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ath9k_htc: Add debugfs support to change debug mask

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Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Acked-by: Sujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rajkumar Manoharan 2011-04-15 12:28:52 +05:30 committed by John W. Linville
parent 2290a9c35d
commit 00bca7e2f2
2 changed files with 50 additions and 0 deletions
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1
drivers/net/wireless/ath/ath9k/htc.h
View File

@ -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;
};

49
drivers/net/wireless/ath/ath9k/htc_drv_debug.c
View File

@ -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);
}