Merge tag 'v3.4.105' into cm-12.0
This is the 3.4.105 stable release
Conflicts:
arch/arm/mm/proc-v7.S
drivers/bluetooth/hci_ldisc.c
drivers/media/dvb/dvb-core/dmxdev.c
drivers/usb/core/driver.c
drivers/usb/dwc3/core.c
drivers/usb/host/xhci-hub.c
drivers/usb/host/xhci.c
drivers/usb/serial/qcserial.c
drivers/usb/serial/usb_wwan.c
kernel/events/core.c
kernel/time/tick-sched.ck
kernel/futex.c
mm/memory_hotplug.c
mm/vmscan.c
net/bluetooth/hci_conn.c
net/bluetooth/hci_event.c
net/bluetooth/l2cap_core.c
net/ipv4/ping.c
net/wireless/nl80211.c
sound/soc/soc-core.c
Change-Id: Id09da84afb427ba1a32ff26e74f2bb86458d4a2e
diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c
index 49f3a85..395a555 100644
--- a/drivers/usb/serial/usb_wwan.c
+++ b/drivers/usb/serial/usb_wwan.c
@@ -236,8 +236,10 @@
usb_pipeendpoint(this_urb->pipe), i);
err = usb_autopm_get_interface_async(port->serial->interface);
- if (err < 0)
+ if (err < 0) {
+ clear_bit(i, &portdata->out_busy);
break;
+ }
/* send the data */
memcpy(this_urb->transfer_buffer, buf, todo);
@@ -518,6 +520,14 @@
set_bit(TTY_NO_WRITE_SPLIT, &tty->flags);
dbg("%s", __func__);
+ if (port->interrupt_in_urb) {
+ err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
+ if (err) {
+ dev_dbg(&port->dev, "%s: submit int urb failed: %d\n",
+ __func__, err);
+ }
+ }
+
/* Start reading from the IN endpoint */
for (i = 0; i < N_IN_URB; i++) {
urb = portdata->in_urbs[i];
@@ -546,12 +556,26 @@
}
EXPORT_SYMBOL(usb_wwan_open);
+static void unbusy_queued_urb(struct urb *urb,
+ struct usb_wwan_port_private *portdata)
+{
+ int i;
+
+ for (i = 0; i < N_OUT_URB; i++) {
+ if (urb == portdata->out_urbs[i]) {
+ clear_bit(i, &portdata->out_busy);
+ break;
+ }
+ }
+}
+
void usb_wwan_close(struct usb_serial_port *port)
{
int i;
struct usb_serial *serial = port->serial;
struct usb_wwan_port_private *portdata;
struct usb_wwan_intf_private *intfdata = port->serial->private;
+ struct urb *urb;
dbg("%s", __func__);
portdata = usb_get_serial_port_data(port);
@@ -562,10 +586,19 @@
portdata->opened = 0;
spin_unlock_irq(&intfdata->susp_lock);
+ for (;;) {
+ urb = usb_get_from_anchor(&portdata->delayed);
+ if (!urb)
+ break;
+ unbusy_queued_urb(urb, portdata);
+ usb_autopm_put_interface_async(serial->interface);
+ }
+
for (i = 0; i < N_IN_URB; i++)
usb_kill_urb(portdata->in_urbs[i]);
for (i = 0; i < N_OUT_URB; i++)
usb_kill_urb(portdata->out_urbs[i]);
+ usb_kill_urb(port->interrupt_in_urb);
/* balancing - important as an error cannot be handled*/
usb_autopm_get_interface_no_resume(serial->interface);
serial->interface->needs_remote_wakeup = 0;
@@ -641,7 +674,7 @@
int usb_wwan_startup(struct usb_serial *serial)
{
- int i, j, err;
+ int i, j;
struct usb_serial_port *port;
struct usb_wwan_port_private *portdata;
u8 *buffer;
@@ -678,12 +711,6 @@
}
usb_set_serial_port_data(port, portdata);
-
- if (!port->interrupt_in_urb)
- continue;
- err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
- if (err)
- dbg("%s: submit irq_in urb failed %d", __func__, err);
}
usb_wwan_setup_urbs(serial);
return 0;
@@ -769,46 +796,33 @@
int usb_wwan_suspend(struct usb_serial *serial, pm_message_t message)
{
struct usb_wwan_intf_private *intfdata = serial->private;
- int b;
dbg("%s entered", __func__);
+ spin_lock_irq(&intfdata->susp_lock);
if (PMSG_IS_AUTO(message)) {
- spin_lock_irq(&intfdata->susp_lock);
- b = intfdata->in_flight;
- spin_unlock_irq(&intfdata->susp_lock);
-
- if (b || pm_runtime_autosuspend_expiration(&serial->dev->dev))
+ if (intfdata->in_flight ||
+ pm_runtime_autosuspend_expiration(&serial->dev->dev)) {
+ spin_unlock_irq(&intfdata->susp_lock);
return -EBUSY;
+ }
}
- spin_lock_irq(&intfdata->susp_lock);
intfdata->suspended = 1;
spin_unlock_irq(&intfdata->susp_lock);
+
stop_read_write_urbs(serial);
return 0;
}
EXPORT_SYMBOL(usb_wwan_suspend);
-static void unbusy_queued_urb(struct urb *urb, struct usb_wwan_port_private *portdata)
-{
- int i;
-
- for (i = 0; i < N_OUT_URB; i++) {
- if (urb == portdata->out_urbs[i]) {
- clear_bit(i, &portdata->out_busy);
- break;
- }
- }
-}
-
-static void play_delayed(struct usb_serial_port *port)
+static int play_delayed(struct usb_serial_port *port)
{
struct usb_wwan_intf_private *data;
struct usb_wwan_port_private *portdata;
struct urb *urb;
- int err;
+ int err = 0;
portdata = usb_get_serial_port_data(port);
data = port->serial->private;
@@ -827,6 +841,8 @@
break;
}
}
+
+ return err;
}
int usb_wwan_resume(struct usb_serial *serial)
@@ -836,61 +852,53 @@
struct usb_wwan_intf_private *intfdata = serial->private;
struct usb_wwan_port_private *portdata;
struct urb *urb;
- int err = 0;
+ int err;
+ int err_count = 0;
dbg("%s entered", __func__);
- /* get the interrupt URBs resubmitted unconditionally */
- for (i = 0; i < serial->num_ports; i++) {
- port = serial->port[i];
- if (!port->interrupt_in_urb) {
- dbg("%s: No interrupt URB for port %d", __func__, i);
- continue;
- }
- err = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO);
- dbg("Submitted interrupt URB for port %d (result %d)", i, err);
- if (err < 0) {
- err("%s: Error %d for interrupt URB of port%d",
- __func__, err, i);
- goto err_out;
- }
- }
spin_lock_irq(&intfdata->susp_lock);
- intfdata->suspended = 0;
for (i = 0; i < serial->num_ports; i++) {
/* walk all ports */
port = serial->port[i];
portdata = usb_get_serial_port_data(port);
/* skip closed ports */
- if (!portdata->opened)
+ if (!portdata || !portdata->opened)
continue;
+ if (port->interrupt_in_urb) {
+ err = usb_submit_urb(port->interrupt_in_urb,
+ GFP_ATOMIC);
+ if (err) {
+ dev_err(&port->dev,
+ "%s: submit int urb failed: %d\n",
+ __func__, err);
+ err_count++;
+ }
+ }
+
+ err = play_delayed(port);
+ if (err)
+ err_count++;
+
for (j = 0; j < N_IN_URB; j++) {
urb = portdata->in_urbs[j];
-
- /* don't re-submit if it already was submitted or if
- * it is being processed by in_work */
- if (urb->anchor || !list_empty(&urb->urb_list))
- continue;
-
- usb_anchor_urb(urb, &portdata->submitted);
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err < 0) {
- err("%s: Error %d for bulk URB[%d]:%p %d",
- __func__, err, j, urb, i);
- usb_unanchor_urb(urb);
- intfdata->suspended = 1;
- spin_unlock_irq(&intfdata->susp_lock);
- goto err_out;
+ err("%s: Error %d for bulk URB %d",
+ __func__, err, i);
+ err_count++;
}
}
- play_delayed(port);
}
+ intfdata->suspended = 0;
spin_unlock_irq(&intfdata->susp_lock);
-err_out:
- return err;
+ if (err_count)
+ return -EIO;
+
+ return 0;
}
EXPORT_SYMBOL(usb_wwan_resume);
#endif