Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (220 commits)
  USB: backlight, appledisplay: fix incomplete registration failure handling
  USB: pl2303: remove unnecessary reset of usb_device in urbs
  USB: ftdi_sio: remove obsolete check in unthrottle
  USB: ftdi_sio: remove unused tx_bytes counter
  USB: qcaux: driver for auxiliary serial ports on Qualcomm devices
  USB: pl2303: initial TIOCGSERIAL support
  USB: option: add Longcheer/Longsung vendor ID
  USB: fix I2C API usage in ohci-pnx4008.
  USB: usbmon: mask seconds properly in text API
  USB: sisusbvga: no unnecessary GFP_ATOMIC
  USB: storage: onetouch: unnecessary GFP_ATOMIC
  USB: serial: ftdi: add CONTEC vendor and product id
  USB: remove references to port->port.count from the serial drivers
  USB: tty: Prune uses of tty_request_room in the USB layer
  USB: tty: Add a function to insert a string of characters with the same flag
  USB: don't read past config->interface[] if usb_control_msg() fails in usb_reset_configuration()
  USB: tty: kill request_room for USB ACM class
  USB: tty: sort out the request_room handling for whiteheat
  USB: storage: fix misplaced parenthesis
  USB: vstusb.c: removal of driver for Vernier Software & Technology, Inc., devices and spectrometers
  ...

5 files changed, 60 insertions, 50 deletions

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 34d4eb98829e..975d556b4787 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -170,6 +170,7 @@ static void acm_write_done(struct acm *acm, struct acm_wb *wb)
 {
         wb->use = 0;
         acm->transmitting--;
+        usb_autopm_put_interface_async(acm->control);
 }
 
 /*
@@ -211,9 +212,12 @@ static int acm_write_start(struct acm *acm, int wbn)
         }
 
         dbg("%s susp_count: %d", __func__, acm->susp_count);
+        usb_autopm_get_interface_async(acm->control);
         if (acm->susp_count) {
-                acm->delayed_wb = wb;
-                schedule_work(&acm->waker);
+                if (!acm->delayed_wb)
+                        acm->delayed_wb = wb;
+                else
+                        usb_autopm_put_interface_async(acm->control);
                 spin_unlock_irqrestore(&acm->write_lock, flags);
                 return 0;       /* A white lie */
         }
@@ -424,7 +428,6 @@ next_buffer:
                 throttled = acm->throttle;
                 spin_unlock_irqrestore(&acm->throttle_lock, flags);
                 if (!throttled) {
-                        tty_buffer_request_room(tty, buf->size);
                         tty_insert_flip_string(tty, buf->base, buf->size);
                         tty_flip_buffer_push(tty);
                 } else {
@@ -534,23 +537,6 @@ static void acm_softint(struct work_struct *work)
         tty_kref_put(tty);
 }
 
-static void acm_waker(struct work_struct *waker)
-{
-        struct acm *acm = container_of(waker, struct acm, waker);
-        int rv;
-
-        rv = usb_autopm_get_interface(acm->control);
-        if (rv < 0) {
-                dev_err(&acm->dev->dev, "Autopm failure in %s\n", __func__);
-                return;
-        }
-        if (acm->delayed_wb) {
-                acm_start_wb(acm, acm->delayed_wb);
-                acm->delayed_wb = NULL;
-        }
-        usb_autopm_put_interface(acm->control);
-}
-
 /*
  * TTY handlers
  */
@@ -566,7 +552,7 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp)
 
         acm = acm_table[tty->index];
         if (!acm || !acm->dev)
-                goto err_out;
+                goto out;
         else
                 rv = 0;
 
@@ -582,8 +568,9 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp)
 
         mutex_lock(&acm->mutex);
         if (acm->port.count++) {
+                mutex_unlock(&acm->mutex);
                 usb_autopm_put_interface(acm->control);
-                goto done;
+                goto out;
         }
 
         acm->ctrlurb->dev = acm->dev;
@@ -612,18 +599,18 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp)
         set_bit(ASYNCB_INITIALIZED, &acm->port.flags);
         rv = tty_port_block_til_ready(&acm->port, tty, filp);
         tasklet_schedule(&acm->urb_task);
-done:
+
         mutex_unlock(&acm->mutex);
-err_out:
+out:
         mutex_unlock(&open_mutex);
         return rv;
 
 full_bailout:
         usb_kill_urb(acm->ctrlurb);
 bail_out:
-        usb_autopm_put_interface(acm->control);
         acm->port.count--;
         mutex_unlock(&acm->mutex);
+        usb_autopm_put_interface(acm->control);
 early_bail:
         mutex_unlock(&open_mutex);
         tty_port_tty_set(&acm->port, NULL);
@@ -1023,7 +1010,7 @@ static int acm_probe(struct usb_interface *intf,
                 case USB_CDC_CALL_MANAGEMENT_TYPE:
                         call_management_function = buffer[3];
                         call_interface_num = buffer[4];
-                        if ((call_management_function & 3) != 3)
+                        if ( (quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
                                 dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
                         break;
                 default:
@@ -1178,7 +1165,6 @@ made_compressed_probe:
         acm->urb_task.func = acm_rx_tasklet;
         acm->urb_task.data = (unsigned long) acm;
         INIT_WORK(&acm->work, acm_softint);
-        INIT_WORK(&acm->waker, acm_waker);
         init_waitqueue_head(&acm->drain_wait);
         spin_lock_init(&acm->throttle_lock);
         spin_lock_init(&acm->write_lock);
@@ -1343,7 +1329,6 @@ static void stop_data_traffic(struct acm *acm)
         tasklet_enable(&acm->urb_task);
 
         cancel_work_sync(&acm->work);
-        cancel_work_sync(&acm->waker);
 }
 
 static void acm_disconnect(struct usb_interface *intf)
@@ -1435,6 +1420,7 @@ static int acm_suspend(struct usb_interface *intf, pm_message_t message)
 static int acm_resume(struct usb_interface *intf)
 {
         struct acm *acm = usb_get_intfdata(intf);
+        struct acm_wb *wb;
         int rv = 0;
         int cnt;
 
@@ -1449,6 +1435,21 @@ static int acm_resume(struct usb_interface *intf)
         mutex_lock(&acm->mutex);
         if (acm->port.count) {
                 rv = usb_submit_urb(acm->ctrlurb, GFP_NOIO);
+
+                spin_lock_irq(&acm->write_lock);
+                if (acm->delayed_wb) {
+                        wb = acm->delayed_wb;
+                        acm->delayed_wb = NULL;
+                        spin_unlock_irq(&acm->write_lock);
+                        acm_start_wb(acm, acm->delayed_wb);
+                } else {
+                        spin_unlock_irq(&acm->write_lock);
+                }
+
+                /*
+                 * delayed error checking because we must
+                 * do the write path at all cost
+                 */
                 if (rv < 0)
                         goto err_out;
 
@@ -1460,6 +1461,23 @@ err_out:
         return rv;
 }
 
+static int acm_reset_resume(struct usb_interface *intf)
+{
+        struct acm *acm = usb_get_intfdata(intf);
+        struct tty_struct *tty;
+
+        mutex_lock(&acm->mutex);
+        if (acm->port.count) {
+                tty = tty_port_tty_get(&acm->port);
+                if (tty) {
+                        tty_hangup(tty);
+                        tty_kref_put(tty);
+                }
+        }
+        mutex_unlock(&acm->mutex);
+        return acm_resume(intf);
+}
+
 #endif /* CONFIG_PM */
 
 #define NOKIA_PCSUITE_ACM_INFO(x) \
@@ -1471,7 +1489,7 @@ err_out:
  * USB driver structure.
  */
 
-static struct usb_device_id acm_ids[] = {
+static const struct usb_device_id acm_ids[] = {
         /* quirky and broken devices */
         { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */
         .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
@@ -1576,6 +1594,11 @@ static struct usb_device_id acm_ids[] = {
 
         /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
 
+        /* Support Lego NXT using pbLua firmware */
+        { USB_DEVICE(0x0694, 0xff00),
+        .driver_info = NOT_A_MODEM,
+        },
+
         /* control interfaces with various AT-command sets */
         { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
                 USB_CDC_ACM_PROTO_AT_V25TER) },
@@ -1602,6 +1625,7 @@ static struct usb_driver acm_driver = {
 #ifdef CONFIG_PM
         .suspend =      acm_suspend,
         .resume =       acm_resume,
+        .reset_resume = acm_reset_resume,
 #endif
         .id_table =     acm_ids,
 #ifdef CONFIG_PM
diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
index c4a0ee8ffccf..4a8e87ec6ce9 100644
--- a/drivers/usb/class/cdc-acm.h
+++ b/drivers/usb/class/cdc-acm.h
@@ -112,7 +112,6 @@ struct acm {
         struct mutex mutex;
         struct usb_cdc_line_coding line;                /* bits, stop, parity */
         struct work_struct work;                        /* work queue entry for line discipline waking up */
-        struct work_struct waker;
         wait_queue_head_t drain_wait;                   /* close processing */
         struct tasklet_struct urb_task;                 /* rx processing */
         spinlock_t throttle_lock;                       /* synchronize throtteling and read callback */
@@ -137,3 +136,4 @@ struct acm {
 #define NO_UNION_NORMAL                 1
 #define SINGLE_RX_URB                   2
 #define NO_CAP_LINE                     4
+#define NOT_A_MODEM                     8
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 3e564bfe17d1..18aafcb08fc8 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -31,7 +31,7 @@
 #define DRIVER_AUTHOR "Oliver Neukum"
 #define DRIVER_DESC "USB Abstract Control Model driver for USB WCM Device Management"
 
-static struct usb_device_id wdm_ids[] = {
+static const struct usb_device_id wdm_ids[] = {
         {
                 .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS |
                                  USB_DEVICE_ID_MATCH_INT_SUBCLASS,
diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c
index 9bc112ee7803..93b5f85d7ceb 100644
--- a/drivers/usb/class/usblp.c
+++ b/drivers/usb/class/usblp.c
@@ -163,7 +163,6 @@ struct usblp {
         unsigned char           used;                   /* True if open */
         unsigned char           present;                /* True if not disconnected */
         unsigned char           bidir;                  /* interface is bidirectional */
-        unsigned char           sleeping;               /* interface is suspended */
         unsigned char           no_paper;               /* Paper Out happened */
         unsigned char           *device_id_string;      /* IEEE 1284 DEVICE ID string (ptr) */
                                                         /* first 2 bytes are (big-endian) length */
@@ -191,7 +190,6 @@ static void usblp_dump(struct usblp *usblp) {
         dbg("quirks=%d", usblp->quirks);
         dbg("used=%d", usblp->used);
         dbg("bidir=%d", usblp->bidir);
-        dbg("sleeping=%d", usblp->sleeping);
         dbg("device_id_string=\"%s\"",
                 usblp->device_id_string ?
                         usblp->device_id_string + 2 :
@@ -376,7 +374,7 @@ static int usblp_check_status(struct usblp *usblp, int err)
 
 static int handle_bidir (struct usblp *usblp)
 {
-        if (usblp->bidir && usblp->used && !usblp->sleeping) {
+        if (usblp->bidir && usblp->used) {
                 if (usblp_submit_read(usblp) < 0)
                         return -EIO;
         }
@@ -503,11 +501,6 @@ static long usblp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                 goto done;
         }
 
-        if (usblp->sleeping) {
-                retval = -ENODEV;
-                goto done;
-        }
-
         dbg("usblp_ioctl: cmd=0x%x (%c nr=%d len=%d dir=%d)", cmd, _IOC_TYPE(cmd),
                 _IOC_NR(cmd), _IOC_SIZE(cmd), _IOC_DIR(cmd) );
 
@@ -914,8 +907,6 @@ static int usblp_wtest(struct usblp *usblp, int nonblock)
                 return 0;
         }
         spin_unlock_irqrestore(&usblp->lock, flags);
-        if (usblp->sleeping)
-                return -ENODEV;
         if (nonblock)
                 return -EAGAIN;
         return 1;
@@ -968,8 +959,6 @@ static int usblp_rtest(struct usblp *usblp, int nonblock)
                 return 0;
         }
         spin_unlock_irqrestore(&usblp->lock, flags);
-        if (usblp->sleeping)
-                return -ENODEV;
         if (nonblock)
                 return -EAGAIN;
         return 1;
@@ -1377,12 +1366,10 @@ static void usblp_disconnect(struct usb_interface *intf)
         mutex_unlock (&usblp_mutex);
 }
 
-static int usblp_suspend (struct usb_interface *intf, pm_message_t message)
+static int usblp_suspend(struct usb_interface *intf, pm_message_t message)
 {
         struct usblp *usblp = usb_get_intfdata (intf);
 
-        /* we take no more IO */
-        usblp->sleeping = 1;
         usblp_unlink_urbs(usblp);
 #if 0 /* XXX Do we want this? What if someone is reading, should we fail? */
         /* not strictly necessary, but just in case */
@@ -1393,18 +1380,17 @@ static int usblp_suspend (struct usb_interface *intf, pm_message_t message)
         return 0;
 }
 
-static int usblp_resume (struct usb_interface *intf)
+static int usblp_resume(struct usb_interface *intf)
 {
         struct usblp *usblp = usb_get_intfdata (intf);
         int r;
 
-        usblp->sleeping = 0;
         r = handle_bidir (usblp);
 
         return r;
 }
 
-static struct usb_device_id usblp_ids [] = {
+static const struct usb_device_id usblp_ids[] = {
         { USB_DEVICE_INFO(7, 1, 1) },
         { USB_DEVICE_INFO(7, 1, 2) },
         { USB_DEVICE_INFO(7, 1, 3) },
diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 7c5f4e32c920..8588c0937a89 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -48,7 +48,7 @@
  */
 #define USBTMC_MAX_READS_TO_CLEAR_BULK_IN       100
 
-static struct usb_device_id usbtmc_devices[] = {
+static const struct usb_device_id usbtmc_devices[] = {
         { USB_INTERFACE_INFO(USB_CLASS_APP_SPEC, 3, 0), },
         { USB_INTERFACE_INFO(USB_CLASS_APP_SPEC, 3, 1), },
         { 0, } /* terminating entry */