From: Luca Coelho <luciano.coelho@intel.com>
Date: Mon, 18 Sep 2017 11:39:26 +0000 (+0300)
Subject: iwlwifi: mvm: return -ENODATA when reading the temperature with the FW down
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=1442a9a9f2e441b15393c2d89286303b103a57e8;p=openwrt%2Fstaging%2Fblogic.git

iwlwifi: mvm: return -ENODATA when reading the temperature with the FW down

It seems that libsensors treats -EIO as a special non-recoverable
failure when it tries to read the temperature while the firmware is
not running.  To solve that, change the error code to a milder
-ENODATA.

This fixes https://bugzilla.kernel.org/show_bug.cgi?id=196941

Fixes: c221daf219b1 ("iwlwifi: mvm: add registration to thermal zone")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
---

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tt.c b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c
index 4d907f60bce9..1232f63278eb 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/tt.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c
@@ -631,7 +631,7 @@ static int iwl_mvm_tzone_get_temp(struct thermal_zone_device *device,
 
 	if (!iwl_mvm_firmware_running(mvm) ||
 	    mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR) {
-		ret = -EIO;
+		ret = -ENODATA;
 		goto out;
 	}