1 files changed, 9 insertions, 2 deletions

diff --git a/drivers/net/wireless/ath5k/debug.c b/drivers/net/wireless/ath5k/debug.c
index d281b6e38629..129b72684daf 100644
--- a/drivers/net/wireless/ath5k/debug.c
+++ b/drivers/net/wireless/ath5k/debug.c
@@ -210,15 +210,22 @@ static ssize_t write_file_tsf(struct file *file,
                                  size_t count, loff_t *ppos)
 {
         struct ath5k_softc *sc = file->private_data;
-        char buf[20];
+        char buf[21];
+        unsigned long long tsf;
 
-        if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
+        if (copy_from_user(buf, userbuf, min(count, sizeof(buf) - 1)))
                 return -EFAULT;
+        buf[sizeof(buf) - 1] = '\0';
 
         if (strncmp(buf, "reset", 5) == 0) {
                 ath5k_hw_reset_tsf(sc->ah);
                 printk(KERN_INFO "debugfs reset TSF\n");
+        } else {
+                tsf = simple_strtoul(buf, NULL, 0);
+                ath5k_hw_set_tsf64(sc->ah, tsf);
+                printk(KERN_INFO "debugfs set TSF to %#018llx\n", tsf);
         }
+
         return count;
 }