linux-kernel - [PATCH 3.10 168/173] iwlwifi: dont WARN on host commands sent when firmware is dead

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Message-Id: <20131202191202.324559132@linuxfoundation.org>
Date:	Mon,  2 Dec 2013 11:12:31 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
	Johannes Berg <johannes.berg@...el.com>
Subject: [PATCH 3.10 168/173] iwlwifi: dont WARN on host commands sent when firmware is dead

3.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Emmanuel Grumbach <emmanuel.grumbach@...el.com>

commit 8ca95995e64f5d270889badb3e449dca91106a2b upstream.

This triggers automatic bug reports and add no valuable
information. Print a simple error instead and drop the
host command.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@...el.com>
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/net/wireless/iwlwifi/iwl-trans.h |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/net/wireless/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.h
@@ -605,8 +605,10 @@ static inline int iwl_trans_send_cmd(str
 {
 	int ret;
 
-	WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE,
-		  "%s bad state = %d", __func__, trans->state);
+	if (trans->state != IWL_TRANS_FW_ALIVE) {
+		IWL_ERR(trans, "%s bad state = %d", __func__, trans->state);
+		return -EIO;
+	}
 
 	if (!(cmd->flags & CMD_ASYNC))
 		lock_map_acquire_read(&trans->sync_cmd_lockdep_map);


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