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From 470e08b2e73b3ce64336de8d55b009e4782735b8 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Wed, 20 Jun 2012 08:46:25 +0200
Subject: [PATCH 29/46] iwlwifi: remove log_event debugfs file debugging is
disabled
commit 882b7b7d11d65e8eccce738f1ce97cdfdb998f9f upstream.
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.
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>
[bwh: Backported to 3.2: adjust filename, context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/net/wireless/iwlwifi/iwl-trans-pcie.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c b/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
index 5815cf5..4661a64 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
+++ b/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
@@ -1777,6 +1777,7 @@ static ssize_t iwl_dbgfs_rx_queue_read(struct file *file,
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
+#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)
@@ -1814,6 +1815,7 @@ static ssize_t iwl_dbgfs_log_event_write(struct file *file,
return count;
}
+#endif
static ssize_t iwl_dbgfs_interrupt_read(struct file *file,
char __user *user_buf,
@@ -1941,7 +1943,9 @@ static ssize_t iwl_dbgfs_fh_reg_read(struct file *file,
return ret;
}
+#ifdef CONFIG_IWLWIFI_DEBUG
DEBUGFS_READ_WRITE_FILE_OPS(log_event);
+#endif
DEBUGFS_READ_WRITE_FILE_OPS(interrupt);
DEBUGFS_READ_FILE_OPS(fh_reg);
DEBUGFS_READ_FILE_OPS(rx_queue);
@@ -1957,7 +1961,9 @@ static int iwl_trans_pcie_dbgfs_register(struct iwl_trans *trans,
{
DEBUGFS_ADD_FILE(rx_queue, dir, S_IRUSR);
DEBUGFS_ADD_FILE(tx_queue, dir, S_IRUSR);
+#ifdef CONFIG_IWLWIFI_DEBUG
DEBUGFS_ADD_FILE(log_event, dir, S_IWUSR | S_IRUSR);
+#endif
DEBUGFS_ADD_FILE(interrupt, dir, S_IWUSR | S_IRUSR);
DEBUGFS_ADD_FILE(csr, dir, S_IWUSR);
DEBUGFS_ADD_FILE(fh_reg, dir, S_IRUSR);
--
1.7.10
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