Commit 62bd76a7 authored by Dan Carpenter's avatar Dan Carpenter Committed by Luis Henriques

ath9k_htc: memory corruption calling set_bit()

commit 191f1aee upstream.

In d8a2c51c ('ath9k_htc: Use atomic operations for op_flags') we
changed things like this:

-	if (priv->op_flags & OP_TSF_RESET) {
+	if (test_bit(OP_TSF_RESET, &priv->op_flags)) {

The problem is that test_bit() takes a bit number and not a mask.  It
means that when we do:

	set_bit(OP_TSF_RESET, &priv->op_flags);

Then it sets the (1 << 6) bit instead of the 6 bit so we are setting a
bit which is past the end of the unsigned long.

Fixes: d8a2c51c ('ath9k_htc: Use atomic operations for op_flags')
Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
Signed-off-by: default avatarLuis Henriques <luis.henriques@canonical.com>
parent 031bd08d
...@@ -437,9 +437,9 @@ static inline void ath9k_htc_stop_btcoex(struct ath9k_htc_priv *priv) ...@@ -437,9 +437,9 @@ static inline void ath9k_htc_stop_btcoex(struct ath9k_htc_priv *priv)
} }
#endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */ #endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */
#define OP_BT_PRIORITY_DETECTED BIT(3) #define OP_BT_PRIORITY_DETECTED 3
#define OP_BT_SCAN BIT(4) #define OP_BT_SCAN 4
#define OP_TSF_RESET BIT(6) #define OP_TSF_RESET 6
struct ath9k_htc_priv { struct ath9k_htc_priv {
struct device *dev; struct device *dev;
......
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