ath9k: Remove 'stations' debugfs file

The 'stations' debugfs file has multiple issues. It doesn't scale
to an arbitrary number of associated stations and allocating
64K is not elegant either. Now that changes have been made in
mac80211 to support dynamic creation/deletion of driver-specific
debugfs files on station addition/removal, remove this file and
make use of the mac80211 hooks (which will be done in a sebsequent
patch).

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 0 insertions, 74 deletions

diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index 086dee841622..939308c25712 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -602,71 +602,6 @@ static ssize_t read_file_queues(struct file *file, char __user *user_buf,
         return retval;
 }
 
-static ssize_t read_file_stations(struct file *file, char __user *user_buf,
-                                  size_t count, loff_t *ppos)
-{
-        struct ath_softc *sc = file->private_data;
-        char *buf;
-        unsigned int len = 0, size = 64000;
-        struct ath_node *an = NULL;
-        ssize_t retval = 0;
-        int q;
-
-        buf = kzalloc(size, GFP_KERNEL);
-        if (buf == NULL)
-                return -ENOMEM;
-
-        len += snprintf(buf + len, size - len,
-                        "Stations:\n"
-                        " tid: addr sched paused buf_q-empty an ac baw\n"
-                        " ac: addr sched tid_q-empty txq\n");
-
-        spin_lock(&sc->nodes_lock);
-        list_for_each_entry(an, &sc->nodes, list) {
-                unsigned short ma = an->maxampdu;
-                if (ma == 0)
-                        ma = 65535; /* see ath_lookup_rate */
-                len += snprintf(buf + len, size - len,
-                                "iface: %pM  sta: %pM max-ampdu: %hu mpdu-density: %uus\n",
-                                an->vif->addr, an->sta->addr, ma,
-                                (unsigned int)(an->mpdudensity));
-                if (len >= size)
-                        goto done;
-
-                for (q = 0; q < WME_NUM_TID; q++) {
-                        struct ath_atx_tid *tid = &(an->tid[q]);
-                        len += snprintf(buf + len, size - len,
-                                        " tid: %p %s %s %i %p %p %hu\n",
-                                        tid, tid->sched ? "sched" : "idle",
-                                        tid->paused ? "paused" : "running",
-                                        skb_queue_empty(&tid->buf_q),
-                                        tid->an, tid->ac, tid->baw_size);
-                        if (len >= size)
-                                goto done;
-                }
-
-                for (q = 0; q < IEEE80211_NUM_ACS; q++) {
-                        struct ath_atx_ac *ac = &(an->ac[q]);
-                        len += snprintf(buf + len, size - len,
-                                        " ac: %p %s %i %p\n",
-                                        ac, ac->sched ? "sched" : "idle",
-                                        list_empty(&ac->tid_q), ac->txq);
-                        if (len >= size)
-                                goto done;
-                }
-        }
-
-done:
-        spin_unlock(&sc->nodes_lock);
-        if (len > size)
-                len = size;
-
-        retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
-        kfree(buf);
-
-        return retval;
-}
-
 static ssize_t read_file_misc(struct file *file, char __user *user_buf,
                               size_t count, loff_t *ppos)
 {
@@ -879,13 +814,6 @@ static const struct file_operations fops_queues = {
         .llseek = default_llseek,
 };
 
-static const struct file_operations fops_stations = {
-        .read = read_file_stations,
-        .open = simple_open,
-        .owner = THIS_MODULE,
-        .llseek = default_llseek,
-};
-
 static const struct file_operations fops_misc = {
         .read = read_file_misc,
         .open = simple_open,
@@ -1614,8 +1542,6 @@ int ath9k_init_debug(struct ath_hw *ah)
                            &sc->tx.txq_max_pending[IEEE80211_AC_VI]);
         debugfs_create_u32("qlen_vo", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
                            &sc->tx.txq_max_pending[IEEE80211_AC_VO]);
-        debugfs_create_file("stations", S_IRUSR, sc->debug.debugfs_phy, sc,
-                            &fops_stations);
         debugfs_create_file("misc", S_IRUSR, sc->debug.debugfs_phy, sc,
                             &fops_misc);
         debugfs_create_file("reset", S_IRUSR, sc->debug.debugfs_phy, sc,