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Commit 4c82bf8e authored by Pavel Roskin's avatar Pavel Roskin Committed by John W. Linville
Browse files

mac80211: reduce stack usage in sta_ht_capa_read() 



The maximal size of the "ht_capa" file is 430 bytes.  In most cases,
it's much shorter.  Use a 512 byte long buffer.  1024 bytes is too much
and causes a warning with CONFIG_FRAME_WARN=1024.

Signed-off-by: default avatarPavel Roskin <proski@gnu.org>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 9501fefe

net/mac80211/debugfs_sta.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -165,7 +165,7 @@ static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf, 
	if (_cond) \

	if (_cond) \

			p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \

			p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \

	} while (0)

	} while (0)

	char buf[1024], *p = buf;

	char buf[512], *p = buf;

	int i;

	int i;

	struct sta_info *sta = file->private_data;

	struct sta_info *sta = file->private_data;

	struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;

	struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;