9 files changed, 27 insertions, 39 deletions

diff --git a/drivers/usb/core/buffer.c b/drivers/usb/core/buffer.c
index b7827df21f48..fc15b4acc8af 100644
--- a/drivers/usb/core/buffer.c
+++ b/drivers/usb/core/buffer.c
@@ -106,7 +106,7 @@ void hcd_buffer_destroy (struct usb_hcd *hcd)
 void *hcd_buffer_alloc (
 	struct usb_bus 		*bus,
 	size_t			size,
-	int			mem_flags,
+	unsigned		mem_flags,
 	dma_addr_t		*dma
 )
 {
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index 71b4a8d66318..fc056062c960 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -380,6 +380,7 @@ int usb_hcd_pci_resume (struct pci_dev *dev)
 		usb_hc_died (hcd);
 	}
 
+	pci_enable_device(dev);
 	return retval;
 }
 EXPORT_SYMBOL (usb_hcd_pci_resume);
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 83e732a0d64a..8616356f55e8 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1112,7 +1112,7 @@ static void urb_unlink (struct urb *urb)
  * expects usb_submit_urb() to have sanity checked and conditioned all
  * inputs in the urb
  */
-static int hcd_submit_urb (struct urb *urb, int mem_flags)
+static int hcd_submit_urb (struct urb *urb, unsigned mem_flags)
 {
 	int			status;
 	struct usb_hcd		*hcd = urb->dev->bus->hcpriv;
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h
index 8dc13cde2f73..67db4a999b93 100644
--- a/drivers/usb/core/hcd.h
+++ b/drivers/usb/core/hcd.h
@@ -142,12 +142,12 @@ struct hcd_timeout {	/* timeouts we allocate */
 
 struct usb_operations {
 	int (*get_frame_number) (struct usb_device *usb_dev);
-	int (*submit_urb) (struct urb *urb, int mem_flags);
+	int (*submit_urb) (struct urb *urb, unsigned mem_flags);
 	int (*unlink_urb) (struct urb *urb, int status);
 
 	/* allocate dma-consistent buffer for URB_DMA_NOMAPPING */
 	void *(*buffer_alloc)(struct usb_bus *bus, size_t size,
-			int mem_flags,
+			unsigned mem_flags,
 			dma_addr_t *dma);
 	void (*buffer_free)(struct usb_bus *bus, size_t size,
 			void *addr, dma_addr_t dma);
@@ -200,7 +200,7 @@ struct hc_driver {
 	int	(*urb_enqueue) (struct usb_hcd *hcd,
 					struct usb_host_endpoint *ep,
 					struct urb *urb,
-					int mem_flags);
+					unsigned mem_flags);
 	int	(*urb_dequeue) (struct usb_hcd *hcd, struct urb *urb);
 
 	/* hw synch, freeing endpoint resources that urb_dequeue can't */
@@ -247,7 +247,7 @@ int hcd_buffer_create (struct usb_hcd *hcd);
 void hcd_buffer_destroy (struct usb_hcd *hcd);
 
 void *hcd_buffer_alloc (struct usb_bus *bus, size_t size,
-	int mem_flags, dma_addr_t *dma);
+	unsigned mem_flags, dma_addr_t *dma);
 void hcd_buffer_free (struct usb_bus *bus, size_t size,
 	void *addr, dma_addr_t dma);
 
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 32ff32181852..c3e46d24a37e 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -26,6 +26,7 @@
 #include <linux/ioctl.h>
 #include <linux/usb.h>
 #include <linux/usbdevice_fs.h>
+#include <linux/kthread.h>
 
 #include <asm/semaphore.h>
 #include <asm/uaccess.h>
@@ -47,8 +48,7 @@ static LIST_HEAD(hub_event_list);	/* List of hubs needing servicing */
 /* Wakes up khubd */
 static DECLARE_WAIT_QUEUE_HEAD(khubd_wait);
 
-static pid_t khubd_pid = 0;			/* PID of khubd */
-static DECLARE_COMPLETION(khubd_exited);
+static struct task_struct *khubd_task;
 
 /* cycle leds on hubs that aren't blinking for attention */
 static int blinkenlights = 0;
@@ -2807,23 +2807,16 @@ loop:
 
 static int hub_thread(void *__unused)
 {
-	/*
-	 * This thread doesn't need any user-level access,
-	 * so get rid of all our resources
-	 */
-
-	daemonize("khubd");
-	allow_signal(SIGKILL);
-
-	/* Send me a signal to get me die (for debugging) */
 	do {
 		hub_events();
-		wait_event_interruptible(khubd_wait, !list_empty(&hub_event_list)); 
+		wait_event_interruptible(khubd_wait,
+				!list_empty(&hub_event_list) ||
+				kthread_should_stop());
 		try_to_freeze();
-	} while (!signal_pending(current));
+	} while (!kthread_should_stop() || !list_empty(&hub_event_list));
 
-	pr_debug ("%s: khubd exiting\n", usbcore_name);
-	complete_and_exit(&khubd_exited, 0);
+	pr_debug("%s: khubd exiting\n", usbcore_name);
+	return 0;
 }
 
 static struct usb_device_id hub_id_table [] = {
@@ -2849,20 +2842,15 @@ static struct usb_driver hub_driver = {
 
 int usb_hub_init(void)
 {
-	pid_t pid;
-
 	if (usb_register(&hub_driver) < 0) {
 		printk(KERN_ERR "%s: can't register hub driver\n",
 			usbcore_name);
 		return -1;
 	}
 
-	pid = kernel_thread(hub_thread, NULL, CLONE_KERNEL);
-	if (pid >= 0) {
-		khubd_pid = pid;
-
+	khubd_task = kthread_run(hub_thread, NULL, "khubd");
+	if (!IS_ERR(khubd_task))
 		return 0;
-	}
 
 	/* Fall through if kernel_thread failed */
 	usb_deregister(&hub_driver);
@@ -2873,12 +2861,7 @@ int usb_hub_init(void)
 
 void usb_hub_cleanup(void)
 {
-	int ret;
-
-	/* Kill the thread */
-	ret = kill_proc(khubd_pid, SIGKILL, 1);
-
-	wait_for_completion(&khubd_exited);
+	kthread_stop(khubd_task);
 
 	/*
 	 * Hub resources are freed for us by usb_deregister. It calls
@@ -2890,7 +2873,6 @@ void usb_hub_cleanup(void)
 	usb_deregister(&hub_driver);
 } /* usb_hub_cleanup() */
 
-
 static int config_descriptors_changed(struct usb_device *udev)
 {
 	unsigned			index;
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index f50aaf25c98e..a428ef479bd7 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -320,7 +320,7 @@ int usb_sg_init (
 	struct scatterlist	*sg,
 	int			nents,
 	size_t			length,
-	int			mem_flags
+	unsigned		mem_flags
 )
 {
 	int			i;
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index 740cb4c668df..00297f113849 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -196,6 +196,7 @@ usb_descriptor_attr (bDeviceClass, "%02x\n")
 usb_descriptor_attr (bDeviceSubClass, "%02x\n")
 usb_descriptor_attr (bDeviceProtocol, "%02x\n")
 usb_descriptor_attr (bNumConfigurations, "%d\n")
+usb_descriptor_attr (bMaxPacketSize0, "%d\n")
 
 static struct attribute *dev_attrs[] = {
 	/* current configuration's attributes */
@@ -211,6 +212,7 @@ static struct attribute *dev_attrs[] = {
 	&dev_attr_bDeviceSubClass.attr,
 	&dev_attr_bDeviceProtocol.attr,
 	&dev_attr_bNumConfigurations.attr,
+	&dev_attr_bMaxPacketSize0.attr,
 	&dev_attr_speed.attr,
 	&dev_attr_devnum.attr,
 	&dev_attr_version.attr,
diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index 0faf18d511de..c0feee25ff0a 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -60,7 +60,7 @@ void usb_init_urb(struct urb *urb)
  *
  * The driver must call usb_free_urb() when it is finished with the urb.
  */
-struct urb *usb_alloc_urb(int iso_packets, int mem_flags)
+struct urb *usb_alloc_urb(int iso_packets, unsigned mem_flags)
 {
 	struct urb *urb;
 
@@ -224,7 +224,7 @@ struct urb * usb_get_urb(struct urb *urb)
  *      GFP_NOIO, unless b) or c) apply
  *
  */
-int usb_submit_urb(struct urb *urb, int mem_flags)
+int usb_submit_urb(struct urb *urb, unsigned mem_flags)
 {
 	int			pipe, temp, max;
 	struct usb_device	*dev;
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index a3c42203213a..99c85d2f92da 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -1129,7 +1129,7 @@ int __usb_get_extra_descriptor(char *buffer, unsigned size,
 void *usb_buffer_alloc (
 	struct usb_device *dev,
 	size_t size,
-	int mem_flags,
+	unsigned mem_flags,
 	dma_addr_t *dma
 )
 {
@@ -1532,6 +1532,9 @@ EXPORT_SYMBOL(usb_register);
 EXPORT_SYMBOL(usb_deregister);
 EXPORT_SYMBOL(usb_disabled);
 
+EXPORT_SYMBOL_GPL(usb_get_intf);
+EXPORT_SYMBOL_GPL(usb_put_intf);
+
 EXPORT_SYMBOL(usb_alloc_dev);
 EXPORT_SYMBOL(usb_put_dev);
 EXPORT_SYMBOL(usb_get_dev);