Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next

Johan Hedberg says:

====================
pull request: bluetooth-next 2017-08-18

Here's one more bluetooth-next pull request for the 4.14 kernel:

 - Multiple fixes for Broadcom controllers
 - Fixes to the bluecard HCI driver
 - New USB ID for Realtek RTL8723BE controller
 - Fix static analyzer warning with kfree

Please let me know if there are any issues pulling. Thanks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/devicetree/bindings/net/broadcom-bluetooth.txt

@@ -0,0 +1,35 @@
+Broadcom Bluetooth Chips
+---------------------
+
+This documents the binding structure and common properties for serial
+attached Broadcom devices.
+
+Serial attached Broadcom devices shall be a child node of the host UART
+device the slave device is attached to.
+
+Required properties:
+
+ - compatible: should contain one of the following:
+   * "brcm,bcm43438-bt"
+
+Optional properties:
+
+ - max-speed: see Documentation/devicetree/bindings/serial/slave-device.txt
+ - shutdown-gpios: GPIO specifier, used to enable the BT module
+ - device-wakeup-gpios: GPIO specifier, used to wakeup the controller
+ - host-wakeup-gpios: GPIO specifier, used to wakeup the host processor
+ - clocks: clock specifier if external clock provided to the controller
+ - clock-names: should be "extclk"
+
+
+Example:
+
+&uart2 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart2_pins>;
+
+       bluetooth {
+               compatible = "brcm,bcm43438-bt";
+               max-speed = <921600>;
+       };
+};

drivers/bluetooth/Kconfig

@@ -168,6 +168,7 @@ config BT_HCIUART_INTEL
 config BT_HCIUART_BCM
 	bool "Broadcom protocol support"
 	depends on BT_HCIUART
+	depends on BT_HCIUART_SERDEV
 	select BT_HCIUART_H4
 	select BT_BCM
 	help

drivers/bluetooth/bluecard_cs.c

@@ -93,6 +93,7 @@ static void bluecard_detach(struct pcmcia_device *p_dev);
 
 /* Hardware states */
 #define CARD_READY             1
+#define CARD_ACTIVITY	       2
 #define CARD_HAS_PCCARD_ID     4
 #define CARD_HAS_POWER_LED     5
 #define CARD_HAS_ACTIVITY_LED  6
@@ -160,16 +161,14 @@ static void bluecard_activity_led_timeout(u_long arg)
 	struct bluecard_info *info = (struct bluecard_info *)arg;
 	unsigned int iobase = info->p_dev->resource[0]->start;
 
-	if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
-		return;
-
-	if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
-		/* Disable activity LED */
-		outb(0x08 | 0x20, iobase + 0x30);
-	} else {
-		/* Disable power LED */
-		outb(0x00, iobase + 0x30);
+	if (test_bit(CARD_ACTIVITY, &(info->hw_state))) {
+		/* leave LED in inactive state for HZ/10 for blink effect */
+		clear_bit(CARD_ACTIVITY, &(info->hw_state));
+		mod_timer(&(info->timer), jiffies + HZ / 10);
 	}
+
+	/* Disable activity LED, enable power LED */
+	outb(0x08 | 0x20, iobase + 0x30);
 }
 
 
@@ -177,22 +176,22 @@ static void bluecard_enable_activity_led(struct bluecard_info *info)
 {
 	unsigned int iobase = info->p_dev->resource[0]->start;
 
-	if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
+	/* don't disturb running blink timer */
+	if (timer_pending(&(info->timer)))
 		return;
 
+	set_bit(CARD_ACTIVITY, &(info->hw_state));
+
 	if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
-		/* Enable activity LED */
-		outb(0x10 | 0x40, iobase + 0x30);
-
-		/* Stop the LED after HZ/4 */
-		mod_timer(&(info->timer), jiffies + HZ / 4);
+		/* Enable activity LED, keep power LED enabled */
+		outb(0x18 | 0x60, iobase + 0x30);
 	} else {
-		/* Enable power LED */
-		outb(0x08 | 0x20, iobase + 0x30);
-
-		/* Stop the LED after HZ/2 */
-		mod_timer(&(info->timer), jiffies + HZ / 2);
+		/* Disable power LED */
+		outb(0x00, iobase + 0x30);
 	}
+
+	/* Stop the LED after HZ/10 */
+	mod_timer(&(info->timer), jiffies + HZ / 10);
 }
 
 
@@ -625,16 +624,13 @@ static int bluecard_hci_flush(struct hci_dev *hdev)
 static int bluecard_hci_open(struct hci_dev *hdev)
 {
 	struct bluecard_info *info = hci_get_drvdata(hdev);
+	unsigned int iobase = info->p_dev->resource[0]->start;
 
 	if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
 		bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
 
-	if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
-		unsigned int iobase = info->p_dev->resource[0]->start;
-
-		/* Enable LED */
-		outb(0x08 | 0x20, iobase + 0x30);
-	}
+	/* Enable power LED */
+	outb(0x08 | 0x20, iobase + 0x30);
 
 	return 0;
 }
@@ -643,15 +639,15 @@ static int bluecard_hci_open(struct hci_dev *hdev)
 static int bluecard_hci_close(struct hci_dev *hdev)
 {
 	struct bluecard_info *info = hci_get_drvdata(hdev);
+	unsigned int iobase = info->p_dev->resource[0]->start;
 
 	bluecard_hci_flush(hdev);
 
-	if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
-		unsigned int iobase = info->p_dev->resource[0]->start;
+	/* Stop LED timer */
+	del_timer_sync(&(info->timer));
 
-		/* Disable LED */
-		outb(0x00, iobase + 0x30);
-	}
+	/* Disable power LED */
+	outb(0x00, iobase + 0x30);
 
 	return 0;
 }

drivers/bluetooth/btbcm.c

@@ -287,6 +287,37 @@ static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
 	return skb;
 }
 
+static int btbcm_read_info(struct hci_dev *hdev)
+{
+	struct sk_buff *skb;
+
+	/* Read Verbose Config Version Info */
+	skb = btbcm_read_verbose_config(hdev);
+	if (IS_ERR(skb))
+		return PTR_ERR(skb);
+
+	BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
+	kfree_skb(skb);
+
+	/* Read Controller Features */
+	skb = btbcm_read_controller_features(hdev);
+	if (IS_ERR(skb))
+		return PTR_ERR(skb);
+
+	BT_INFO("%s: BCM: features 0x%2.2x", hdev->name, skb->data[1]);
+	kfree_skb(skb);
+
+	/* Read Local Name */
+	skb = btbcm_read_local_name(hdev);
+	if (IS_ERR(skb))
+		return PTR_ERR(skb);
+
+	BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
+	kfree_skb(skb);
+
+	return 0;
+}
+
 static const struct {
 	u16 subver;
 	const char *name;
@@ -322,13 +353,10 @@ int btbcm_initialize(struct hci_dev *hdev, char *fw_name, size_t len)
 	subver = le16_to_cpu(ver->lmp_subver);
 	kfree_skb(skb);
 
-	/* Read Verbose Config Version Info */
-	skb = btbcm_read_verbose_config(hdev);
-	if (IS_ERR(skb))
-		return PTR_ERR(skb);
-
-	BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
-	kfree_skb(skb);
+	/* Read controller information */
+	err = btbcm_read_info(hdev);
+	if (err)
+		return err;
 
 	switch ((rev & 0xf000) >> 12) {
 	case 0:
@@ -431,29 +459,10 @@ int btbcm_setup_patchram(struct hci_dev *hdev)
 	subver = le16_to_cpu(ver->lmp_subver);
 	kfree_skb(skb);
 
-	/* Read Verbose Config Version Info */
-	skb = btbcm_read_verbose_config(hdev);
-	if (IS_ERR(skb))
-		return PTR_ERR(skb);
-
-	BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
-	kfree_skb(skb);
-
-	/* Read Controller Features */
-	skb = btbcm_read_controller_features(hdev);
-	if (IS_ERR(skb))
-		return PTR_ERR(skb);
-
-	BT_INFO("%s: BCM: features 0x%2.2x", hdev->name, skb->data[1]);
-	kfree_skb(skb);
-
-	/* Read Local Name */
-	skb = btbcm_read_local_name(hdev);
-	if (IS_ERR(skb))
-		return PTR_ERR(skb);
-
-	BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
-	kfree_skb(skb);
+	/* Read controller information */
+	err = btbcm_read_info(hdev);
+	if (err)
+		return err;
 
 	switch ((rev & 0xf000) >> 12) {
 	case 0:

drivers/bluetooth/btusb.c

@@ -66,6 +66,7 @@ static struct usb_driver btusb_driver;
 #define BTUSB_BCM2045		0x40000
 #define BTUSB_IFNUM_2		0x80000
 #define BTUSB_CW6622		0x100000
+#define BTUSB_BCM_NO_PRODID	0x200000
 
 static const struct usb_device_id btusb_table[] = {
 	/* Generic Bluetooth USB device */
@@ -170,6 +171,10 @@ static const struct usb_device_id btusb_table[] = {
 	{ USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 	  .driver_info = BTUSB_BCM_PATCHRAM },
 
+	/* Broadcom devices with missing product id */
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x0000, 0x0000, 0xff, 0x01, 0x01),
+	  .driver_info = BTUSB_BCM_PATCHRAM | BTUSB_BCM_NO_PRODID },
+
 	/* Intel Bluetooth USB Bootloader (RAM module) */
 	{ USB_DEVICE(0x8087, 0x0a5a),
 	  .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
@@ -359,6 +364,7 @@ static const struct usb_device_id blacklist_table[] = {
 	{ USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 	{ USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 	{ USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
+	{ USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 
 	/* Additional Realtek 8821AE Bluetooth devices */
 	{ USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
@@ -1082,6 +1088,10 @@ static int btusb_open(struct hci_dev *hdev)
 	}
 
 	data->intf->needs_remote_wakeup = 1;
+	/* device specific wakeup source enabled and required for USB
+	 * remote wakeup while host is suspended
+	 */
+	device_wakeup_enable(&data->udev->dev);
 
 	if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 		goto done;
@@ -1145,6 +1155,7 @@ static int btusb_close(struct hci_dev *hdev)
 		goto failed;
 
 	data->intf->needs_remote_wakeup = 0;
+	device_wakeup_disable(&data->udev->dev);
 	usb_autopm_put_interface(data->intf);
 
 failed:
@@ -2898,6 +2909,19 @@ static int btusb_probe(struct usb_interface *intf,
 	if (id->driver_info == BTUSB_IGNORE)
 		return -ENODEV;
 
+	if (id->driver_info & BTUSB_BCM_NO_PRODID) {
+		struct usb_device *udev = interface_to_usbdev(intf);
+
+		/* For the broken Broadcom devices that show 0000:0000
+		 * as USB vendor and product information, check that the
+		 * manufacturer string identifies them as Broadcom based
+		 * devices.
+		 */
+		if (!udev->manufacturer ||
+		    strcmp(udev->manufacturer, "Broadcom Corp"))
+			return -ENODEV;
+	}
+
 	if (id->driver_info & BTUSB_ATH3012) {
 		struct usb_device *udev = interface_to_usbdev(intf);
 

drivers/bluetooth/hci_bcm.c

@@ -27,6 +27,8 @@
 #include <linux/firmware.h>
 #include <linux/module.h>
 #include <linux/acpi.h>
+#include <linux/of.h>
+#include <linux/property.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
 #include <linux/gpio/consumer.h>
@@ -34,6 +36,7 @@
 #include <linux/interrupt.h>
 #include <linux/dmi.h>
 #include <linux/pm_runtime.h>
+#include <linux/serdev.h>
 
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
@@ -41,11 +44,15 @@
 #include "btbcm.h"
 #include "hci_uart.h"
 
+#define BCM_NULL_PKT 0x00
+#define BCM_NULL_SIZE 0
+
 #define BCM_LM_DIAG_PKT 0x07
 #define BCM_LM_DIAG_SIZE 63
 
 #define BCM_AUTOSUSPEND_DELAY	5000 /* default autosleep delay */
 
+/* platform device driver resources */
 struct bcm_device {
 	struct list_head	list;
 
@@ -59,6 +66,7 @@ struct bcm_device {
 	bool			clk_enabled;
 
 	u32			init_speed;
+	u32			oper_speed;
 	int			irq;
 	u8			irq_polarity;
 
@@ -68,6 +76,12 @@ struct bcm_device {
 #endif
 };
 
+/* serdev driver resources */
+struct bcm_serdev {
+	struct hci_uart hu;
+};
+
+/* generic bcm uart resources */
 struct bcm_data {
 	struct sk_buff		*rx_skb;
 	struct sk_buff_head	txq;
@@ -79,6 +93,14 @@ struct bcm_data {
 static DEFINE_MUTEX(bcm_device_lock);
 static LIST_HEAD(bcm_device_list);
 
+static inline void host_set_baudrate(struct hci_uart *hu, unsigned int speed)
+{
+	if (hu->serdev)
+		serdev_device_set_baudrate(hu->serdev, speed);
+	else
+		hci_uart_set_baudrate(hu, speed);
+}
+
 static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed)
 {
 	struct hci_dev *hdev = hu->hdev;
@@ -289,6 +311,14 @@ static int bcm_open(struct hci_uart *hu)
 
 	hu->priv = bcm;
 
+	/* If this is a serdev defined device, then only use
+	 * serdev open primitive and skip the rest.
+	 */
+	if (hu->serdev) {
+		serdev_device_open(hu->serdev);
+		goto out;
+	}
+
 	if (!hu->tty->dev)
 		goto out;
 
@@ -303,6 +333,7 @@ static int bcm_open(struct hci_uart *hu)
 		if (hu->tty->dev->parent == dev->pdev->dev.parent) {
 			bcm->dev = dev;
 			hu->init_speed = dev->init_speed;
+			hu->oper_speed = dev->oper_speed;
 #ifdef CONFIG_PM
 			dev->hu = hu;
 #endif
@@ -323,6 +354,12 @@ static int bcm_close(struct hci_uart *hu)
 
 	bt_dev_dbg(hu->hdev, "hu %p", hu);
 
+	/* If this is a serdev defined device, only use serdev
+	 * close primitive and then continue as usual.
+	 */
+	if (hu->serdev)
+		serdev_device_close(hu->serdev);
+
 	/* Protect bcm->dev against removal of the device or driver */
 	mutex_lock(&bcm_device_lock);
 	if (bcm_device_exists(bdev)) {
@@ -398,7 +435,7 @@ static int bcm_setup(struct hci_uart *hu)
 		speed = 0;
 
 	if (speed)
-		hci_uart_set_baudrate(hu, speed);
+		host_set_baudrate(hu, speed);
 
 	/* Operational speed if any */
 	if (hu->oper_speed)
@@ -411,7 +448,7 @@ static int bcm_setup(struct hci_uart *hu)
 	if (speed) {
 		err = bcm_set_baudrate(hu, speed);
 		if (!err)
-			hci_uart_set_baudrate(hu, speed);
+			host_set_baudrate(hu, speed);
 	}
 
 finalize:
@@ -434,11 +471,19 @@ finalize:
 	.lsize = 0, \
 	.maxlen = BCM_LM_DIAG_SIZE
 
+#define BCM_RECV_NULL \
+	.type = BCM_NULL_PKT, \
+	.hlen = BCM_NULL_SIZE, \
+	.loff = 0, \
+	.lsize = 0, \
+	.maxlen = BCM_NULL_SIZE
+
 static const struct h4_recv_pkt bcm_recv_pkts[] = {
 	{ H4_RECV_ACL,      .recv = hci_recv_frame },
 	{ H4_RECV_SCO,      .recv = hci_recv_frame },
 	{ H4_RECV_EVENT,    .recv = hci_recv_frame },
 	{ BCM_RECV_LM_DIAG, .recv = hci_recv_diag  },
+	{ BCM_RECV_NULL,    .recv = hci_recv_diag  },
 };
 
 static int bcm_recv(struct hci_uart *hu, const void *data, int count)
@@ -699,8 +744,10 @@ static int bcm_resource(struct acpi_resource *ares, void *data)
 
 	case ACPI_RESOURCE_TYPE_SERIAL_BUS:
 		sb = &ares->data.uart_serial_bus;
-		if (sb->type == ACPI_RESOURCE_SERIAL_TYPE_UART)
+		if (sb->type == ACPI_RESOURCE_SERIAL_TYPE_UART) {
 			dev->init_speed = sb->default_baud_rate;
+			dev->oper_speed = 4000000;
+		}
 		break;
 
 	default:
@@ -853,7 +900,6 @@ static const struct hci_uart_proto bcm_proto = {
 	.name		= "Broadcom",
 	.manufacturer	= 15,
 	.init_speed	= 115200,
-	.oper_speed	= 4000000,
 	.open		= bcm_open,
 	.close		= bcm_close,
 	.flush		= bcm_flush,
@@ -903,9 +949,57 @@ static struct platform_driver bcm_driver = {
 	},
 };
 
+static int bcm_serdev_probe(struct serdev_device *serdev)
+{
+	struct bcm_serdev *bcmdev;
+	u32 speed;
+	int err;
+
+	bcmdev = devm_kzalloc(&serdev->dev, sizeof(*bcmdev), GFP_KERNEL);
+	if (!bcmdev)
+		return -ENOMEM;
+
+	bcmdev->hu.serdev = serdev;
+	serdev_device_set_drvdata(serdev, bcmdev);
+
+	err = device_property_read_u32(&serdev->dev, "max-speed", &speed);
+	if (!err)
+		bcmdev->hu.oper_speed = speed;
+
+	return hci_uart_register_device(&bcmdev->hu, &bcm_proto);
+}
+
+static void bcm_serdev_remove(struct serdev_device *serdev)
+{
+	struct bcm_serdev *bcmdev = serdev_device_get_drvdata(serdev);
+
+	hci_uart_unregister_device(&bcmdev->hu);
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id bcm_bluetooth_of_match[] = {
+	{ .compatible = "brcm,bcm43438-bt" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, bcm_bluetooth_of_match);
+#endif
+
+static struct serdev_device_driver bcm_serdev_driver = {
+	.probe = bcm_serdev_probe,
+	.remove = bcm_serdev_remove,
+	.driver = {
+		.name = "hci_uart_bcm",
+		.of_match_table = of_match_ptr(bcm_bluetooth_of_match),
+	},
+};
+
 int __init bcm_init(void)
 {
+	/* For now, we need to keep both platform device
+	 * driver (ACPI generated) and serdev driver (DT).
+	 */
 	platform_driver_register(&bcm_driver);
+	serdev_device_driver_register(&bcm_serdev_driver);
 
 	return hci_uart_register_proto(&bcm_proto);
 }
@@ -913,6 +1007,7 @@ int __init bcm_init(void)
 int __exit bcm_deinit(void)
 {
 	platform_driver_unregister(&bcm_driver);
+	serdev_device_driver_unregister(&bcm_serdev_driver);
 
 	return hci_uart_unregister_proto(&bcm_proto);
 }

net/bluetooth/Kconfig

@@ -45,6 +45,11 @@ config BT_BREDR
 	bool "Bluetooth Classic (BR/EDR) features"
 	depends on BT
 	default y
+	help
+	  Bluetooth Classic includes support for Basic Rate (BR)
+	  available with Bluetooth version 1.0b or later and support
+	  for Enhanced Data Rate (EDR) available with Bluetooth
+	  version 2.0 or later.
 
 source "net/bluetooth/rfcomm/Kconfig"
 
@@ -58,11 +63,18 @@ config BT_HS
 	bool "Bluetooth High Speed (HS) features"
 	depends on BT_BREDR
 	default y
+	help
+	  Bluetooth High Speed includes support for off-loading
+	  Bluetooth connections via 802.11 (wifi) physical layer
+	  available with Bluetooth version 3.0 or later.
 
 config BT_LE
 	bool "Bluetooth Low Energy (LE) features"
 	depends on BT
 	default y
+	help
+	  Bluetooth Low Energy includes support low-energy physical
+	  layer available with Bluetooth version 4.0 or later.
 
 config BT_6LOWPAN
 	tristate "Bluetooth 6LoWPAN support"

net/bluetooth/selftest.c

@@ -164,7 +164,7 @@ static int __init test_ecdh_sample(const u8 priv_a[32], const u8 priv_b[32],
 		ret = -EINVAL;
 
 out:
-	kfree(dhkey_a);
+	kfree(tmp);
 	return ret;
 }