b43legacy: fix possible buffer overrun in debugfs
Fix possible buffer overrun.
The patch to b43 by Michael Buesch <mb@bu3sch.de> has been ported to
b43legacy.
Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/b43legacy/debugfs.c b/drivers/net/wireless/b43legacy/debugfs.c
index eefa6fb79..619b453 100644
--- a/drivers/net/wireless/b43legacy/debugfs.c
+++ b/drivers/net/wireless/b43legacy/debugfs.c
@@ -124,7 +124,7 @@
__le16 *le16buf = (__le16 *)buf;
for (i = 0; i < 0x1000; i++) {
- if (bufsize <= 0)
+ if (bufsize < sizeof(tmp))
break;
tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 2 * i);
le16buf[i] = cpu_to_le16(tmp);