diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/dfs_debug.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/dfs_debug.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/drivers/net/wireless/ath/ath9k/dfs_debug.c b/drivers/net/wireless/ath/ath9k/dfs_debug.c index 2a79c2fa8415..8e18e9b4ef48 100644 --- a/drivers/net/wireless/ath/ath9k/dfs_debug.c +++ b/drivers/net/wireless/ath/ath9k/dfs_debug.c @@ -99,17 +99,11 @@ static ssize_t write_file_dfs(struct file *file, const char __user *user_buf, { struct ath_softc *sc = file->private_data; unsigned long val; - char buf[32]; - ssize_t len; - - len = min(count, sizeof(buf) - 1); - if (copy_from_user(buf, user_buf, len)) - return -EFAULT; - - buf[len] = '\0'; - if (kstrtoul(buf, 0, &val)) - return -EINVAL; + ssize_t ret; + ret = kstrtoul_from_user(user_buf, count, 0, &val); + if (ret) + return ret; if (val == DFS_STATS_RESET_MAGIC) memset(&sc->debug.stats.dfs_stats, 0, sizeof(sc->debug.stats.dfs_stats)); |