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Commit 00bca7e2 authored by Rajkumar Manoharan's avatar Rajkumar Manoharan Committed by John W. Linville
Browse files

ath9k_htc: Add debugfs support to change debug mask 



Signed-off-by: default avatarRajkumar Manoharan <rmanoharan@atheros.com>
Acked-by: default avatarSujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 2290a9c3

drivers/net/wireless/ath/ath9k/htc.h

+1 −0
Original line number Diff line number Diff line
@@ -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;

};

drivers/net/wireless/ath/ath9k/htc_drv_debug.c

+49 −0
Original line number Diff line number Diff line
@@ -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);

}