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path: root/drivers/net/wireless/ath/ath9k/tx99.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/tx99.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/tx99.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/tx99.c b/drivers/net/wireless/ath/ath9k/tx99.c
index 49ed1afb913c..fe3a8263b224 100644
--- a/drivers/net/wireless/ath/ath9k/tx99.c
+++ b/drivers/net/wireless/ath/ath9k/tx99.c
@@ -179,6 +179,9 @@ static ssize_t write_file_tx99(struct file *file, const char __user *user_buf,
ssize_t len;
int r;
+ if (count < 1)
+ return -EINVAL;
+
if (sc->cur_chan->nvifs > 1)
return -EOPNOTSUPP;
@@ -186,6 +189,8 @@ static ssize_t write_file_tx99(struct file *file, const char __user *user_buf,
if (copy_from_user(buf, user_buf, len))
return -EFAULT;
+ buf[len] = '\0';
+
if (strtobool(buf, &start))
return -EINVAL;