// SPDX-License-Identifier: GPL-2.0-or-later
|
/*
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Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
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<http://rt2x00.serialmonkey.com>
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|
*/
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/*
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Module: rt2x00lib
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Abstract: rt2x00 debugfs specific routines.
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*/
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#include <linux/debugfs.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/poll.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/uaccess.h>
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#include "rt2x00.h"
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#include "rt2x00lib.h"
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#include "rt2x00dump.h"
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#define MAX_LINE_LENGTH 64
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struct rt2x00debug_crypto {
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unsigned long success;
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unsigned long icv_error;
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unsigned long mic_error;
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unsigned long key_error;
|
};
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|
struct rt2x00debug_intf {
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/*
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* Pointer to driver structure where
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* this debugfs entry belongs to.
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*/
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struct rt2x00_dev *rt2x00dev;
|
|
/*
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* Reference to the rt2x00debug structure
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* which can be used to communicate with
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* the registers.
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*/
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const struct rt2x00debug *debug;
|
|
/*
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* Debugfs entries for:
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* - driver folder
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* - driver file
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* - chipset file
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* - device state flags file
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* - device capability flags file
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* - hardware restart file
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* - register folder
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* - csr offset/value files
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* - eeprom offset/value files
|
* - bbp offset/value files
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* - rf offset/value files
|
* - rfcsr offset/value files
|
* - queue folder
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* - frame dump file
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* - queue stats file
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* - crypto stats file
|
*/
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struct dentry *driver_folder;
|
|
/*
|
* The frame dump file only allows a single reader,
|
* so we need to store the current state here.
|
*/
|
unsigned long frame_dump_flags;
|
#define FRAME_DUMP_FILE_OPEN 1
|
|
/*
|
* We queue each frame before dumping it to the user,
|
* per read command we will pass a single skb structure
|
* so we should be prepared to queue multiple sk buffers
|
* before sending it to userspace.
|
*/
|
struct sk_buff_head frame_dump_skbqueue;
|
wait_queue_head_t frame_dump_waitqueue;
|
|
/*
|
* HW crypto statistics.
|
* All statistics are stored separately per cipher type.
|
*/
|
struct rt2x00debug_crypto crypto_stats[CIPHER_MAX];
|
|
/*
|
* Driver and chipset files will use a data buffer
|
* that has been created in advance. This will simplify
|
* the code since we can use the debugfs functions.
|
*/
|
struct debugfs_blob_wrapper driver_blob;
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struct debugfs_blob_wrapper chipset_blob;
|
|
/*
|
* Requested offset for each register type.
|
*/
|
unsigned int offset_csr;
|
unsigned int offset_eeprom;
|
unsigned int offset_bbp;
|
unsigned int offset_rf;
|
unsigned int offset_rfcsr;
|
};
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|
void rt2x00debug_update_crypto(struct rt2x00_dev *rt2x00dev,
|
struct rxdone_entry_desc *rxdesc)
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{
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struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
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enum cipher cipher = rxdesc->cipher;
|
enum rx_crypto status = rxdesc->cipher_status;
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|
if (cipher == CIPHER_TKIP_NO_MIC)
|
cipher = CIPHER_TKIP;
|
if (cipher == CIPHER_NONE || cipher >= CIPHER_MAX)
|
return;
|
|
/* Remove CIPHER_NONE index */
|
cipher--;
|
|
intf->crypto_stats[cipher].success += (status == RX_CRYPTO_SUCCESS);
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intf->crypto_stats[cipher].icv_error += (status == RX_CRYPTO_FAIL_ICV);
|
intf->crypto_stats[cipher].mic_error += (status == RX_CRYPTO_FAIL_MIC);
|
intf->crypto_stats[cipher].key_error += (status == RX_CRYPTO_FAIL_KEY);
|
}
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|
void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
|
enum rt2x00_dump_type type, struct queue_entry *entry)
|
{
|
struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
|
struct sk_buff *skb = entry->skb;
|
struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
|
struct sk_buff *skbcopy;
|
struct rt2x00dump_hdr *dump_hdr;
|
struct timespec64 timestamp;
|
u32 data_len;
|
|
if (likely(!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)))
|
return;
|
|
ktime_get_ts64(×tamp);
|
|
if (skb_queue_len(&intf->frame_dump_skbqueue) > 20) {
|
rt2x00_dbg(rt2x00dev, "txrx dump queue length exceeded\n");
|
return;
|
}
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|
data_len = skb->len;
|
if (skbdesc->flags & SKBDESC_DESC_IN_SKB)
|
data_len -= skbdesc->desc_len;
|
|
skbcopy = alloc_skb(sizeof(*dump_hdr) + skbdesc->desc_len + data_len,
|
GFP_ATOMIC);
|
if (!skbcopy) {
|
rt2x00_dbg(rt2x00dev, "Failed to copy skb for dump\n");
|
return;
|
}
|
|
dump_hdr = skb_put(skbcopy, sizeof(*dump_hdr));
|
dump_hdr->version = cpu_to_le32(DUMP_HEADER_VERSION);
|
dump_hdr->header_length = cpu_to_le32(sizeof(*dump_hdr));
|
dump_hdr->desc_length = cpu_to_le32(skbdesc->desc_len);
|
dump_hdr->data_length = cpu_to_le32(data_len);
|
dump_hdr->chip_rt = cpu_to_le16(rt2x00dev->chip.rt);
|
dump_hdr->chip_rf = cpu_to_le16(rt2x00dev->chip.rf);
|
dump_hdr->chip_rev = cpu_to_le16(rt2x00dev->chip.rev);
|
dump_hdr->type = cpu_to_le16(type);
|
dump_hdr->queue_index = entry->queue->qid;
|
dump_hdr->entry_index = entry->entry_idx;
|
dump_hdr->timestamp_sec = cpu_to_le32(timestamp.tv_sec);
|
dump_hdr->timestamp_usec = cpu_to_le32(timestamp.tv_nsec /
|
NSEC_PER_USEC);
|
|
if (!(skbdesc->flags & SKBDESC_DESC_IN_SKB))
|
skb_put_data(skbcopy, skbdesc->desc, skbdesc->desc_len);
|
skb_put_data(skbcopy, skb->data, skb->len);
|
|
skb_queue_tail(&intf->frame_dump_skbqueue, skbcopy);
|
wake_up_interruptible(&intf->frame_dump_waitqueue);
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|
/*
|
* Verify that the file has not been closed while we were working.
|
*/
|
if (!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags))
|
skb_queue_purge(&intf->frame_dump_skbqueue);
|
}
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EXPORT_SYMBOL_GPL(rt2x00debug_dump_frame);
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|
static int rt2x00debug_file_open(struct inode *inode, struct file *file)
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{
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struct rt2x00debug_intf *intf = inode->i_private;
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file->private_data = inode->i_private;
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|
if (!try_module_get(intf->debug->owner))
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return -EBUSY;
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return 0;
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}
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static int rt2x00debug_file_release(struct inode *inode, struct file *file)
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{
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struct rt2x00debug_intf *intf = file->private_data;
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module_put(intf->debug->owner);
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return 0;
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}
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static int rt2x00debug_open_queue_dump(struct inode *inode, struct file *file)
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{
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struct rt2x00debug_intf *intf = inode->i_private;
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int retval;
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retval = rt2x00debug_file_open(inode, file);
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if (retval)
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return retval;
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if (test_and_set_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)) {
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rt2x00debug_file_release(inode, file);
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return -EBUSY;
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}
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return 0;
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}
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static int rt2x00debug_release_queue_dump(struct inode *inode, struct file *file)
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{
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struct rt2x00debug_intf *intf = inode->i_private;
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skb_queue_purge(&intf->frame_dump_skbqueue);
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clear_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags);
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return rt2x00debug_file_release(inode, file);
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}
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static ssize_t rt2x00debug_read_queue_dump(struct file *file,
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char __user *buf,
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size_t length,
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loff_t *offset)
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{
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struct rt2x00debug_intf *intf = file->private_data;
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struct sk_buff *skb;
|
size_t status;
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int retval;
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if (file->f_flags & O_NONBLOCK)
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return -EAGAIN;
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retval =
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wait_event_interruptible(intf->frame_dump_waitqueue,
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(skb =
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skb_dequeue(&intf->frame_dump_skbqueue)));
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if (retval)
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return retval;
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status = min_t(size_t, skb->len, length);
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if (copy_to_user(buf, skb->data, status)) {
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status = -EFAULT;
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goto exit;
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}
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*offset += status;
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exit:
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kfree_skb(skb);
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|
return status;
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}
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static __poll_t rt2x00debug_poll_queue_dump(struct file *file,
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poll_table *wait)
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{
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struct rt2x00debug_intf *intf = file->private_data;
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poll_wait(file, &intf->frame_dump_waitqueue, wait);
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if (!skb_queue_empty(&intf->frame_dump_skbqueue))
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return EPOLLOUT | EPOLLWRNORM;
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return 0;
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}
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static const struct file_operations rt2x00debug_fop_queue_dump = {
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.owner = THIS_MODULE,
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.read = rt2x00debug_read_queue_dump,
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.poll = rt2x00debug_poll_queue_dump,
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.open = rt2x00debug_open_queue_dump,
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.release = rt2x00debug_release_queue_dump,
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.llseek = default_llseek,
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};
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static ssize_t rt2x00debug_read_queue_stats(struct file *file,
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char __user *buf,
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size_t length,
|
loff_t *offset)
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{
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struct rt2x00debug_intf *intf = file->private_data;
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struct data_queue *queue;
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unsigned long irqflags;
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unsigned int lines = 1 + intf->rt2x00dev->data_queues;
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size_t size;
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char *data;
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char *temp;
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if (*offset)
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return 0;
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data = kcalloc(lines, MAX_LINE_LENGTH, GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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temp = data +
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sprintf(data, "qid\tflags\t\tcount\tlimit\tlength\tindex\tdma done\tdone\n");
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queue_for_each(intf->rt2x00dev, queue) {
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spin_lock_irqsave(&queue->index_lock, irqflags);
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temp += sprintf(temp, "%d\t0x%.8x\t%d\t%d\t%d\t%d\t%d\t\t%d\n",
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queue->qid, (unsigned int)queue->flags,
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queue->count, queue->limit, queue->length,
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queue->index[Q_INDEX],
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queue->index[Q_INDEX_DMA_DONE],
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queue->index[Q_INDEX_DONE]);
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spin_unlock_irqrestore(&queue->index_lock, irqflags);
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}
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size = strlen(data);
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size = min(size, length);
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|
if (copy_to_user(buf, data, size)) {
|
kfree(data);
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return -EFAULT;
|
}
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kfree(data);
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*offset += size;
|
return size;
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}
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static const struct file_operations rt2x00debug_fop_queue_stats = {
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.owner = THIS_MODULE,
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.read = rt2x00debug_read_queue_stats,
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.open = rt2x00debug_file_open,
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.release = rt2x00debug_file_release,
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.llseek = default_llseek,
|
};
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#ifdef CONFIG_RT2X00_LIB_CRYPTO
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static ssize_t rt2x00debug_read_crypto_stats(struct file *file,
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char __user *buf,
|
size_t length,
|
loff_t *offset)
|
{
|
struct rt2x00debug_intf *intf = file->private_data;
|
static const char * const name[] = { "WEP64", "WEP128", "TKIP", "AES" };
|
char *data;
|
char *temp;
|
size_t size;
|
unsigned int i;
|
|
if (*offset)
|
return 0;
|
|
data = kcalloc(1 + CIPHER_MAX, MAX_LINE_LENGTH, GFP_KERNEL);
|
if (!data)
|
return -ENOMEM;
|
|
temp = data;
|
temp += sprintf(data, "cipher\tsuccess\ticv err\tmic err\tkey err\n");
|
|
for (i = 0; i < CIPHER_MAX; i++) {
|
temp += sprintf(temp, "%s\t%lu\t%lu\t%lu\t%lu\n", name[i],
|
intf->crypto_stats[i].success,
|
intf->crypto_stats[i].icv_error,
|
intf->crypto_stats[i].mic_error,
|
intf->crypto_stats[i].key_error);
|
}
|
|
size = strlen(data);
|
size = min(size, length);
|
|
if (copy_to_user(buf, data, size)) {
|
kfree(data);
|
return -EFAULT;
|
}
|
|
kfree(data);
|
|
*offset += size;
|
return size;
|
}
|
|
static const struct file_operations rt2x00debug_fop_crypto_stats = {
|
.owner = THIS_MODULE,
|
.read = rt2x00debug_read_crypto_stats,
|
.open = rt2x00debug_file_open,
|
.release = rt2x00debug_file_release,
|
.llseek = default_llseek,
|
};
|
#endif
|
|
#define RT2X00DEBUGFS_OPS_READ(__name, __format, __type) \
|
static ssize_t rt2x00debug_read_##__name(struct file *file, \
|
char __user *buf, \
|
size_t length, \
|
loff_t *offset) \
|
{ \
|
struct rt2x00debug_intf *intf = file->private_data; \
|
const struct rt2x00debug *debug = intf->debug; \
|
char line[16]; \
|
size_t size; \
|
unsigned int index = intf->offset_##__name; \
|
__type value; \
|
\
|
if (*offset) \
|
return 0; \
|
\
|
if (index >= debug->__name.word_count) \
|
return -EINVAL; \
|
\
|
index += (debug->__name.word_base / \
|
debug->__name.word_size); \
|
\
|
if (debug->__name.flags & RT2X00DEBUGFS_OFFSET) \
|
index *= debug->__name.word_size; \
|
\
|
value = debug->__name.read(intf->rt2x00dev, index); \
|
\
|
size = sprintf(line, __format, value); \
|
\
|
return simple_read_from_buffer(buf, length, offset, line, size); \
|
}
|
|
#define RT2X00DEBUGFS_OPS_WRITE(__name, __type) \
|
static ssize_t rt2x00debug_write_##__name(struct file *file, \
|
const char __user *buf,\
|
size_t length, \
|
loff_t *offset) \
|
{ \
|
struct rt2x00debug_intf *intf = file->private_data; \
|
const struct rt2x00debug *debug = intf->debug; \
|
char line[17]; \
|
size_t size; \
|
unsigned int index = intf->offset_##__name; \
|
__type value; \
|
\
|
if (*offset) \
|
return 0; \
|
\
|
if (index >= debug->__name.word_count) \
|
return -EINVAL; \
|
\
|
if (length > sizeof(line)) \
|
return -EINVAL; \
|
\
|
if (copy_from_user(line, buf, length)) \
|
return -EFAULT; \
|
line[16] = 0; \
|
\
|
size = strlen(line); \
|
value = simple_strtoul(line, NULL, 0); \
|
\
|
index += (debug->__name.word_base / \
|
debug->__name.word_size); \
|
\
|
if (debug->__name.flags & RT2X00DEBUGFS_OFFSET) \
|
index *= debug->__name.word_size; \
|
\
|
debug->__name.write(intf->rt2x00dev, index, value); \
|
\
|
*offset += size; \
|
return size; \
|
}
|
|
#define RT2X00DEBUGFS_OPS(__name, __format, __type) \
|
RT2X00DEBUGFS_OPS_READ(__name, __format, __type); \
|
RT2X00DEBUGFS_OPS_WRITE(__name, __type); \
|
\
|
static const struct file_operations rt2x00debug_fop_##__name = {\
|
.owner = THIS_MODULE, \
|
.read = rt2x00debug_read_##__name, \
|
.write = rt2x00debug_write_##__name, \
|
.open = rt2x00debug_file_open, \
|
.release = rt2x00debug_file_release, \
|
.llseek = generic_file_llseek, \
|
};
|
|
RT2X00DEBUGFS_OPS(csr, "0x%.8x\n", u32);
|
RT2X00DEBUGFS_OPS(eeprom, "0x%.4x\n", u16);
|
RT2X00DEBUGFS_OPS(bbp, "0x%.2x\n", u8);
|
RT2X00DEBUGFS_OPS(rf, "0x%.8x\n", u32);
|
RT2X00DEBUGFS_OPS(rfcsr, "0x%.2x\n", u8);
|
|
static ssize_t rt2x00debug_read_dev_flags(struct file *file,
|
char __user *buf,
|
size_t length,
|
loff_t *offset)
|
{
|
struct rt2x00debug_intf *intf = file->private_data;
|
char line[16];
|
size_t size;
|
|
if (*offset)
|
return 0;
|
|
size = sprintf(line, "0x%.8x\n", (unsigned int)intf->rt2x00dev->flags);
|
|
return simple_read_from_buffer(buf, length, offset, line, size);
|
}
|
|
static const struct file_operations rt2x00debug_fop_dev_flags = {
|
.owner = THIS_MODULE,
|
.read = rt2x00debug_read_dev_flags,
|
.open = rt2x00debug_file_open,
|
.release = rt2x00debug_file_release,
|
.llseek = default_llseek,
|
};
|
|
static ssize_t rt2x00debug_read_cap_flags(struct file *file,
|
char __user *buf,
|
size_t length,
|
loff_t *offset)
|
{
|
struct rt2x00debug_intf *intf = file->private_data;
|
char line[16];
|
size_t size;
|
|
if (*offset)
|
return 0;
|
|
size = sprintf(line, "0x%.8x\n", (unsigned int)intf->rt2x00dev->cap_flags);
|
|
return simple_read_from_buffer(buf, length, offset, line, size);
|
}
|
|
static const struct file_operations rt2x00debug_fop_cap_flags = {
|
.owner = THIS_MODULE,
|
.read = rt2x00debug_read_cap_flags,
|
.open = rt2x00debug_file_open,
|
.release = rt2x00debug_file_release,
|
.llseek = default_llseek,
|
};
|
|
static ssize_t rt2x00debug_write_restart_hw(struct file *file,
|
const char __user *buf,
|
size_t length,
|
loff_t *offset)
|
{
|
struct rt2x00debug_intf *intf = file->private_data;
|
struct rt2x00_dev *rt2x00dev = intf->rt2x00dev;
|
static unsigned long last_reset = INITIAL_JIFFIES;
|
|
if (!rt2x00_has_cap_restart_hw(rt2x00dev))
|
return -EOPNOTSUPP;
|
|
if (time_before(jiffies, last_reset + msecs_to_jiffies(2000)))
|
return -EBUSY;
|
|
last_reset = jiffies;
|
|
ieee80211_restart_hw(rt2x00dev->hw);
|
return length;
|
}
|
|
static const struct file_operations rt2x00debug_restart_hw = {
|
.owner = THIS_MODULE,
|
.write = rt2x00debug_write_restart_hw,
|
.open = simple_open,
|
.llseek = generic_file_llseek,
|
};
|
|
static void rt2x00debug_create_file_driver(const char *name,
|
struct rt2x00debug_intf *intf,
|
struct debugfs_blob_wrapper *blob)
|
{
|
char *data;
|
|
data = kzalloc(3 * MAX_LINE_LENGTH, GFP_KERNEL);
|
if (!data)
|
return;
|
|
blob->data = data;
|
data += sprintf(data, "driver:\t%s\n", intf->rt2x00dev->ops->name);
|
data += sprintf(data, "version:\t%s\n", DRV_VERSION);
|
blob->size = strlen(blob->data);
|
|
debugfs_create_blob(name, 0400, intf->driver_folder, blob);
|
}
|
|
static void rt2x00debug_create_file_chipset(const char *name,
|
struct rt2x00debug_intf *intf,
|
struct debugfs_blob_wrapper *blob)
|
{
|
const struct rt2x00debug *debug = intf->debug;
|
char *data;
|
|
data = kzalloc(9 * MAX_LINE_LENGTH, GFP_KERNEL);
|
if (!data)
|
return;
|
|
blob->data = data;
|
data += sprintf(data, "rt chip:\t%04x\n", intf->rt2x00dev->chip.rt);
|
data += sprintf(data, "rf chip:\t%04x\n", intf->rt2x00dev->chip.rf);
|
data += sprintf(data, "revision:\t%04x\n", intf->rt2x00dev->chip.rev);
|
data += sprintf(data, "\n");
|
data += sprintf(data, "register\tbase\twords\twordsize\n");
|
#define RT2X00DEBUGFS_SPRINTF_REGISTER(__name) \
|
{ \
|
if (debug->__name.read) \
|
data += sprintf(data, __stringify(__name) \
|
"\t%d\t%d\t%d\n", \
|
debug->__name.word_base, \
|
debug->__name.word_count, \
|
debug->__name.word_size); \
|
}
|
RT2X00DEBUGFS_SPRINTF_REGISTER(csr);
|
RT2X00DEBUGFS_SPRINTF_REGISTER(eeprom);
|
RT2X00DEBUGFS_SPRINTF_REGISTER(bbp);
|
RT2X00DEBUGFS_SPRINTF_REGISTER(rf);
|
RT2X00DEBUGFS_SPRINTF_REGISTER(rfcsr);
|
#undef RT2X00DEBUGFS_SPRINTF_REGISTER
|
|
blob->size = strlen(blob->data);
|
|
debugfs_create_blob(name, 0400, intf->driver_folder, blob);
|
}
|
|
void rt2x00debug_register(struct rt2x00_dev *rt2x00dev)
|
{
|
const struct rt2x00debug *debug = rt2x00dev->ops->debugfs;
|
struct rt2x00debug_intf *intf;
|
struct dentry *queue_folder;
|
struct dentry *register_folder;
|
|
intf = kzalloc(sizeof(struct rt2x00debug_intf), GFP_KERNEL);
|
if (!intf) {
|
rt2x00_err(rt2x00dev, "Failed to allocate debug handler\n");
|
return;
|
}
|
|
intf->debug = debug;
|
intf->rt2x00dev = rt2x00dev;
|
rt2x00dev->debugfs_intf = intf;
|
|
intf->driver_folder =
|
debugfs_create_dir(intf->rt2x00dev->ops->name,
|
rt2x00dev->hw->wiphy->debugfsdir);
|
|
rt2x00debug_create_file_driver("driver", intf, &intf->driver_blob);
|
rt2x00debug_create_file_chipset("chipset", intf, &intf->chipset_blob);
|
debugfs_create_file("dev_flags", 0400, intf->driver_folder, intf,
|
&rt2x00debug_fop_dev_flags);
|
debugfs_create_file("cap_flags", 0400, intf->driver_folder, intf,
|
&rt2x00debug_fop_cap_flags);
|
debugfs_create_file("restart_hw", 0200, intf->driver_folder, intf,
|
&rt2x00debug_restart_hw);
|
|
register_folder = debugfs_create_dir("register", intf->driver_folder);
|
|
#define RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(__intf, __name) \
|
({ \
|
if (debug->__name.read) { \
|
debugfs_create_u32(__stringify(__name) "_offset", 0600, \
|
register_folder, \
|
&(__intf)->offset_##__name); \
|
\
|
debugfs_create_file(__stringify(__name) "_value", 0600, \
|
register_folder, (__intf), \
|
&rt2x00debug_fop_##__name); \
|
} \
|
})
|
|
RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, csr);
|
RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, eeprom);
|
RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, bbp);
|
RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rf);
|
RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rfcsr);
|
|
#undef RT2X00DEBUGFS_CREATE_REGISTER_ENTRY
|
|
queue_folder = debugfs_create_dir("queue", intf->driver_folder);
|
|
debugfs_create_file("dump", 0400, queue_folder, intf,
|
&rt2x00debug_fop_queue_dump);
|
|
skb_queue_head_init(&intf->frame_dump_skbqueue);
|
init_waitqueue_head(&intf->frame_dump_waitqueue);
|
|
debugfs_create_file("queue", 0400, queue_folder, intf,
|
&rt2x00debug_fop_queue_stats);
|
|
#ifdef CONFIG_RT2X00_LIB_CRYPTO
|
if (rt2x00_has_cap_hw_crypto(rt2x00dev))
|
debugfs_create_file("crypto", 0444, queue_folder, intf,
|
&rt2x00debug_fop_crypto_stats);
|
#endif
|
|
return;
|
}
|
|
void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev)
|
{
|
struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
|
|
if (unlikely(!intf))
|
return;
|
|
skb_queue_purge(&intf->frame_dump_skbqueue);
|
|
debugfs_remove_recursive(intf->driver_folder);
|
kfree(intf->chipset_blob.data);
|
kfree(intf->driver_blob.data);
|
kfree(intf);
|
|
rt2x00dev->debugfs_intf = NULL;
|
}
|
