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Bluetooth: Expose inquiry_cache debugfs only on BR/EDR controllers 

The inquiry_cache debugfs entry is only valid for BR/EDR capable
controllers. In case of single mode LE-only controllers that
entry is not valid.

Move the creating of the debugfs entries to the end of controller
init and only create the inquiry_cache entry if BR/EDR is actually
supported.

At the same time this avoids creating any debugfs entries for
AMP controllers since none of the entries are valid there.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2013-10-16 03:28:55 -07:00 committed by Johan Hedberg
parent 7f59ddada1
commit baf27f6e0e
2 changed files with 55 additions and 41 deletions
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57
net/bluetooth/hci_core.c
View File

@ -27,8 +27,8 @@
#include <linux/export.h>
#include <linux/idr.h>
#include <linux/rfkill.h>
#include <linux/debugfs.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
@ -55,6 +55,44 @@ static void hci_notify(struct hci_dev *hdev, int event)
hci_sock_dev_event(hdev, event);
}
/* ---- HCI debugfs entries ---- */
static int inquiry_cache_show(struct seq_file *f, void *p)
{
struct hci_dev *hdev = f->private;
struct discovery_state *cache = &hdev->discovery;
struct inquiry_entry *e;
hci_dev_lock(hdev);
list_for_each_entry(e, &cache->all, all) {
struct inquiry_data *data = &e->data;
seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
&data->bdaddr,
data->pscan_rep_mode, data->pscan_period_mode,
data->pscan_mode, data->dev_class[2],
data->dev_class[1], data->dev_class[0],
__le16_to_cpu(data->clock_offset),
data->rssi, data->ssp_mode, e->timestamp);
}
hci_dev_unlock(hdev);
return 0;
}
static int inquiry_cache_open(struct inode *inode, struct file *file)
{
return single_open(file, inquiry_cache_show, inode->i_private);
}
static const struct file_operations inquiry_cache_fops = {
.open = inquiry_cache_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/* ---- HCI requests ---- */
static void hci_req_sync_complete(struct hci_dev *hdev, u8 result)
@ -734,7 +772,22 @@ static int __hci_init(struct hci_dev *hdev)
if (err < 0)
return err;
return __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT);
err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT);
if (err < 0)
return err;
/* Only create debugfs entries during the initial setup
* phase and not every time the controller gets powered on.
*/
if (!test_bit(HCI_SETUP, &hdev->dev_flags))
return 0;
if (lmp_bredr_capable(hdev)) {
debugfs_create_file("inquiry_cache", 0444, hdev->debugfs,
hdev, &inquiry_cache_fops);
}
return 0;
}
static void hci_scan_req(struct hci_request *req, unsigned long opt)

39
net/bluetooth/hci_sysfs.c
View File

@ -396,42 +396,6 @@ static struct device_type bt_host = {
.release = bt_host_release,
};
static int inquiry_cache_show(struct seq_file *f, void *p)
{
struct hci_dev *hdev = f->private;
struct discovery_state *cache = &hdev->discovery;
struct inquiry_entry *e;
hci_dev_lock(hdev);
list_for_each_entry(e, &cache->all, all) {
struct inquiry_data *data = &e->data;
seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n",
&data->bdaddr,
data->pscan_rep_mode, data->pscan_period_mode,
data->pscan_mode, data->dev_class[2],
data->dev_class[1], data->dev_class[0],
__le16_to_cpu(data->clock_offset),
data->rssi, data->ssp_mode, e->timestamp);
}
hci_dev_unlock(hdev);
return 0;
}
static int inquiry_cache_open(struct inode *inode, struct file *file)
{
return single_open(file, inquiry_cache_show, inode->i_private);
}
static const struct file_operations inquiry_cache_fops = {
.open = inquiry_cache_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int blacklist_show(struct seq_file *f, void *p)
{
struct hci_dev *hdev = f->private;
@ -562,9 +526,6 @@ int hci_add_sysfs(struct hci_dev *hdev)
if (!hdev->debugfs)
return 0;
debugfs_create_file("inquiry_cache", 0444, hdev->debugfs,
hdev, &inquiry_cache_fops);
debugfs_create_file("blacklist", 0444, hdev->debugfs,
hdev, &blacklist_fops);