->lock);
+
+               len += snprintf(buf+len, sizeof(buf)-len,
+                               "  len: %d bufs: %d\n", txq->txq_len, n);
        }
 
        if (len > sizeof(buf))