diff options
Diffstat (limited to 'net/mac80211/debugfs.c')
| -rw-r--r-- | net/mac80211/debugfs.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c index 267ed45ef6a..569609b94c8 100644 --- a/net/mac80211/debugfs.c +++ b/net/mac80211/debugfs.c @@ -297,6 +297,9 @@ static ssize_t hwflags_read(struct file *file, char __user *user_buf, char *buf = kzalloc(mxln, GFP_KERNEL); int sf = 0; /* how many written so far */ + if (!buf) + return 0; + sf += snprintf(buf, mxln - sf, "0x%x\n", local->hw.flags); if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) sf += snprintf(buf + sf, mxln - sf, "HAS_RATE_CONTROL\n"); |