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iwlwifi: remove log_event debugfs file debugging is disabled 

When debugging is disabled, the event log functions aren't
functional in the way that the debugfs file expects. This
leads to the debugfs access crashing. Since the event log
functions aren't functional then, remove the debugfs file
when CONFIG_IWLWIFI_DEBUG is not set.

Cc: stable@kernel.org
Reported-by: Lekensteyn <lekensteyn@gmail.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2012-06-20 08:46:25 +02:00 committed by John W. Linville
parent f18e3c6b67
commit 882b7b7d11
1 changed files with 6 additions and 0 deletions
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6
drivers/net/wireless/iwlwifi/iwl-debugfs.c
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@ -2239,6 +2239,7 @@ static ssize_t iwl_dbgfs_echo_test_write(struct file *file,
return count;
}
#ifdef CONFIG_IWLWIFI_DEBUG
static ssize_t iwl_dbgfs_log_event_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
@ -2276,6 +2277,7 @@ static ssize_t iwl_dbgfs_log_event_write(struct file *file,
return count;
}
#endif
static ssize_t iwl_dbgfs_calib_disabled_read(struct file *file,
char __user *user_buf,
@ -2345,7 +2347,9 @@ DEBUGFS_READ_FILE_OPS(bt_traffic);
DEBUGFS_READ_WRITE_FILE_OPS(protection_mode);
DEBUGFS_READ_FILE_OPS(reply_tx_error);
DEBUGFS_WRITE_FILE_OPS(echo_test);
#ifdef CONFIG_IWLWIFI_DEBUG
DEBUGFS_READ_WRITE_FILE_OPS(log_event);
#endif
DEBUGFS_READ_WRITE_FILE_OPS(calib_disabled);
/*
@ -2405,7 +2409,9 @@ int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
DEBUGFS_ADD_FILE(rxon_flags, dir_debug, S_IWUSR);
DEBUGFS_ADD_FILE(rxon_filter_flags, dir_debug, S_IWUSR);
DEBUGFS_ADD_FILE(echo_test, dir_debug, S_IWUSR);
#ifdef CONFIG_IWLWIFI_DEBUG
DEBUGFS_ADD_FILE(log_event, dir_debug, S_IWUSR | S_IRUSR);
#endif
if (iwl_advanced_bt_coexist(priv))
DEBUGFS_ADD_FILE(bt_traffic, dir_debug, S_IRUSR);