wl1251: add tx queue status to debugfs

Sometimes when debugging the state is good info.

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 24 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1251.h b/drivers/net/wireless/wl12xx/wl1251.h
index 054533f7a12..6301578d156 100644
--- a/drivers/net/wireless/wl12xx/wl1251.h
+++ b/drivers/net/wireless/wl12xx/wl1251.h
@@ -247,6 +247,7 @@ struct wl1251_debugfs {
         struct dentry *rxpipe_tx_xfr_host_int_trig_rx_data;
 
         struct dentry *tx_queue_len;
+        struct dentry *tx_queue_status;
 
         struct dentry *retry_count;
         struct dentry *excessive_retries;
diff --git a/drivers/net/wireless/wl12xx/wl1251_debugfs.c b/drivers/net/wireless/wl12xx/wl1251_debugfs.c
index a00723059f8..0ccba57fb9f 100644
--- a/drivers/net/wireless/wl12xx/wl1251_debugfs.c
+++ b/drivers/net/wireless/wl12xx/wl1251_debugfs.c
@@ -237,6 +237,27 @@ static const struct file_operations tx_queue_len_ops = {
         .open = wl1251_open_file_generic,
 };
 
+static ssize_t tx_queue_status_read(struct file *file, char __user *userbuf,
+                                    size_t count, loff_t *ppos)
+{
+        struct wl1251 *wl = file->private_data;
+        char buf[3], status;
+        int len;
+
+        if (wl->tx_queue_stopped)
+                status = 's';
+        else
+                status = 'r';
+
+        len = scnprintf(buf, sizeof(buf), "%c\n", status);
+        return simple_read_from_buffer(userbuf, count, ppos, buf, len);
+}
+
+static const struct file_operations tx_queue_status_ops = {
+        .read = tx_queue_status_read,
+        .open = wl1251_open_file_generic,
+};
+
 static void wl1251_debugfs_delete_files(struct wl1251 *wl)
 {
         DEBUGFS_FWSTATS_DEL(tx, internal_desc_overflow);
@@ -331,6 +352,7 @@ static void wl1251_debugfs_delete_files(struct wl1251 *wl)
         DEBUGFS_FWSTATS_DEL(rxpipe, tx_xfr_host_int_trig_rx_data);
 
         DEBUGFS_DEL(tx_queue_len);
+        DEBUGFS_DEL(tx_queue_status);
         DEBUGFS_DEL(retry_count);
         DEBUGFS_DEL(excessive_retries);
 }
@@ -431,6 +453,7 @@ static int wl1251_debugfs_add_files(struct wl1251 *wl)
         DEBUGFS_FWSTATS_ADD(rxpipe, tx_xfr_host_int_trig_rx_data);
 
         DEBUGFS_ADD(tx_queue_len, wl->debugfs.rootdir);
+        DEBUGFS_ADD(tx_queue_status, wl->debugfs.rootdir);
         DEBUGFS_ADD(retry_count, wl->debugfs.rootdir);
         DEBUGFS_ADD(excessive_retries, wl->debugfs.rootdir);