iwlwifi: mvm: don't NUL-terminate low-latency debugfs file

There's obviously no reason to write a NUL-terminating byte into
the debugfs file. Apparently nobody tried to use this from a tool
that doesn't strip NUL bytes though, so we never noticed. Fix it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>

diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c b/drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c
index 383a3162046c143129308f906269dbeba95bac16..334ae56e5d8b24fdb07857c86dd0bd70e13d4017 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c
+++ b/drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c
@@ -1250,11 +1250,10 @@ static ssize_t iwl_dbgfs_low_latency_read(struct file *file,
 {
        struct ieee80211_vif *vif = file->private_data;
        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-       char buf[3];
+       char buf[2];
 
        buf[0] = mvmvif->low_latency ? '1' : '0';
        buf[1] = '\n';
-       buf[2] = '\0';
        return simple_read_from_buffer(user_buf, count, ppos, buf, sizeof(buf));
 }