From 00bca7e2f2b58b93ce408e92d18a8c42bbe8d6e5 Mon Sep 17 00:00:00 2001 From: Rajkumar Manoharan Date: Fri, 15 Apr 2011 12:28:52 +0530 Subject: [PATCH] ath9k_htc: Add debugfs support to change debug mask Signed-off-by: Rajkumar Manoharan Acked-by: Sujith Manoharan Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/htc.h | 1 + .../net/wireless/ath/ath9k/htc_drv_debug.c | 49 +++++++++++++++++++ 2 files changed, 50 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h index cc5d0a4b9da2..852cdcfbcbb6 100644 --- a/drivers/net/wireless/ath/ath9k/htc.h +++ b/drivers/net/wireless/ath/ath9k/htc.h @@ -366,6 +366,7 @@ struct ath9k_debug { struct dentry *debugfs_recv; struct dentry *debugfs_slot; struct dentry *debugfs_queue; + struct dentry *debugfs_debug; struct ath_tx_stats tx_stats; struct ath_rx_stats rx_stats; }; diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_debug.c b/drivers/net/wireless/ath/ath9k/htc_drv_debug.c index 8d0de60e0c27..7394a1b9882a 100644 --- a/drivers/net/wireless/ath/ath9k/htc_drv_debug.c +++ b/drivers/net/wireless/ath/ath9k/htc_drv_debug.c @@ -435,6 +435,47 @@ static const struct file_operations fops_queue = { .llseek = default_llseek, }; +static ssize_t read_file_debug(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath9k_htc_priv *priv = file->private_data; + struct ath_common *common = ath9k_hw_common(priv->ah); + char buf[32]; + unsigned int len; + + len = sprintf(buf, "0x%08x\n", common->debug_mask); + return simple_read_from_buffer(user_buf, count, ppos, buf, len); +} + +static ssize_t write_file_debug(struct file *file, const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath9k_htc_priv *priv = file->private_data; + struct ath_common *common = ath9k_hw_common(priv->ah); + unsigned long mask; + char buf[32]; + ssize_t len; + + len = min(count, sizeof(buf) - 1); + if (copy_from_user(buf, user_buf, len)) + return -EFAULT; + + buf[len] = '\0'; + if (strict_strtoul(buf, 0, &mask)) + return -EINVAL; + + common->debug_mask = mask; + return count; +} + +static const struct file_operations fops_debug = { + .read = read_file_debug, + .write = write_file_debug, + .open = ath9k_debugfs_open, + .owner = THIS_MODULE, + .llseek = default_llseek, +}; + int ath9k_htc_init_debug(struct ath_hw *ah) { struct ath_common *common = ath9k_hw_common(ah); @@ -493,6 +534,13 @@ int ath9k_htc_init_debug(struct ath_hw *ah) if (!priv->debug.debugfs_queue) goto err; + priv->debug.debugfs_debug = debugfs_create_file("debug", + S_IRUSR | S_IWUSR, + priv->debug.debugfs_phy, + priv, &fops_debug); + if (!priv->debug.debugfs_debug) + goto err; + return 0; err: @@ -512,6 +560,7 @@ void ath9k_htc_exit_debug(struct ath_hw *ah) debugfs_remove(priv->debug.debugfs_tgt_int_stats); debugfs_remove(priv->debug.debugfs_tgt_tx_stats); debugfs_remove(priv->debug.debugfs_tgt_rx_stats); + debugfs_remove(priv->debug.debugfs_debug); debugfs_remove(priv->debug.debugfs_phy); } -- 2.20.1