pull request: wireless 2012-02-20

pull request: wireless 2012-02-20

[John W. Linville]

[-- Attachment #1: Type: text/plain, Size: 21345 bytes --]

commit 9d4990a260ce395493848640bed94fb55f440f10

Dave,

Here is another batch of fixes intended for 3.3.  Most of the fixes
this time are for Bluetooth.

Quoth Johan Hedberg <johan.hedberg@gmail.com>:

"Here's one (hopefully) last set of important Bluetooth fixes intended
for 3.3:

- One important SSP fix which fixes security level upgrade handling
  (this was breaking connections with many devices).
- An update to btusb fixing invalid flag usage with usb_submit_urb() as
  well as one new vendor ID for a Broadcom device.
- One compilation warning fix for a bogus inline declaration
- Fix proper timeout value for l2cap_set_timer and sk_sndtimeo and
  hci_conn_put
- Fix a lockdep warning with Bluetooth sockets
- Deadlock fix in hci_conn_hold
- RFCOMM reference counting fix
- QUIRK_NO_RESET fix which was breaking suspend with some laptops
- Two fixes related to synchronization with cancel_delayed_work()"

Along with the Bluetooth fixes, we have a handful of wireless LAN
fixes.  First is an mwifiex fix from Amitkumar Karwar that does
proper initializations to ensure that associations can occur in
all conditions.  Next is a mac80211 fix from Felix Fietkau to add a
check to rate_control_tx_status that avoids a crash in minstrel_ht.
This pairs with a mac80211 fix from Johannes Berg to ensure that
mac80211 rate control is initialized properly before being called.
Finally, we have an ath9k fix from Pavel Roskin to ensure that ath9k's
rate control processes rate control information in Tx status reports
properly.

Please let me know if there are problems!

Thanks,

John

---

The following changes since commit 64f0a836f600e9c31ffd511713ab5d328aa96ac8:

  b44: remove __exit from b44_pci_exit() (2012-02-19 18:57:51 -0500)

are available in the git repository at:
  git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless.git for-davem

Amitkumar Karwar (1):
      mwifiex: clear previous security setting during association

Andre Guedes (1):
      Bluetooth: Fix potential deadlock

Andrzej Kaczmarek (2):
      Bluetooth: Fix sk_sndtimeo initialization for L2CAP socket
      Bluetooth: l2cap_set_timer needs jiffies as timeout value

Daniel Wagner (1):
      Bluetooth: Don't mark non xfer isoc endpoint URBs with URB_ISO_ASAP

Felix Fietkau (1):
      mac80211: do not call rate control .tx_status before .rate_init

Johan Hedberg (2):
      Bluetooth: Remove bogus inline declaration from l2cap_chan_connect
      Bluetooth: Add missing QUIRK_NO_RESET test to hci_dev_do_close

Johannes Berg (1):
      mac80211: call rate control only after init

John W. Linville (1):
      Merge branch 'master' of git://git.kernel.org/.../linville/wireless into for-davem

Manoj Iyer (1):
      Bluetooth: btusb: Add vendor specific ID (0a5c 21f3) for BCM20702A0

Octavian Purdila (2):
      Bluetooth: silence lockdep warning
      Bluetooth: Fix RFCOMM session reference counting issue

Pavel Roskin (1):
      ath9k: stop on rates with idx -1 in ath9k rate control's .tx_status

Peter Hurley (1):
      Bluetooth: Fix l2cap conn failures for ssp devices

Ulisses Furquim (2):
      Bluetooth: Remove usage of __cancel_delayed_work()
      Bluetooth: Fix possible use after free in delete path

Vinicius Costa Gomes (1):
      Bluetooth: Fix using an absolute timeout on hci_conn_put()

 drivers/bluetooth/btusb.c               |    4 +---
 drivers/net/wireless/ath/ath9k/rc.c     |    2 +-
 drivers/net/wireless/mwifiex/cfg80211.c |    8 +++++++-
 include/net/bluetooth/bluetooth.h       |    2 ++
 include/net/bluetooth/hci_core.h        |    6 +++---
 include/net/bluetooth/l2cap.h           |   12 ++++++------
 net/bluetooth/af_bluetooth.c            |   12 +++++-------
 net/bluetooth/hci_conn.c                |    4 ++++
 net/bluetooth/hci_core.c                |    3 ++-
 net/bluetooth/l2cap_core.c              |   24 ++++++++++++++----------
 net/bluetooth/l2cap_sock.c              |    4 +++-
 net/bluetooth/rfcomm/core.c             |   18 ++++++++++++------
 net/bluetooth/rfcomm/sock.c             |    2 ++
 net/mac80211/debugfs_sta.c              |    4 ++--
 net/mac80211/rate.c                     |    2 +-
 net/mac80211/rate.h                     |    3 ++-
 net/mac80211/sta_info.h                 |    2 ++
 17 files changed, 69 insertions(+), 43 deletions(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index f00f596..789c9b5 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -102,6 +102,7 @@ static struct usb_device_id btusb_table[] = {
 
 	/* Broadcom BCM20702A0 */
 	{ USB_DEVICE(0x0a5c, 0x21e3) },
+	{ USB_DEVICE(0x0a5c, 0x21f3) },
 	{ USB_DEVICE(0x413c, 0x8197) },
 
 	{ }	/* Terminating entry */
@@ -726,9 +727,6 @@ static int btusb_send_frame(struct sk_buff *skb)
 		usb_fill_bulk_urb(urb, data->udev, pipe,
 				skb->data, skb->len, btusb_tx_complete, skb);
 
-		if (skb->priority >= HCI_PRIO_MAX - 1)
-			urb->transfer_flags  = URB_ISO_ASAP;
-
 		hdev->stat.acl_tx++;
 		break;
 
diff --git a/drivers/net/wireless/ath/ath9k/rc.c b/drivers/net/wireless/ath/ath9k/rc.c
index 635b592..a427a16 100644
--- a/drivers/net/wireless/ath/ath9k/rc.c
+++ b/drivers/net/wireless/ath/ath9k/rc.c
@@ -1346,7 +1346,7 @@ static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband,
 	fc = hdr->frame_control;
 	for (i = 0; i < sc->hw->max_rates; i++) {
 		struct ieee80211_tx_rate *rate = &tx_info->status.rates[i];
-		if (!rate->count)
+		if (rate->idx < 0 || !rate->count)
 			break;
 
 		final_ts_idx = i;
diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c
index c3b6c46..5b2972b 100644
--- a/drivers/net/wireless/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/mwifiex/cfg80211.c
@@ -841,7 +841,12 @@ mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
 		ret = mwifiex_set_rf_channel(priv, channel,
 						priv->adapter->channel_type);
 
-	ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);	/* Disable keys */
+	/* As this is new association, clear locally stored
+	 * keys and security related flags */
+	priv->sec_info.wpa_enabled = false;
+	priv->sec_info.wpa2_enabled = false;
+	priv->wep_key_curr_index = 0;
+	ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);
 
 	if (mode == NL80211_IFTYPE_ADHOC) {
 		/* "privacy" is set only for ad-hoc mode */
@@ -886,6 +891,7 @@ mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
 			dev_dbg(priv->adapter->dev,
 				"info: setting wep encryption"
 				" with key len %d\n", sme->key_len);
+			priv->wep_key_curr_index = sme->key_idx;
 			ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
 							sme->key_idx, 0);
 		}
diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index abaad6e..4a82ca0 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -256,4 +256,6 @@ void l2cap_exit(void);
 int sco_init(void);
 void sco_exit(void);
 
+void bt_sock_reclassify_lock(struct sock *sk, int proto);
+
 #endif /* __BLUETOOTH_H */
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index ea9231f..453893b 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -540,7 +540,7 @@ void hci_conn_put_device(struct hci_conn *conn);
 static inline void hci_conn_hold(struct hci_conn *conn)
 {
 	atomic_inc(&conn->refcnt);
-	cancel_delayed_work_sync(&conn->disc_work);
+	cancel_delayed_work(&conn->disc_work);
 }
 
 static inline void hci_conn_put(struct hci_conn *conn)
@@ -559,9 +559,9 @@ static inline void hci_conn_put(struct hci_conn *conn)
 		} else {
 			timeo = msecs_to_jiffies(10);
 		}
-		cancel_delayed_work_sync(&conn->disc_work);
+		cancel_delayed_work(&conn->disc_work);
 		queue_delayed_work(conn->hdev->workqueue,
-					&conn->disc_work, jiffies + timeo);
+					&conn->disc_work, timeo);
 	}
 }
 
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 68f5891..b1664ed 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -611,7 +611,7 @@ static inline void l2cap_set_timer(struct l2cap_chan *chan,
 {
 	BT_DBG("chan %p state %d timeout %ld", chan, chan->state, timeout);
 
-	if (!__cancel_delayed_work(work))
+	if (!cancel_delayed_work(work))
 		l2cap_chan_hold(chan);
 	schedule_delayed_work(work, timeout);
 }
@@ -619,20 +619,20 @@ static inline void l2cap_set_timer(struct l2cap_chan *chan,
 static inline void l2cap_clear_timer(struct l2cap_chan *chan,
 					struct delayed_work *work)
 {
-	if (__cancel_delayed_work(work))
+	if (cancel_delayed_work(work))
 		l2cap_chan_put(chan);
 }
 
 #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t))
 #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer)
 #define __set_retrans_timer(c) l2cap_set_timer(c, &c->retrans_timer, \
-		L2CAP_DEFAULT_RETRANS_TO);
+		msecs_to_jiffies(L2CAP_DEFAULT_RETRANS_TO));
 #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer)
 #define __set_monitor_timer(c) l2cap_set_timer(c, &c->monitor_timer, \
-		L2CAP_DEFAULT_MONITOR_TO);
+		msecs_to_jiffies(L2CAP_DEFAULT_MONITOR_TO));
 #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer)
 #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \
-		L2CAP_DEFAULT_ACK_TO);
+		msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO));
 #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer)
 
 static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2)
@@ -834,7 +834,7 @@ int l2cap_add_scid(struct l2cap_chan *chan,  __u16 scid);
 struct l2cap_chan *l2cap_chan_create(struct sock *sk);
 void l2cap_chan_close(struct l2cap_chan *chan, int reason);
 void l2cap_chan_destroy(struct l2cap_chan *chan);
-inline int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
+int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
 								bdaddr_t *dst);
 int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len,
 								u32 priority);
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index ef92864..72eb187 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -71,19 +71,16 @@ static const char *const bt_slock_key_strings[BT_MAX_PROTO] = {
 	"slock-AF_BLUETOOTH-BTPROTO_AVDTP",
 };
 
-static inline void bt_sock_reclassify_lock(struct socket *sock, int proto)
+void bt_sock_reclassify_lock(struct sock *sk, int proto)
 {
-	struct sock *sk = sock->sk;
-
-	if (!sk)
-		return;
-
+	BUG_ON(!sk);
 	BUG_ON(sock_owned_by_user(sk));
 
 	sock_lock_init_class_and_name(sk,
 			bt_slock_key_strings[proto], &bt_slock_key[proto],
 				bt_key_strings[proto], &bt_lock_key[proto]);
 }
+EXPORT_SYMBOL(bt_sock_reclassify_lock);
 
 int bt_sock_register(int proto, const struct net_proto_family *ops)
 {
@@ -145,7 +142,8 @@ static int bt_sock_create(struct net *net, struct socket *sock, int proto,
 
 	if (bt_proto[proto] && try_module_get(bt_proto[proto]->owner)) {
 		err = bt_proto[proto]->create(net, sock, proto, kern);
-		bt_sock_reclassify_lock(sock, proto);
+		if (!err)
+			bt_sock_reclassify_lock(sock->sk, proto);
 		module_put(bt_proto[proto]->owner);
 	}
 
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 3db4324..07bc69e 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -635,6 +635,10 @@ static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
 
 	if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->pend)) {
 		struct hci_cp_auth_requested cp;
+
+		/* encrypt must be pending if auth is also pending */
+		set_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend);
+
 		cp.handle = cpu_to_le16(conn->handle);
 		hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED,
 							sizeof(cp), &cp);
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 9de9371..5aeb624 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -640,7 +640,8 @@ static int hci_dev_do_close(struct hci_dev *hdev)
 	/* Reset device */
 	skb_queue_purge(&hdev->cmd_q);
 	atomic_set(&hdev->cmd_cnt, 1);
-	if (!test_bit(HCI_RAW, &hdev->flags)) {
+	if (!test_bit(HCI_RAW, &hdev->flags) &&
+				test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks)) {
 		set_bit(HCI_INIT, &hdev->flags);
 		__hci_request(hdev, hci_reset_req, 0,
 					msecs_to_jiffies(250));
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index faf0b11..32d338c 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -1018,10 +1018,10 @@ static void l2cap_conn_del(struct hci_conn *hcon, int err)
 	hci_chan_del(conn->hchan);
 
 	if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_SENT)
-		__cancel_delayed_work(&conn->info_timer);
+		cancel_delayed_work_sync(&conn->info_timer);
 
 	if (test_and_clear_bit(HCI_CONN_LE_SMP_PEND, &hcon->pend)) {
-		__cancel_delayed_work(&conn->security_timer);
+		cancel_delayed_work_sync(&conn->security_timer);
 		smp_chan_destroy(conn);
 	}
 
@@ -1120,7 +1120,7 @@ static struct l2cap_chan *l2cap_global_chan_by_psm(int state, __le16 psm, bdaddr
 	return c1;
 }
 
-inline int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid, bdaddr_t *dst)
+int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid, bdaddr_t *dst)
 {
 	struct sock *sk = chan->sk;
 	bdaddr_t *src = &bt_sk(sk)->src;
@@ -2574,7 +2574,7 @@ static inline int l2cap_command_rej(struct l2cap_conn *conn, struct l2cap_cmd_hd
 
 	if ((conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_SENT) &&
 					cmd->ident == conn->info_ident) {
-		__cancel_delayed_work(&conn->info_timer);
+		cancel_delayed_work(&conn->info_timer);
 
 		conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_DONE;
 		conn->info_ident = 0;
@@ -2970,7 +2970,8 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr
 
 	default:
 		sk->sk_err = ECONNRESET;
-		__set_chan_timer(chan, L2CAP_DISC_REJ_TIMEOUT);
+		__set_chan_timer(chan,
+				msecs_to_jiffies(L2CAP_DISC_REJ_TIMEOUT));
 		l2cap_send_disconn_req(conn, chan, ECONNRESET);
 		goto done;
 	}
@@ -3120,7 +3121,7 @@ static inline int l2cap_information_rsp(struct l2cap_conn *conn, struct l2cap_cm
 			conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_DONE)
 		return 0;
 
-	__cancel_delayed_work(&conn->info_timer);
+	cancel_delayed_work(&conn->info_timer);
 
 	if (result != L2CAP_IR_SUCCESS) {
 		conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_DONE;
@@ -4478,7 +4479,8 @@ static inline void l2cap_check_encryption(struct l2cap_chan *chan, u8 encrypt)
 	if (encrypt == 0x00) {
 		if (chan->sec_level == BT_SECURITY_MEDIUM) {
 			__clear_chan_timer(chan);
-			__set_chan_timer(chan, L2CAP_ENC_TIMEOUT);
+			__set_chan_timer(chan,
+					msecs_to_jiffies(L2CAP_ENC_TIMEOUT));
 		} else if (chan->sec_level == BT_SECURITY_HIGH)
 			l2cap_chan_close(chan, ECONNREFUSED);
 	} else {
@@ -4499,7 +4501,7 @@ int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
 
 	if (hcon->type == LE_LINK) {
 		smp_distribute_keys(conn, 0);
-		__cancel_delayed_work(&conn->security_timer);
+		cancel_delayed_work(&conn->security_timer);
 	}
 
 	rcu_read_lock();
@@ -4546,7 +4548,8 @@ int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
 					L2CAP_CONN_REQ, sizeof(req), &req);
 			} else {
 				__clear_chan_timer(chan);
-				__set_chan_timer(chan, L2CAP_DISC_TIMEOUT);
+				__set_chan_timer(chan,
+					msecs_to_jiffies(L2CAP_DISC_TIMEOUT));
 			}
 		} else if (chan->state == BT_CONNECT2) {
 			struct l2cap_conn_rsp rsp;
@@ -4566,7 +4569,8 @@ int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
 				}
 			} else {
 				l2cap_state_change(chan, BT_DISCONN);
-				__set_chan_timer(chan, L2CAP_DISC_TIMEOUT);
+				__set_chan_timer(chan,
+					msecs_to_jiffies(L2CAP_DISC_TIMEOUT));
 				res = L2CAP_CR_SEC_BLOCK;
 				stat = L2CAP_CS_NO_INFO;
 			}
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index c61d967..401d942 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -849,6 +849,8 @@ static struct l2cap_chan *l2cap_sock_new_connection_cb(void *data)
 	if (!sk)
 		return NULL;
 
+	bt_sock_reclassify_lock(sk, BTPROTO_L2CAP);
+
 	l2cap_sock_init(sk, parent);
 
 	return l2cap_pi(sk)->chan;
@@ -1002,7 +1004,7 @@ static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int p
 	INIT_LIST_HEAD(&bt_sk(sk)->accept_q);
 
 	sk->sk_destruct = l2cap_sock_destruct;
-	sk->sk_sndtimeo = L2CAP_CONN_TIMEOUT;
+	sk->sk_sndtimeo = msecs_to_jiffies(L2CAP_CONN_TIMEOUT);
 
 	sock_reset_flag(sk, SOCK_ZAPPED);
 
diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index 501649b..8a60238 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -1164,12 +1164,18 @@ static int rfcomm_recv_ua(struct rfcomm_session *s, u8 dlci)
 			break;
 
 		case BT_DISCONN:
-			/* When socket is closed and we are not RFCOMM
-			 * initiator rfcomm_process_rx already calls
-			 * rfcomm_session_put() */
-			if (s->sock->sk->sk_state != BT_CLOSED)
-				if (list_empty(&s->dlcs))
-					rfcomm_session_put(s);
+			/* rfcomm_session_put is called later so don't do
+			 * anything here otherwise we will mess up the session
+			 * reference counter:
+			 *
+			 * (a) when we are the initiator dlc_unlink will drive
+			 * the reference counter to 0 (there is no initial put
+			 * after session_add)
+			 *
+			 * (b) when we are not the initiator rfcomm_rx_process
+			 * will explicitly call put to balance the initial hold
+			 * done after session add.
+			 */
 			break;
 		}
 	}
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index f066678..22169c3 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -956,6 +956,8 @@ int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc *
 	if (!sk)
 		goto done;
 
+	bt_sock_reclassify_lock(sk, BTPROTO_RFCOMM);
+
 	rfcomm_sock_init(sk, parent);
 	bacpy(&bt_sk(sk)->src, &src);
 	bacpy(&bt_sk(sk)->dst, &dst);
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 2406b3e..d86217d 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -63,14 +63,14 @@ static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
 	test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
 
 	int res = scnprintf(buf, sizeof(buf),
-			    "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
+			    "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
 			    TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
 			    TEST(PS_DRIVER), TEST(AUTHORIZED),
 			    TEST(SHORT_PREAMBLE),
 			    TEST(WME), TEST(WDS), TEST(CLEAR_PS_FILT),
 			    TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
 			    TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
-			    TEST(TDLS_PEER_AUTH));
+			    TEST(TDLS_PEER_AUTH), TEST(RATE_CONTROL));
 #undef TEST
 	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 }
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index 5a5a776..ad64f4d 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -336,7 +336,7 @@ void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
 	int i;
 	u32 mask;
 
-	if (sta) {
+	if (sta && test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) {
 		ista = &sta->sta;
 		priv_sta = sta->rate_ctrl_priv;
 	}
diff --git a/net/mac80211/rate.h b/net/mac80211/rate.h
index 168427b..80cfc00 100644
--- a/net/mac80211/rate.h
+++ b/net/mac80211/rate.h
@@ -41,7 +41,7 @@ static inline void rate_control_tx_status(struct ieee80211_local *local,
 	struct ieee80211_sta *ista = &sta->sta;
 	void *priv_sta = sta->rate_ctrl_priv;
 
-	if (!ref)
+	if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
 		return;
 
 	ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
@@ -62,6 +62,7 @@ static inline void rate_control_rate_init(struct sta_info *sta)
 	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
 
 	ref->ops->rate_init(ref->priv, sband, ista, priv_sta);
+	set_sta_flag(sta, WLAN_STA_RATE_CONTROL);
 }
 
 static inline void rate_control_rate_update(struct ieee80211_local *local,
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 6f77f12..bfed851 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -52,6 +52,7 @@
  * @WLAN_STA_SP: Station is in a service period, so don't try to
  *	reply to other uAPSD trigger frames or PS-Poll.
  * @WLAN_STA_4ADDR_EVENT: 4-addr event was already sent for this frame.
+ * @WLAN_STA_RATE_CONTROL: rate control was initialized for this station.
  */
 enum ieee80211_sta_info_flags {
 	WLAN_STA_AUTH,
@@ -71,6 +72,7 @@ enum ieee80211_sta_info_flags {
 	WLAN_STA_UAPSD,
 	WLAN_STA_SP,
 	WLAN_STA_4ADDR_EVENT,
+	WLAN_STA_RATE_CONTROL,
 };
 
 enum ieee80211_sta_state {
-- 
John W. Linville		Someday the world will need a hero, and you
linville@tuxdriver.com			might be all we have.  Be ready.

[-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --]

Re: pull request: wireless 2012-02-20

[David Miller]

From: "John W. Linville" <linville@tuxdriver.com>
Date: Mon, 20 Feb 2012 15:37:40 -0500

> Here is another batch of fixes intended for 3.3.  Most of the fixes
> this time are for Bluetooth.

Pulled, but please read the bluetooth changes more carefully in the
future, there were a lot of coding style errors introduced this
time around.

Re: pull request: wireless 2012-02-20

[John W. Linville]

On Mon, Feb 20, 2012 at 07:23:24PM -0500, David Miller wrote:
> From: "John W. Linville" <linville@tuxdriver.com>
> Date: Mon, 20 Feb 2012 15:37:40 -0500
> 
> > Here is another batch of fixes intended for 3.3.  Most of the fixes
> > this time are for Bluetooth.
> 
> Pulled, but please read the bluetooth changes more carefully in the
> future, there were a lot of coding style errors introduced this
> time around.

I pinged Johan about this, and he tells me that he spoke to Marcel
as well.  They were a bit unsure about the issue.  Is your concern
primarily about some excessive tabbing for indentation of parameters
and such?

John
-- 
John W. Linville		Someday the world will need a hero, and you
linville@tuxdriver.com			might be all we have.  Be ready.

Re: pull request: wireless 2012-02-20

[David Miller]

From: "John W. Linville" <linville@tuxdriver.com>
Date: Tue, 21 Feb 2012 10:14:36 -0500

> On Mon, Feb 20, 2012 at 07:23:24PM -0500, David Miller wrote:
>> From: "John W. Linville" <linville@tuxdriver.com>
>> Date: Mon, 20 Feb 2012 15:37:40 -0500
>> 
>> > Here is another batch of fixes intended for 3.3.  Most of the fixes
>> > this time are for Bluetooth.
>> 
>> Pulled, but please read the bluetooth changes more carefully in the
>> future, there were a lot of coding style errors introduced this
>> time around.
> 
> I pinged Johan about this, and he tells me that he spoke to Marcel
> as well.  They were a bit unsure about the issue.  Is your concern
> primarily about some excessive tabbing for indentation of parameters
> and such?

So you actually looked at the changes you pushed to me and you are
telling me you personally can't find anything that looks like garbage?

Really?  Do I really have to point out such obvious stuff like this?
Are you serious?

Look at ca0d6c7ece0e78268cd7c5c378d6b1b610625085 ("Bluetooth: Add
missing QUIRK_NO_RESET test to hci_dev_do_close")

You tell me what the heck you think of this thing.

-	if (!test_bit(HCI_RAW, &hdev->flags)) {
+	if (!test_bit(HCI_RAW, &hdev->flags) &&
+				test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks)) {

That's disgusting, it jumps off the screen and says "Hello, I am ugly
as sin".  How in the world can you miss something like this?  Four
TABs on the second line?  Why?  I can't believe we even have to discuss
something like this, seriously.

Commit 6e1da683f79a22fafaada62d547138daaa9e3456 ("Bluetooth: l2cap_set_timer
needs jiffies as timeout value"):

-		__set_chan_timer(chan, L2CAP_DISC_REJ_TIMEOUT);
+		__set_chan_timer(chan,
+				msecs_to_jiffies(L2CAP_DISC_REJ_TIMEOUT));

You can't see that mis-tabbed thing on the second new line?  Really?

The list goes on and on, just walk through the bluetooth commits from
the other day, stuff like this is all over the place.

Re: pull request: wireless 2012-02-20

[Andrei Emeltchenko]

Hi David,

On Tue, Feb 21, 2012 at 9:44 PM, David Miller <davem@davemloft.net> wrote:
> From: "John W. Linville" <linville@tuxdriver.com>
> Date: Tue, 21 Feb 2012 10:14:36 -0500
>
>> On Mon, Feb 20, 2012 at 07:23:24PM -0500, David Miller wrote:
>>> From: "John W. Linville" <linville@tuxdriver.com>
>>> Date: Mon, 20 Feb 2012 15:37:40 -0500
>>>
>>> > Here is another batch of fixes intended for 3.3.  Most of the fixes
>>> > this time are for Bluetooth.
>>>
>>> Pulled, but please read the bluetooth changes more carefully in the
>>> future, there were a lot of coding style errors introduced this
>>> time around.
>>
>> I pinged Johan about this, and he tells me that he spoke to Marcel
>> as well.  They were a bit unsure about the issue.  Is your concern
>> primarily about some excessive tabbing for indentation of parameters
>> and such?
>
> So you actually looked at the changes you pushed to me and you are
> telling me you personally can't find anything that looks like garbage?
>
> Really?  Do I really have to point out such obvious stuff like this?
> Are you serious?
>
> Look at ca0d6c7ece0e78268cd7c5c378d6b1b610625085 ("Bluetooth: Add
> missing QUIRK_NO_RESET test to hci_dev_do_close")
>
> You tell me what the heck you think of this thing.
>
> -       if (!test_bit(HCI_RAW, &hdev->flags)) {
> +       if (!test_bit(HCI_RAW, &hdev->flags) &&
> +                               test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks)) {
>
> That's disgusting, it jumps off the screen and says "Hello, I am ugly
> as sin".  How in the world can you miss something like this?  Four
> TABs on the second line?  Why?  I can't believe we even have to discuss
> something like this, seriously.

Sorry did we understand wrong text of Linux coding style? Or do we need
right interpretation of it?

http://www.kernel.org/doc/Documentation/CodingStyle

Statements longer than 80 columns will be broken into sensible chunks.
Descendants are always substantially shorter than the parent and are placed
substantially to the right. The same applies to function headers with a long
argument list. Long strings are as well broken into shorter strings. The
only exception to this is where exceeding 80 columns significantly increases
readability and does not hide information.

void fun(int a, int b, int c)
{
	if (condition)
		printk(KERN_WARNING "Warning this is a long printk with "
						"3 parameters a: %u b: %u "
						"c: %u \n", a, b, c);
	else
		next_statement;
}

>
> Commit 6e1da683f79a22fafaada62d547138daaa9e3456 ("Bluetooth: l2cap_set_timer
> needs jiffies as timeout value"):
>
> -               __set_chan_timer(chan, L2CAP_DISC_REJ_TIMEOUT);
> +               __set_chan_timer(chan,
> +                               msecs_to_jiffies(L2CAP_DISC_REJ_TIMEOUT));
>
> You can't see that mis-tabbed thing on the second new line?  Really?

Are those lines longer then 80 characters?
Otherwise same applies here.

Regards,
Andrei

Re: pull request: wireless 2012-02-20

[David Miller]

From: Andrei Emeltchenko <andrei.emeltchenko.news@gmail.com>
Date: Tue, 21 Feb 2012 22:38:16 +0200

> Hi David,
> 
> On Tue, Feb 21, 2012 at 9:44 PM, David Miller <davem@davemloft.net> wrote:
>> From: "John W. Linville" <linville@tuxdriver.com>
>> Date: Tue, 21 Feb 2012 10:14:36 -0500
>>
>>> On Mon, Feb 20, 2012 at 07:23:24PM -0500, David Miller wrote:
>>>> From: "John W. Linville" <linville@tuxdriver.com>
>>>> Date: Mon, 20 Feb 2012 15:37:40 -0500
>>>>
>>>> > Here is another batch of fixes intended for 3.3.  Most of the fixes
>>>> > this time are for Bluetooth.
>>>>
>>>> Pulled, but please read the bluetooth changes more carefully in the
>>>> future, there were a lot of coding style errors introduced this
>>>> time around.
>>>
>>> I pinged Johan about this, and he tells me that he spoke to Marcel
>>> as well.  They were a bit unsure about the issue.  Is your concern
>>> primarily about some excessive tabbing for indentation of parameters
>>> and such?
>>
>> So you actually looked at the changes you pushed to me and you are
>> telling me you personally can't find anything that looks like garbage?
>>
>> Really?  Do I really have to point out such obvious stuff like this?
>> Are you serious?
>>
>> Look at ca0d6c7ece0e78268cd7c5c378d6b1b610625085 ("Bluetooth: Add
>> missing QUIRK_NO_RESET test to hci_dev_do_close")
>>
>> You tell me what the heck you think of this thing.
>>
>> -       if (!test_bit(HCI_RAW, &hdev->flags)) {
>> +       if (!test_bit(HCI_RAW, &hdev->flags) &&
>> +                               test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks)) {
>>
>> That's disgusting, it jumps off the screen and says "Hello, I am ugly
>> as sin".  How in the world can you miss something like this?  Four
>> TABs on the second line?  Why?  I can't believe we even have to discuss
>> something like this, seriously.
> 
> Sorry did we understand wrong text of Linux coding style? Or do we need
> right interpretation of it?

I'm not engaging in this conversation any more, I don't care what CodingStyle
says, the quoted code is garbage.

[PATCH] checkpatch: Add some --strict coding style checks

[Joe Perches]

Argument alignment across multiple lines should
match the open parenthesis.

Logical continuations should be at the end of
the previous line, not the start of a new line.

These are not required by CodingStyle so make the
tests active only when using --strict.

Tested with:
int foo(void)
{
	if (foo &&
	    bar())
		baz();

	if (foo &&
	     bar())
		baz();

	foo_some_long_function(bar,
			       baz);

	foo_some_long_function(bar,
		baz);

	return 0;
}

Signed-off-by: Joe Perches <joe@perches.com>
---
 scripts/checkpatch.pl |   22 ++++++++++++++++++++++
 1 files changed, 22 insertions(+), 0 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index a3b9782..629944e 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1783,6 +1783,28 @@ sub process {
 			     "please, no space before tabs\n" . $herevet);
 		}
 
+# check for && or || at the start of a line
+		if ($rawline =~ /^\+\s*(&&|\|\|)/) {
+			CHK("LOGICAL_CONTINUATIONS",
+			    "Logical continuations should be on the previous line\n" . $hereprev);
+		}
+
+# check multi-line statement indentation matches previous line
+		if ($prevline =~ /^\+(\t*)(if \(|$Ident\().*(\&\&|\|\||,)\s*$/ && $rawline =~ /^\+([ \t]*)/) {
+			$prevline =~ /^\+(\t*)(if \(|$Ident\().*(\&\&|\|\||,)\s*$/;
+			my $oldindent = $1;
+			my $if_or_func = $2;
+			$rawline =~ /^\+([ \t]*)/;
+			my $newindent = $1;
+			my $goodindent = $oldindent .
+					 "\t" x (length($if_or_func) / 8) .
+					 " "  x (length($if_or_func) % 8);
+			if ($newindent ne "$goodindent") {
+				CHK("PARENTHESIS_ALIGNMENT",
+				    "Alignment should match open parenthesis\n" . $hereprev);
+			}
+		}
+
 # check for spaces at the beginning of a line.
 # Exceptions:
 #  1) within comments

Re: [PATCH] checkpatch: Add some --strict coding style checks

[Andrew Morton]

Speaking of which, I just got this:

WARNING: %Ld/%Lu are not-standard C, use %lld/%llu
#142: FILE: fs/locks.c:2335:
+                       seq_printf(f, "Start-end:\t %Ld-EOF\n\n", fl->fl_start);

But %L saves a byte!  Why did we do this?  Don't you like puppies?

Re: [PATCH] checkpatch: Add some --strict coding style checks

[Joe Perches]

On Tue, 2012-02-21 at 13:09 -0800, Andrew Morton wrote:
> Speaking of which, I just got this:
> 
> WARNING: %Ld/%Lu are not-standard C, use %lld/%llu
> #142: FILE: fs/locks.c:2335:
> +                       seq_printf(f, "Start-end:\t %Ld-EOF\n\n", fl->fl_start);
> 
> But %L saves a byte!  Why did we do this?  Don't you like puppies?

Beats me and I prefer kittens.

RE: [PATCH] checkpatch: Add some --strict coding style checks

[Allan, Bruce W]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="utf-8", Size: 3018 bytes --]

> -----Original Message-----
> From: linux-kernel-owner@vger.kernel.org [mailto:linux-kernel-
> owner@vger.kernel.org] On Behalf Of Joe Perches
> Sent: Tuesday, February 21, 2012 12:59 PM
> To: David Miller; Andy Whitcroft; Andrew Morton
> Cc: andrei.emeltchenko.news@gmail.com; linville@tuxdriver.com; linux-
> wireless@vger.kernel.org; netdev@vger.kernel.org; linux-
> kernel@vger.kernel.org
> Subject: [PATCH] checkpatch: Add some --strict coding style checks
> 
> Argument alignment across multiple lines should
> match the open parenthesis.
> 
> Logical continuations should be at the end of
> the previous line, not the start of a new line.
> 
> These are not required by CodingStyle so make the
> tests active only when using --strict.
> 
> Tested with:
> int foo(void)
> {
> 	if (foo &&
> 	    bar())
> 		baz();
> 
> 	if (foo &&
> 	     bar())
> 		baz();
> 
> 	foo_some_long_function(bar,
> 			       baz);
> 
> 	foo_some_long_function(bar,
> 		baz);
> 
> 	return 0;
> }
> 
> Signed-off-by: Joe Perches <joe@perches.com>
> ---
>  scripts/checkpatch.pl |   22 ++++++++++++++++++++++
>  1 files changed, 22 insertions(+), 0 deletions(-)
> 
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index a3b9782..629944e 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -1783,6 +1783,28 @@ sub process {
>  			     "please, no space before tabs\n" . $herevet);
>  		}
> 
> +# check for && or || at the start of a line
> +		if ($rawline =~ /^\+\s*(&&|\|\|)/) {
> +			CHK("LOGICAL_CONTINUATIONS",
> +			    "Logical continuations should be on the previous
> line\n" . $hereprev);
> +		}
> +
> +# check multi-line statement indentation matches previous line
> +		if ($prevline =~ /^\+(\t*)(if
> \(|$Ident\().*(\&\&|\|\||,)\s*$/ && $rawline =~ /^\+([ \t]*)/) {
> +			$prevline =~ /^\+(\t*)(if
> \(|$Ident\().*(\&\&|\|\||,)\s*$/;
> +			my $oldindent = $1;
> +			my $if_or_func = $2;
> +			$rawline =~ /^\+([ \t]*)/;
> +			my $newindent = $1;
> +			my $goodindent = $oldindent .
> +					 "\t" x (length($if_or_func) / 8) .
> +					 " "  x (length($if_or_func) % 8);
> +			if ($newindent ne "$goodindent") {
> +				CHK("PARENTHESIS_ALIGNMENT",
> +				    "Alignment should match open
> parenthesis\n" . $hereprev);
> +			}
> +		}
> +
>  # check for spaces at the beginning of a line.
>  # Exceptions:
>  #  1) within comments

This appears to falsely complain about parenthesis alignment in conditional statements with multiple opening parentheses.  For example, these will report a check condition:

	if (test_and_set_bit(nr,
				   addr))
		baz();

	if (!(func_a(x) &&
		func_b(y)))
		baz();

Assuming my stupid mailer will screw up the indentation above, the 'a' in addr in the first example is meant to be immediately below the 'n' in nr, and the two 'f's in func_* are meant to be vertically lined up in the second example.


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RE: [PATCH] checkpatch: Add some --strict coding style checks

[Joe Perches]

On Tue, 2012-02-21 at 22:09 +0000, Allan, Bruce W wrote:
> This appears to falsely complain about parenthesis alignment in
> conditional statements with multiple opening parentheses.  For
> example, these will report a check condition:
> 
> 	if (test_and_set_bit(nr,
> 				   addr))
> 		baz();
> 
> 	if (!(func_a(x) &&
> 		func_b(y)))
> 		baz();
> 
> Assuming my stupid mailer will screw up the indentation above, the 'a'
> in addr in the first example is meant to be immediately below the 'n'
> in nr, and the two 'f's in func_* are meant to be vertically lined up
> in the second example.

You're right, thanks for testing.
The logic I used is too trivial.

Andrew, please ditch this one for awhile.

RE: [PATCH] checkpatch: Add some --strict coding style checks

[Joe Perches]

On Tue, 2012-02-21 at 22:09 +0000, Allan, Bruce W wrote:
> This appears to falsely complain about parenthesis alignment in
> conditional statements with multiple opening parentheses.

Hey Allan.

Can you try this one please?
---
 scripts/checkpatch.pl |   58 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 58 insertions(+), 0 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index a3b9782..e95419e 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1330,6 +1330,35 @@ sub check_absolute_file {
 	}
 }
 
+sub pos_last_openparen {
+
+	my ($args) = @_;
+
+	my $pos = 0;
+	my $len = length($args);
+
+	my $opens = $args =~ tr/\(/\(/;
+	my $closes = $args =~ tr/\)/\)/;
+
+	my $last_openparen = 0;
+
+	if (($opens == 0) || ($closes >= $opens)) {
+		return 0;
+	}
+
+	for ($pos = 0; $pos < $len; $pos++) {
+		if (substr($args, $pos) =~ /^($FuncArg)/) {
+			$pos += length($1);
+		}
+
+		if (substr($args, $pos, 1) eq '(') {
+			$last_openparen = $pos;
+		}
+	}
+
+	return $last_openparen + 1;
+}
+
 sub process {
 	my $filename = shift;
 
@@ -1783,6 +1812,35 @@ sub process {
 			     "please, no space before tabs\n" . $herevet);
 		}
 
+# check for && or || at the start of a line
+		if ($rawline =~ /^\+\s*(&&|\|\|)/) {
+			CHK("LOGICAL_CONTINUATIONS",
+			    "Logical continuations should be on the previous line\n" . $hereprev);
+		}
+
+# check multi-line statement indentation matches previous line
+		if ($prevline =~ /^\+(\t*)(if \(|$Ident\().*(\&\&|\|\||,)\s*$/ && $rawline =~ /^\+([ \t]*)/) {
+			$prevline =~ /^\+(\t*)(if \(|$Ident\()(.*)(\&\&|\|\||,)\s*$/;
+			my $oldindent = $1;
+			my $if_or_func = $2;
+			my $args = $3;
+
+			my $pos = pos_last_openparen($args);
+
+			my $len = length($if_or_func) + $pos;
+			$rawline =~ /^\+([ \t]*)/;
+			my $newindent = $1;
+
+			my $goodindent = $oldindent .
+					 "\t" x ($len / 8) .
+					 " "  x ($len % 8);
+
+			if ($newindent ne $goodindent) {
+				CHK("PARENTHESIS_ALIGNMENT",
+				    "Alignment should match open parenthesis\n" . $hereprev);
+			}
+		}
+
 # check for spaces at the beginning of a line.
 # Exceptions:
 #  1) within comments

RE: [PATCH] checkpatch: Add some --strict coding style checks

[Allan, Bruce W]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="utf-8", Size: 2999 bytes --]

> -----Original Message-----
> From: Joe Perches [mailto:joe@perches.com]
> Sent: Tuesday, February 21, 2012 5:36 PM
> To: Allan, Bruce W
> Cc: David Miller; Andy Whitcroft; Andrew Morton;
> andrei.emeltchenko.news@gmail.com; linville@tuxdriver.com; linux-
> wireless@vger.kernel.org; netdev@vger.kernel.org; linux-
> kernel@vger.kernel.org
> Subject: RE: [PATCH] checkpatch: Add some --strict coding style checks
> 
> On Tue, 2012-02-21 at 22:09 +0000, Allan, Bruce W wrote:
> > This appears to falsely complain about parenthesis alignment in
> > conditional statements with multiple opening parentheses.
> 
> Hey Allan.
> 
> Can you try this one please?
> ---
>  scripts/checkpatch.pl |   58
> +++++++++++++++++++++++++++++++++++++++++++++++++
>  1 files changed, 58 insertions(+), 0 deletions(-)
> 
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index a3b9782..e95419e 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -1330,6 +1330,35 @@ sub check_absolute_file {
>  	}
>  }
> 
> +sub pos_last_openparen {
> +
> +	my ($args) = @_;
> +
> +	my $pos = 0;
> +	my $len = length($args);
> +
> +	my $opens = $args =~ tr/\(/\(/;
> +	my $closes = $args =~ tr/\)/\)/;
> +
> +	my $last_openparen = 0;
> +
> +	if (($opens == 0) || ($closes >= $opens)) {
> +		return 0;
> +	}
> +
> +	for ($pos = 0; $pos < $len; $pos++) {
> +		if (substr($args, $pos) =~ /^($FuncArg)/) {
> +			$pos += length($1);
> +		}
> +
> +		if (substr($args, $pos, 1) eq '(') {
> +			$last_openparen = $pos;
> +		}
> +	}
> +
> +	return $last_openparen + 1;
> +}
> +
>  sub process {
>  	my $filename = shift;
> 
> @@ -1783,6 +1812,35 @@ sub process {
>  			     "please, no space before tabs\n" . $herevet);
>  		}
> 
> +# check for && or || at the start of a line
> +		if ($rawline =~ /^\+\s*(&&|\|\|)/) {
> +			CHK("LOGICAL_CONTINUATIONS",
> +			    "Logical continuations should be on the previous
> line\n" . $hereprev);
> +		}
> +
> +# check multi-line statement indentation matches previous line
> +		if ($prevline =~ /^\+(\t*)(if
> \(|$Ident\().*(\&\&|\|\||,)\s*$/ && $rawline =~ /^\+([ \t]*)/) {
> +			$prevline =~ /^\+(\t*)(if
> \(|$Ident\()(.*)(\&\&|\|\||,)\s*$/;
> +			my $oldindent = $1;
> +			my $if_or_func = $2;
> +			my $args = $3;
> +
> +			my $pos = pos_last_openparen($args);
> +
> +			my $len = length($if_or_func) + $pos;
> +			$rawline =~ /^\+([ \t]*)/;
> +			my $newindent = $1;
> +
> +			my $goodindent = $oldindent .
> +					 "\t" x ($len / 8) .
> +					 " "  x ($len % 8);
> +
> +			if ($newindent ne $goodindent) {
> +				CHK("PARENTHESIS_ALIGNMENT",
> +				    "Alignment should match open
> parenthesis\n" . $hereprev);
> +			}
> +		}
> +
>  # check for spaces at the beginning of a line.
>  # Exceptions:
>  #  1) within comments
> 

It's better, but there are still instances of false hits AFAICT.

Bruce.

ÿôèº{.nÇ+‰·Ÿ®‰­†+%ŠËÿ±éݶ\x17¥Šwÿº{.nÇ+‰·¥Š{±þG«éÿŠ{ayº\x1dʇڙë,j\a­¢f£¢·hšïêÿ‘êçz_è®\x03(­éšŽŠÝ¢j"ú\x1a¶^[m§ÿÿ¾\a«þG«éÿ¢¸?™¨è­Ú&£ø§~á¶iO•æ¬z·švØ^\x14\x04\x1a¶^[m§ÿÿÃ\fÿ¶ìÿ¢¸?–I¥

RE: [PATCH] checkpatch: Add some --strict coding style checks

[Joe Perches]

On Wed, 2012-02-22 at 01:56 +0000, Allan, Bruce W wrote:
> > On Tue, 2012-02-21 at 22:09 +0000, Allan, Bruce W wrote:
> > > This appears to falsely complain about parenthesis alignment in
> > > conditional statements with multiple opening parentheses.
> > Can you try this one please?
[]
> It's better, but there are still instances of false hits AFAICT.

Do you have any examples?
The only one I noticed was spaces for alignment instead of tabs.
I think that's not a false hit myself.

RE: [PATCH] checkpatch: Add some --strict coding style checks

[Allan, Bruce W]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="utf-8", Size: 1350 bytes --]

> -----Original Message-----
> From: Joe Perches [mailto:joe@perches.com]
> Sent: Tuesday, February 21, 2012 5:59 PM
> To: Allan, Bruce W
> Cc: David Miller; Andy Whitcroft; Andrew Morton;
> andrei.emeltchenko.news@gmail.com; linville@tuxdriver.com; linux-
> wireless@vger.kernel.org; netdev@vger.kernel.org; linux-
> kernel@vger.kernel.org
> Subject: RE: [PATCH] checkpatch: Add some --strict coding style checks
> 
> On Wed, 2012-02-22 at 01:56 +0000, Allan, Bruce W wrote:
> > > On Tue, 2012-02-21 at 22:09 +0000, Allan, Bruce W wrote:
> > > > This appears to falsely complain about parenthesis alignment in
> > > > conditional statements with multiple opening parentheses.
> > > Can you try this one please?
> []
> > It's better, but there are still instances of false hits AFAICT.
> 
> Do you have any examples?
> The only one I noticed was spaces for alignment instead of tabs.
> I think that's not a false hit myself.
> 

Example 1:
	if (((a == b) ||
	     (c == d) ||
	     (e == f)) &&
	    (bool_var))
		baz();

Example 2:
	if ((!(var & FOO_MASK) &&
	     (a == b)) ||
	    (c == d))
		baz();

Example 3:
	if (!((foo & FOO_MASK) &&
	      (bar & BAR_MASK)))
		baz();

HTH,
Bruce.
ÿôèº{.nÇ+‰·Ÿ®‰­†+%ŠËÿ±éݶ\x17¥Šwÿº{.nÇ+‰·¥Š{±þG«éÿŠ{ayº\x1dʇڙë,j\a­¢f£¢·hšïêÿ‘êçz_è®\x03(­éšŽŠÝ¢j"ú\x1a¶^[m§ÿÿ¾\a«þG«éÿ¢¸?™¨è­Ú&£ø§~á¶iO•æ¬z·švØ^\x14\x04\x1a¶^[m§ÿÿÃ\fÿ¶ìÿ¢¸?–I¥

RE: [PATCH] checkpatch: Add some --strict coding style checks

[David Laight]

 
> 	if (!(func_a(x) &&
> 		func_b(y)))
> 		baz();

Gah - that is horrid for the 'preferred style'.
A quick glance at the code puts both the func_b()
and baz() calls as inside the if.

	David

RE: [PATCH] checkpatch: Add some --strict coding style checks

[Johannes Berg]

On Wed, 2012-02-22 at 09:35 +0000, David Laight wrote:
> > 	if (!(func_a(x) &&
> > 		func_b(y)))
> > 		baz();
> 
> Gah - that is horrid for the 'preferred style'.
> A quick glance at the code puts both the func_b()
> and baz() calls as inside the if.

You forgot to read/quote the rest of Allan's email:

> Assuming my stupid mailer will screw up the indentation above, the 'a'
> in addr in the first example is meant to be immediately below the 'n'
> in nr, and the two 'f's in func_* are meant to be vertically lined up
> in the second example.

johannes

Re: pull request: wireless 2012-02-20

[Zefir Kurtisi]

On 02/21/2012 09:40 PM, David Miller wrote:
> From: Andrei Emeltchenko <andrei.emeltchenko.news@gmail.com>
> Date: Tue, 21 Feb 2012 22:38:16 +0200
> 
>> Hi David,
>>
>> On Tue, Feb 21, 2012 at 9:44 PM, David Miller <davem@davemloft.net> wrote:
>>> From: "John W. Linville" <linville@tuxdriver.com>
>>> Date: Tue, 21 Feb 2012 10:14:36 -0500
>>> [...]
>>
>> Sorry did we understand wrong text of Linux coding style? Or do we need
>> right interpretation of it?
> 
> I'm not engaging in this conversation any more, I don't care what CodingStyle
> says, the quoted code is garbage.

This is not really helpful, David.

Andrei's question was fully reasonable here, i.e. the Documentation/CodingStyle is the only binding reference given to potential contributors -- the common 'how-to-contribute-kernel-patches' docs non-24/7-kernel-folks usually find and follow on the way preparing patches end exactly there.

I recently learned the hard way when my patches were ignored just because of some missing spaces. That would be perfectly fair if some formal rules were broken, but not telling people about additional informal ones is not motivating.


I might be fully blind and just missed the related coding style document that covers the issues discussed here. But even then your answer should be 'RTFM' instead of just ending the conversation.


Cheers, Zefir

RE: [PATCH] checkpatch: Add some --strict coding style checks

[Joe Perches]

On Wed, 2012-02-22 at 02:17 +0000, Allan, Bruce W wrote:
> Example 1:
> 	if (((a == b) ||
> 	     (c == d) ||
> 	     (e == f)) &&
> 	    (bool_var))
> 		baz();
> 
> Example 2:
> 	if ((!(var & FOO_MASK) &&
> 	     (a == b)) ||
> 	    (c == d))
> 		baz();
> 
> Example 3:
> 	if (!((foo & FOO_MASK) &&
> 	      (bar & BAR_MASK)))
> 		baz();
> 

Hi Bruce. (yay, I got your name right)

Thanks.

How about testing this?

It allows all spaces or appropriate tabs for indentation,
and I believe it works OK.

---
 scripts/checkpatch.pl |   65 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 63 insertions(+), 2 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 89d24b3..7a0514b 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -330,10 +330,11 @@ sub build_types {
 }
 build_types();
 
-our $match_balanced_parentheses = qr/(\((?:[^\(\)]+|(-1))*\))/;
+our $balanced_parens = qr/(\((?:[^\(\)]++|(?-1))*\))/;
+our $lval_parens = qr/(\((?:[^\(\)]+|(-1))*\))/;
 
 our $Typecast	= qr{\s*(\(\s*$NonptrType\s*\)){0,1}\s*};
-our $LvalOrFunc	= qr{($Lval)\s*($match_balanced_parentheses{0,1})\s*};
+our $LvalOrFunc	= qr{($Lval)\s*($lval_parens{0,1})\s*};
 our $FuncArg = qr{$Typecast{0,1}($LvalOrFunc|$Constant)};
 
 sub deparenthesize {
@@ -1330,6 +1331,36 @@ sub check_absolute_file {
 	}
 }
 
+sub pos_last_openparen {
+	my ($line) = @_;
+
+	my $pos = 0;
+
+	my $opens = $line =~ tr/\(/\(/;
+	my $closes = $line =~ tr/\)/\)/;
+
+	my $last_openparen = 0;
+
+	if (($opens == 0) || ($closes >= $opens)) {
+		return -1;
+	}
+
+	my $len = length($line);
+
+	for ($pos = 0; $pos < $len; $pos++) {
+	    my $string = substr($line, $pos);
+	    if ($string =~ /^($FuncArg|$balanced_parens)/) {
+		    $pos += length($1);
+	    }
+
+	    if (substr($line, $pos, 1) eq '(') {
+		$last_openparen = $pos;
+	    }
+	}
+
+	return $last_openparen + 1;
+}
+
 sub process {
 	my $filename = shift;
 
@@ -1783,6 +1814,36 @@ sub process {
 			     "please, no space before tabs\n" . $herevet);
 		}
 
+# check for && or || at the start of a line
+		if ($rawline =~ /^\+\s*(&&|\|\|)/) {
+			CHK("LOGICAL_CONTINUATIONS",
+			    "Logical continuations should be on the previous line\n" . $hereprev);
+		}
+
+# check multi-line statement indentation matches previous line
+		if ($prevline =~ /^\+(\t*)(if \(|$Ident\().*(\&\&|\|\||,)\s*$/) {
+			$prevline =~ /^\+(\t*)(.*)$/;
+			my $oldindent = $1;
+			my $rest = $2;
+
+			my $pos = pos_last_openparen($rest);
+			if ($pos >= 0) {
+				$line =~ /^\+([ \t]*)/;
+				my $newindent = $1;
+
+				my $goodtabindent = $oldindent .
+					"\t" x ($pos / 8) .
+					" "  x ($pos % 8);
+				my $goodspaceindent = $oldindent . " "  x $pos;
+
+				if ($newindent ne $goodtabindent &&
+				    $newindent ne $goodspaceindent) {
+					CHK("PARENTHESIS_ALIGNMENT",
+					    "Alignment should match open parenthesis\n" . $hereprev);
+				}
+			}
+		}
+
 # check for spaces at the beginning of a line.
 # Exceptions:
 #  1) within comments

RE: [PATCH] checkpatch: Add some --strict coding style checks

[Allan, Bruce W]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="utf-8", Size: 3582 bytes --]

> -----Original Message-----
> From: Joe Perches [mailto:joe@perches.com]
> Sent: Wednesday, February 22, 2012 7:44 PM
> To: Allan, Bruce W
> Cc: David Miller; Andy Whitcroft; Andrew Morton;
> andrei.emeltchenko.news@gmail.com; linville@tuxdriver.com; linux-
> wireless@vger.kernel.org; netdev@vger.kernel.org; linux-
> kernel@vger.kernel.org
> Subject: RE: [PATCH] checkpatch: Add some --strict coding style checks
> 
> Hi Bruce. (yay, I got your name right)
> 
> Thanks.
> 
> How about testing this?
> 
> It allows all spaces or appropriate tabs for indentation,
> and I believe it works OK.
> 
> ---
>  scripts/checkpatch.pl |   65
> +++++++++++++++++++++++++++++++++++++++++++++++-
>  1 files changed, 63 insertions(+), 2 deletions(-)
> 
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 89d24b3..7a0514b 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -330,10 +330,11 @@ sub build_types {
>  }
>  build_types();
> 
> -our $match_balanced_parentheses = qr/(\((?:[^\(\)]+|(-1))*\))/;
> +our $balanced_parens = qr/(\((?:[^\(\)]++|(?-1))*\))/;
> +our $lval_parens = qr/(\((?:[^\(\)]+|(-1))*\))/;
> 
>  our $Typecast	= qr{\s*(\(\s*$NonptrType\s*\)){0,1}\s*};
> -our $LvalOrFunc	=
> qr{($Lval)\s*($match_balanced_parentheses{0,1})\s*};
> +our $LvalOrFunc	= qr{($Lval)\s*($lval_parens{0,1})\s*};
>  our $FuncArg = qr{$Typecast{0,1}($LvalOrFunc|$Constant)};
> 
>  sub deparenthesize {
> @@ -1330,6 +1331,36 @@ sub check_absolute_file {
>  	}
>  }
> 
> +sub pos_last_openparen {
> +	my ($line) = @_;
> +
> +	my $pos = 0;
> +
> +	my $opens = $line =~ tr/\(/\(/;
> +	my $closes = $line =~ tr/\)/\)/;
> +
> +	my $last_openparen = 0;
> +
> +	if (($opens == 0) || ($closes >= $opens)) {
> +		return -1;
> +	}
> +
> +	my $len = length($line);
> +
> +	for ($pos = 0; $pos < $len; $pos++) {
> +	    my $string = substr($line, $pos);
> +	    if ($string =~ /^($FuncArg|$balanced_parens)/) {
> +		    $pos += length($1);
> +	    }
> +
> +	    if (substr($line, $pos, 1) eq '(') {
> +		$last_openparen = $pos;
> +	    }
> +	}
> +
> +	return $last_openparen + 1;
> +}
> +
>  sub process {
>  	my $filename = shift;
> 
> @@ -1783,6 +1814,36 @@ sub process {
>  			     "please, no space before tabs\n" . $herevet);
>  		}
> 
> +# check for && or || at the start of a line
> +		if ($rawline =~ /^\+\s*(&&|\|\|)/) {
> +			CHK("LOGICAL_CONTINUATIONS",
> +			    "Logical continuations should be on the previous
> line\n" . $hereprev);
> +		}
> +
> +# check multi-line statement indentation matches previous line
> +		if ($prevline =~ /^\+(\t*)(if
> \(|$Ident\().*(\&\&|\|\||,)\s*$/) {
> +			$prevline =~ /^\+(\t*)(.*)$/;
> +			my $oldindent = $1;
> +			my $rest = $2;
> +
> +			my $pos = pos_last_openparen($rest);
> +			if ($pos >= 0) {
> +				$line =~ /^\+([ \t]*)/;
> +				my $newindent = $1;
> +
> +				my $goodtabindent = $oldindent .
> +					"\t" x ($pos / 8) .
> +					" "  x ($pos % 8);
> +				my $goodspaceindent = $oldindent . " "  x
> $pos;
> +
> +				if ($newindent ne $goodtabindent &&
> +				    $newindent ne $goodspaceindent) {
> +					CHK("PARENTHESIS_ALIGNMENT",
> +					    "Alignment should match open
> parenthesis\n" . $hereprev);
> +				}
> +			}
> +		}
> +
>  # check for spaces at the beginning of a line.
>  # Exceptions:
>  #  1) within comments
> 

This latest version is much better.  It does not report false positives in the
limited code I checked it against.

Bruce.
ÿôèº{.nÇ+‰·Ÿ®‰­†+%ŠËÿ±éݶ\x17¥Šwÿº{.nÇ+‰·¥Š{±þG«éÿŠ{ayº\x1dʇڙë,j\a­¢f£¢·hšïêÿ‘êçz_è®\x03(­éšŽŠÝ¢j"ú\x1a¶^[m§ÿÿ¾\a«þG«éÿ¢¸?™¨è­Ú&£ø§~á¶iO•æ¬z·švØ^\x14\x04\x1a¶^[m§ÿÿÃ\fÿ¶ìÿ¢¸?–I¥

[PATCH v2] checkpatch: Add some --strict coding style checks

[Joe Perches]

Argument alignment across multiple lines should
match the open parenthesis.

Logical continuations should be at the end of
the previous line, not the start of a new line.

These are not required by CodingStyle so make the
tests active only when using --strict.

Improved_by_examples_from: "Bruce W. Allen" <bruce.w.allan@intel.com>
Signed-off-by: Joe Perches <joe@perches.com>

---

V2: Scan the entire line for balanced parentheses,
    use the position of the last non-balanced open parenthesis.
    Allow all space indentation too, checkpatch will complain
    in a different message about that if it's too long.

 scripts/checkpatch.pl |   65 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 63 insertions(+), 2 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 89d24b3..7a0514b 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -330,10 +330,11 @@ sub build_types {
 }
 build_types();
 
-our $match_balanced_parentheses = qr/(\((?:[^\(\)]+|(-1))*\))/;
+our $balanced_parens = qr/(\((?:[^\(\)]++|(?-1))*\))/;
+our $lval_parens = qr/(\((?:[^\(\)]+|(-1))*\))/;
 
 our $Typecast	= qr{\s*(\(\s*$NonptrType\s*\)){0,1}\s*};
-our $LvalOrFunc	= qr{($Lval)\s*($match_balanced_parentheses{0,1})\s*};
+our $LvalOrFunc	= qr{($Lval)\s*($lval_parens{0,1})\s*};
 our $FuncArg = qr{$Typecast{0,1}($LvalOrFunc|$Constant)};
 
 sub deparenthesize {
@@ -1330,6 +1331,36 @@ sub check_absolute_file {
 	}
 }
 
+sub pos_last_openparen {
+	my ($line) = @_;
+
+	my $pos = 0;
+
+	my $opens = $line =~ tr/\(/\(/;
+	my $closes = $line =~ tr/\)/\)/;
+
+	my $last_openparen = 0;
+
+	if (($opens == 0) || ($closes >= $opens)) {
+		return -1;
+	}
+
+	my $len = length($line);
+
+	for ($pos = 0; $pos < $len; $pos++) {
+		my $string = substr($line, $pos);
+		if ($string =~ /^($FuncArg|$balanced_parens)/) {
+			$pos += length($1);
+		}
+
+		if (substr($line, $pos, 1) eq '(') {
+			$last_openparen = $pos;
+		}
+	}
+
+	return $last_openparen + 1;
+}
+
 sub process {
 	my $filename = shift;
 
@@ -1783,6 +1814,36 @@ sub process {
 			     "please, no space before tabs\n" . $herevet);
 		}
 
+# check for && or || at the start of a line
+		if ($rawline =~ /^\+\s*(&&|\|\|)/) {
+			CHK("LOGICAL_CONTINUATIONS",
+			    "Logical continuations should be on the previous line\n" . $hereprev);
+		}
+
+# check multi-line statement indentation matches previous line
+		if ($prevline =~ /^\+(\t*)(if \(|$Ident\().*(\&\&|\|\||,)\s*$/) {
+			$prevline =~ /^\+(\t*)(.*)$/;
+			my $oldindent = $1;
+			my $rest = $2;
+
+			my $pos = pos_last_openparen($rest);
+			if ($pos >= 0) {
+				$line =~ /^\+([ \t]*)/;
+				my $newindent = $1;
+
+				my $goodtabindent = $oldindent .
+					"\t" x ($pos / 8) .
+					" "  x ($pos % 8);
+				my $goodspaceindent = $oldindent . " "  x $pos;
+
+				if ($newindent ne $goodtabindent &&
+				    $newindent ne $goodspaceindent) {
+					CHK("PARENTHESIS_ALIGNMENT",
+					    "Alignment should match open parenthesis\n" . $hereprev);
+				}
+			}
+		}
+
 # check for spaces at the beginning of a line.
 # Exceptions:
 #  1) within comments

Re: [PATCH v2] checkpatch: Add some --strict coding style checks

[Kalle Valo]

On 02/24/2012 08:37 PM, Joe Perches wrote:
> Argument alignment across multiple lines should
> match the open parenthesis.
> 
> Logical continuations should be at the end of
> the previous line, not the start of a new line.
> 
> These are not required by CodingStyle so make the
> tests active only when using --strict.
> 
> Improved_by_examples_from: "Bruce W. Allen" <bruce.w.allan@intel.com>
> Signed-off-by: Joe Perches <joe@perches.com>

Thanks Joe, this is very useful for me. I seem to have one false alarm
though:

drivers/net/wireless/ath/ath6kl/txrx.c:464: CHECK: Alignment should
match open parenthesis

This is with patches I haven't sent yet so line numbers most likely
don't match, but the code in question is this:

	if (!IS_ALIGNED((unsigned long) skb->data - HTC_HDR_LENGTH, 4) &&
	    skb_cloned(skb)) {

Apparently the cast "(unsigned long)" causes the false alarm as when I
remove it I don't see the warning anymore.

Kalle