diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/tx99.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/tx99.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/drivers/net/wireless/ath/ath9k/tx99.c b/drivers/net/wireless/ath/ath9k/tx99.c index 8a996ed9a3be..f2144fd39093 100644 --- a/drivers/net/wireless/ath/ath9k/tx99.c +++ b/drivers/net/wireless/ath/ath9k/tx99.c @@ -172,9 +172,8 @@ static ssize_t write_file_tx99(struct file *file, const char __user *user_buf, { struct ath_softc *sc = file->private_data; struct ath_common *common = ath9k_hw_common(sc->sc_ah); - char buf[32]; bool start; - ssize_t len; + ssize_t ret; int r; if (count < 1) @@ -183,14 +182,9 @@ static ssize_t write_file_tx99(struct file *file, const char __user *user_buf, if (sc->cur_chan->nvifs > 1) return -EOPNOTSUPP; - len = min(count, sizeof(buf) - 1); - if (copy_from_user(buf, user_buf, len)) - return -EFAULT; - - buf[len] = '\0'; - - if (kstrtobool(buf, &start)) - return -EINVAL; + ret = kstrtobool_from_user(user_buf, count, &start); + if (ret) + return ret; mutex_lock(&sc->mutex); |