From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Date: Tue, 11 Jun 2013 12:17:21 +0000 (+0300)
Subject: iwlwifi: ignore 0-length PHY DB sections
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=476a9e09cbe37bad93de6e460b76f89f3ad22c9b;p=openwrt%2Fstaging%2Fblogic.git

iwlwifi: ignore 0-length PHY DB sections

This can happen during development but can cause problems,
WARN (once) and go on.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Reviewed-by: Guy Cohen <guy.cohen@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---

diff --git a/drivers/net/wireless/iwlwifi/iwl-phy-db.c b/drivers/net/wireless/iwlwifi/iwl-phy-db.c
index 25745daa0d5d..84acb4deca8a 100644
--- a/drivers/net/wireless/iwlwifi/iwl-phy-db.c
+++ b/drivers/net/wireless/iwlwifi/iwl-phy-db.c
@@ -413,6 +413,9 @@ static int iwl_phy_db_send_all_channel_groups(
 		if (!entry)
 			return -EINVAL;
 
+		if (WARN_ON_ONCE(!entry->size))
+			continue;
+
 		/* Send the requested PHY DB section */
 		err = iwl_send_phy_db_cmd(phy_db,
 					  type,