diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/htc_drv_debug.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/htc_drv_debug.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_debug.c b/drivers/net/wireless/ath/ath9k/htc_drv_debug.c index b3ed65e5c4da..c549ff3abcdc 100644 --- a/drivers/net/wireless/ath/ath9k/htc_drv_debug.c +++ b/drivers/net/wireless/ath/ath9k/htc_drv_debug.c @@ -375,16 +375,11 @@ static ssize_t write_file_debug(struct file *file, const char __user *user_buf, struct ath9k_htc_priv *priv = file->private_data; struct ath_common *common = ath9k_hw_common(priv->ah); unsigned long mask; - char buf[32]; - ssize_t len; - - len = min(count, sizeof(buf) - 1); - if (copy_from_user(buf, user_buf, len)) - return -EFAULT; + ssize_t ret; - buf[len] = '\0'; - if (kstrtoul(buf, 0, &mask)) - return -EINVAL; + ret = kstrtoul_from_user(user_buf, count, 0, &mask); + if (ret) + return ret; common->debug_mask = mask; return count; @@ -491,7 +486,7 @@ int ath9k_htc_init_debug(struct ath_hw *ah) priv->debug.debugfs_phy = debugfs_create_dir(KBUILD_MODNAME, priv->hw->wiphy->debugfsdir); - if (!priv->debug.debugfs_phy) + if (IS_ERR(priv->debug.debugfs_phy)) return -ENOMEM; ath9k_cmn_spectral_init_debug(&priv->spec_priv, priv->debug.debugfs_phy); |