iwlwifi: mvm: fail temp test enabling if the ucode is not loaded

If the ucode is not loaded, don't allow the temperature test to be
started, but allow it to be changed or stopped if already running.

Signed-off-by: Luciano Coelho <[email protected]>
Reviewed-by: Johannes Berg <[email protected]>
Signed-off-by: Emmanuel Grumbach <[email protected]>

diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
index d98ee109c5e93c6e6be08c51bed17548e810a013..85eb847c749d39e92b490bd392e6983be14f0f19 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/debugfs.c
+++ b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
@@ -288,6 +288,9 @@ static ssize_t iwl_dbgfs_set_nic_temperature_write(struct iwl_mvm *mvm,
 {
        int temperature;
 
+       if (!mvm->ucode_loaded && !mvm->temperature_test)
+               return -EIO;
+
        if (kstrtoint(buf, 10, &temperature))
                return -EINVAL;
        /* not a legal temperature */