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rt2x00: Add rt2x00dev->flags to debugfs

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Loosely based on the patch by Matthijs Kooijman,
this will add the dev_flags entry into debugfs which
will display rt2x00dev->flags.
This will allow easier debugging of flag handling.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ivo van Doorn 2007-09-25 20:13:51 +02:00 • committed by David S. Miller
parent 066cb637b1
commit 643b252123
1 changed files with 37 additions and 0 deletions
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37
drivers/net/wireless/rt2x00/rt2x00debug.c
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@ -57,6 +57,7 @@ struct rt2x00debug_intf {
* - driver folder * - driver folder
* - driver file * - driver file
* - chipset file * - chipset file
* - device flags file
* - register offset/value files * - register offset/value files
* - eeprom offset/value files * - eeprom offset/value files
* - bbp offset/value files * - bbp offset/value files
@ -65,6 +66,7 @@ struct rt2x00debug_intf {
struct dentry *driver_folder; struct dentry *driver_folder;
struct dentry *driver_entry; struct dentry *driver_entry;
struct dentry *chipset_entry; struct dentry *chipset_entry;
struct dentry *dev_flags;
struct dentry *csr_off_entry; struct dentry *csr_off_entry;
struct dentry *csr_val_entry; struct dentry *csr_val_entry;
struct dentry *eeprom_off_entry; struct dentry *eeprom_off_entry;
@ -193,6 +195,34 @@ RT2X00DEBUGFS_OPS(eeprom, "0x%.4x\n", u16);
RT2X00DEBUGFS_OPS(bbp, "0x%.2x\n", u8); RT2X00DEBUGFS_OPS(bbp, "0x%.2x\n", u8);
RT2X00DEBUGFS_OPS(rf, "0x%.8x\n", u32); RT2X00DEBUGFS_OPS(rf, "0x%.8x\n", u32);
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);
if (copy_to_user(buf, line, size))
return -EFAULT;
*offset += size;
return 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,
};
static struct dentry *rt2x00debug_create_file_driver(const char *name, static struct dentry *rt2x00debug_create_file_driver(const char *name,
struct rt2x00debug_intf struct rt2x00debug_intf
*intf, *intf,
@ -270,6 +300,12 @@ void rt2x00debug_register(struct rt2x00_dev *rt2x00dev)
if (IS_ERR(intf->chipset_entry)) if (IS_ERR(intf->chipset_entry))
goto exit; goto exit;
intf->dev_flags = debugfs_create_file("dev_flags", S_IRUGO,
intf->driver_folder, intf,
&rt2x00debug_fop_dev_flags);
if (IS_ERR(intf->dev_flags))
goto exit;
#define RT2X00DEBUGFS_CREATE_ENTRY(__intf, __name) \ #define RT2X00DEBUGFS_CREATE_ENTRY(__intf, __name) \
({ \ ({ \
(__intf)->__name##_off_entry = \ (__intf)->__name##_off_entry = \
@ -320,6 +356,7 @@ void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev)
debugfs_remove(intf->eeprom_off_entry); debugfs_remove(intf->eeprom_off_entry);
debugfs_remove(intf->csr_val_entry); debugfs_remove(intf->csr_val_entry);
debugfs_remove(intf->csr_off_entry); debugfs_remove(intf->csr_off_entry);
debugfs_remove(intf->dev_flags);
debugfs_remove(intf->chipset_entry); debugfs_remove(intf->chipset_entry);
debugfs_remove(intf->driver_entry); debugfs_remove(intf->driver_entry);
debugfs_remove(intf->driver_folder); debugfs_remove(intf->driver_folder);