Merge branch 'linus' into core/softlockup

Conflicts:
	kernel/sysctl.c

11 files changed, 82 insertions, 79 deletions

diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
index 6ec38175a817..73c108d117b4 100644
--- a/drivers/usb/core/devices.c
+++ b/drivers/usb/core/devices.c
@@ -187,7 +187,7 @@ static char *usb_dump_endpoint_descriptor(int speed, char *start, char *end,
         }
 
         /* this isn't checking for illegal values */
-        switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
+        switch (usb_endpoint_type(desc)) {
         case USB_ENDPOINT_XFER_CONTROL:
                 type = "Ctrl";
                 if (speed == USB_SPEED_HIGH)    /* uframes per NAK */
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 7513bb083c15..df3c539f652a 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -104,7 +104,7 @@ MODULE_PARM_DESC(usbfs_snoop, "true to log all usbfs traffic");
 
 #define MAX_USBFS_BUFFER_SIZE   16384
 
-static inline int connected(struct dev_state *ps)
+static int connected(struct dev_state *ps)
 {
         return (!list_empty(&ps->list) &&
                         ps->dev->state != USB_STATE_NOTATTACHED);
@@ -248,7 +248,7 @@ static void free_async(struct async *as)
         kfree(as);
 }
 
-static inline void async_newpending(struct async *as)
+static void async_newpending(struct async *as)
 {
         struct dev_state *ps = as->ps;
         unsigned long flags;
@@ -258,7 +258,7 @@ static inline void async_newpending(struct async *as)
         spin_unlock_irqrestore(&ps->lock, flags);
 }
 
-static inline void async_removepending(struct async *as)
+static void async_removepending(struct async *as)
 {
         struct dev_state *ps = as->ps;
         unsigned long flags;
@@ -268,7 +268,7 @@ static inline void async_removepending(struct async *as)
         spin_unlock_irqrestore(&ps->lock, flags);
 }
 
-static inline struct async *async_getcompleted(struct dev_state *ps)
+static struct async *async_getcompleted(struct dev_state *ps)
 {
         unsigned long flags;
         struct async *as = NULL;
@@ -283,7 +283,7 @@ static inline struct async *async_getcompleted(struct dev_state *ps)
         return as;
 }
 
-static inline struct async *async_getpending(struct dev_state *ps,
+static struct async *async_getpending(struct dev_state *ps,
                                              void __user *userurb)
 {
         unsigned long flags;
@@ -302,7 +302,7 @@ static inline struct async *async_getpending(struct dev_state *ps,
 
 static void snoop_urb(struct urb *urb, void __user *userurb)
 {
-        int j;
+        unsigned j;
         unsigned char *data = urb->transfer_buffer;
 
         if (!usbfs_snoop)
@@ -311,9 +311,9 @@ static void snoop_urb(struct urb *urb, void __user *userurb)
         dev_info(&urb->dev->dev, "direction=%s\n",
                         usb_urb_dir_in(urb) ? "IN" : "OUT");
         dev_info(&urb->dev->dev, "userurb=%p\n", userurb);
-        dev_info(&urb->dev->dev, "transfer_buffer_length=%d\n",
+        dev_info(&urb->dev->dev, "transfer_buffer_length=%u\n",
                  urb->transfer_buffer_length);
-        dev_info(&urb->dev->dev, "actual_length=%d\n", urb->actual_length);
+        dev_info(&urb->dev->dev, "actual_length=%u\n", urb->actual_length);
         dev_info(&urb->dev->dev, "data: ");
         for (j = 0; j < urb->transfer_buffer_length; ++j)
                 printk("%02x ", data[j]);
@@ -359,11 +359,6 @@ static void destroy_async(struct dev_state *ps, struct list_head *list)
                 spin_lock_irqsave(&ps->lock, flags);
         }
         spin_unlock_irqrestore(&ps->lock, flags);
-        as = async_getcompleted(ps);
-        while (as) {
-                free_async(as);
-                as = async_getcompleted(ps);
-        }
 }
 
 static void destroy_async_on_interface(struct dev_state *ps,
@@ -381,7 +376,7 @@ static void destroy_async_on_interface(struct dev_state *ps,
         destroy_async(ps, &hitlist);
 }
 
-static inline void destroy_all_async(struct dev_state *ps)
+static void destroy_all_async(struct dev_state *ps)
 {
         destroy_async(ps, &ps->async_pending);
 }
@@ -530,7 +525,8 @@ static int check_ctrlrecip(struct dev_state *ps, unsigned int requesttype,
 {
         int ret = 0;
 
-        if (ps->dev->state != USB_STATE_ADDRESS
+        if (ps->dev->state != USB_STATE_UNAUTHENTICATED
+         && ps->dev->state != USB_STATE_ADDRESS
          && ps->dev->state != USB_STATE_CONFIGURED)
                 return -EHOSTUNREACH;
         if (USB_TYPE_VENDOR == (USB_TYPE_MASK & requesttype))
@@ -643,6 +639,7 @@ static int usbdev_release(struct inode *inode, struct file *file)
         struct dev_state *ps = file->private_data;
         struct usb_device *dev = ps->dev;
         unsigned int ifnum;
+        struct async *as;
 
         usb_lock_device(dev);
 
@@ -661,6 +658,12 @@ static int usbdev_release(struct inode *inode, struct file *file)
         usb_unlock_device(dev);
         usb_put_dev(dev);
         put_pid(ps->disc_pid);
+
+        as = async_getcompleted(ps);
+        while (as) {
+                free_async(as);
+                as = async_getcompleted(ps);
+        }
         kfree(ps);
         return 0;
 }
diff --git a/drivers/usb/core/endpoint.c b/drivers/usb/core/endpoint.c
index e1710f260b4f..40dee2ac0133 100644
--- a/drivers/usb/core/endpoint.c
+++ b/drivers/usb/core/endpoint.c
@@ -66,7 +66,7 @@ static ssize_t show_ep_type(struct device *dev, struct device_attribute *attr,
         struct ep_device *ep = to_ep_device(dev);
         char *type = "unknown";
 
-        switch (ep->desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
+        switch (usb_endpoint_type(ep->desc)) {
         case USB_ENDPOINT_XFER_CONTROL:
                 type = "Control";
                 break;
@@ -94,7 +94,7 @@ static ssize_t show_ep_interval(struct device *dev,
 
         in = (ep->desc->bEndpointAddress & USB_DIR_IN);
 
-        switch (ep->desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
+        switch (usb_endpoint_type(ep->desc)) {
         case USB_ENDPOINT_XFER_CONTROL:
                 if (ep->udev->speed == USB_SPEED_HIGH)  /* uframes per NAK */
                         interval = ep->desc->bInterval;
@@ -131,10 +131,9 @@ static ssize_t show_ep_direction(struct device *dev,
         struct ep_device *ep = to_ep_device(dev);
         char *direction;
 
-        if ((ep->desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
-                        USB_ENDPOINT_XFER_CONTROL)
+        if (usb_endpoint_xfer_control(ep->desc))
                 direction = "both";
-        else if (ep->desc->bEndpointAddress & USB_DIR_IN)
+        else if (usb_endpoint_dir_in(ep->desc))
                 direction = "in";
         else
                 direction = "out";
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index c54fc40458b1..a4301dc02d27 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -298,19 +298,6 @@ int usb_hcd_pci_suspend(struct pci_dev *dev, pm_message_t message)
 EXPORT_SYMBOL_GPL(usb_hcd_pci_suspend);
 
 /**
- * usb_hcd_pci_resume_early - resume a PCI-based HCD before IRQs are enabled
- * @dev: USB Host Controller being resumed
- *
- * Store this function in the HCD's struct pci_driver as .resume_early.
- */
-int usb_hcd_pci_resume_early(struct pci_dev *dev)
-{
-        pci_restore_state(dev);
-        return 0;
-}
-EXPORT_SYMBOL_GPL(usb_hcd_pci_resume_early);
-
-/**
  * usb_hcd_pci_resume - power management resume of a PCI-based HCD
  * @dev: USB Host Controller being resumed
  *
@@ -333,6 +320,8 @@ int usb_hcd_pci_resume(struct pci_dev *dev)
         }
 #endif
 
+        pci_restore_state(dev);
+
         hcd = pci_get_drvdata(dev);
         if (hcd->state != HC_STATE_SUSPENDED) {
                 dev_dbg(hcd->self.controller,
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 3c711db55d86..81fa8506825d 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -279,9 +279,9 @@ static const u8 hs_rh_config_descriptor [] = {
  * helper routine for returning string descriptors in UTF-16LE
  * input can actually be ISO-8859-1; ASCII is its 7-bit subset
  */
-static int ascii2utf (char *s, u8 *utf, int utfmax)
+static unsigned ascii2utf(char *s, u8 *utf, int utfmax)
 {
-        int retval;
+        unsigned retval;
 
         for (retval = 0; *s && utfmax > 1; utfmax -= 2, retval += 2) {
                 *utf++ = *s++;
@@ -304,19 +304,15 @@ static int ascii2utf (char *s, u8 *utf, int utfmax)
  * Produces either a manufacturer, product or serial number string for the
  * virtual root hub device.
  */
-static int rh_string (
-        int             id,
-        struct usb_hcd  *hcd,
-        u8              *data,
-        int             len
-) {
+static unsigned rh_string(int id, struct usb_hcd *hcd, u8 *data, unsigned len)
+{
         char buf [100];
 
         // language ids
         if (id == 0) {
                 buf[0] = 4;    buf[1] = 3;      /* 4 bytes string data */
                 buf[2] = 0x09; buf[3] = 0x04;   /* MSFT-speak for "en-us" */
-                len = min (len, 4);
+                len = min_t(unsigned, len, 4);
                 memcpy (data, buf, len);
                 return len;
 
@@ -332,10 +328,7 @@ static int rh_string (
         } else if (id == 3) {
                 snprintf (buf, sizeof buf, "%s %s %s", init_utsname()->sysname,
                         init_utsname()->release, hcd->driver->description);
-
-        // unsupported IDs --> "protocol stall"
-        } else
-                return -EPIPE;
+        }
 
         switch (len) {          /* All cases fall through */
         default:
@@ -360,9 +353,8 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
         u8              tbuf [sizeof (struct usb_hub_descriptor)]
                 __attribute__((aligned(4)));
         const u8        *bufp = tbuf;
-        int             len = 0;
+        unsigned        len = 0;
         int             status;
-        int             n;
         u8              patch_wakeup = 0;
         u8              patch_protocol = 0;
 
@@ -456,10 +448,11 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb)
                                 patch_wakeup = 1;
                         break;
                 case USB_DT_STRING << 8:
-                        n = rh_string (wValue & 0xff, hcd, ubuf, wLength);
-                        if (n < 0)
+                        if ((wValue & 0xff) < 4)
+                                urb->actual_length = rh_string(wValue & 0xff,
+                                                hcd, ubuf, wLength);
+                        else /* unsupported IDs --> "protocol stall" */
                                 goto error;
-                        urb->actual_length = n;
                         break;
                 default:
                         goto error;
@@ -629,7 +622,7 @@ static int rh_queue_status (struct usb_hcd *hcd, struct urb *urb)
 {
         int             retval;
         unsigned long   flags;
-        int             len = 1 + (urb->dev->maxchild / 8);
+        unsigned        len = 1 + (urb->dev->maxchild / 8);
 
         spin_lock_irqsave (&hcd_root_hub_lock, flags);
         if (hcd->status_urb || urb->transfer_buffer_length < len) {
@@ -901,7 +894,7 @@ static int register_root_hub(struct usb_hcd *hcd)
 
         mutex_lock(&usb_bus_list_lock);
 
-        usb_dev->ep0.desc.wMaxPacketSize = __constant_cpu_to_le16(64);
+        usb_dev->ep0.desc.wMaxPacketSize = cpu_to_le16(64);
         retval = usb_get_device_descriptor(usb_dev, USB_DT_DEVICE_SIZE);
         if (retval != sizeof usb_dev->descriptor) {
                 mutex_unlock(&usb_bus_list_lock);
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h
index 5b94a56bec23..f750eb1ab595 100644
--- a/drivers/usb/core/hcd.h
+++ b/drivers/usb/core/hcd.h
@@ -257,7 +257,6 @@ extern void usb_hcd_pci_remove(struct pci_dev *dev);
 
 #ifdef CONFIG_PM
 extern int usb_hcd_pci_suspend(struct pci_dev *dev, pm_message_t msg);
-extern int usb_hcd_pci_resume_early(struct pci_dev *dev);
 extern int usb_hcd_pci_resume(struct pci_dev *dev);
 #endif /* CONFIG_PM */
 
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index cd50d86029e7..be86ae3f4088 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -392,7 +392,7 @@ static void hub_irq(struct urb *urb)
 {
         struct usb_hub *hub = urb->context;
         int status = urb->status;
-        int i;
+        unsigned i;
         unsigned long bits;
 
         switch (status) {
@@ -1305,6 +1305,7 @@ void usb_set_device_state(struct usb_device *udev,
                 recursively_mark_NOTATTACHED(udev);
         spin_unlock_irqrestore(&device_state_lock, flags);
 }
+EXPORT_SYMBOL_GPL(usb_set_device_state);
 
 /*
  * WUSB devices are simple: they have no hubs behind, so the mapping
@@ -2471,20 +2472,20 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
          */
         switch (udev->speed) {
         case USB_SPEED_VARIABLE:        /* fixed at 512 */
-                udev->ep0.desc.wMaxPacketSize = __constant_cpu_to_le16(512);
+                udev->ep0.desc.wMaxPacketSize = cpu_to_le16(512);
                 break;
         case USB_SPEED_HIGH:            /* fixed at 64 */
-                udev->ep0.desc.wMaxPacketSize = __constant_cpu_to_le16(64);
+                udev->ep0.desc.wMaxPacketSize = cpu_to_le16(64);
                 break;
         case USB_SPEED_FULL:            /* 8, 16, 32, or 64 */
                 /* to determine the ep0 maxpacket size, try to read
                  * the device descriptor to get bMaxPacketSize0 and
                  * then correct our initial guess.
                  */
-                udev->ep0.desc.wMaxPacketSize = __constant_cpu_to_le16(64);
+                udev->ep0.desc.wMaxPacketSize = cpu_to_le16(64);
                 break;
         case USB_SPEED_LOW:             /* fixed at 8 */
-                udev->ep0.desc.wMaxPacketSize = __constant_cpu_to_le16(8);
+                udev->ep0.desc.wMaxPacketSize = cpu_to_le16(8);
                 break;
         default:
                 goto fail;
@@ -3392,10 +3393,10 @@ static int usb_reset_and_verify_device(struct usb_device *udev)
                 udev->descriptor = descriptor;  /* for disconnect() calls */
                 goto re_enumerate;
         }
-  
+
+        /* Restore the device's previous configuration */
         if (!udev->actconfig)
                 goto done;
-
         ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
                         USB_REQ_SET_CONFIGURATION, 0,
                         udev->actconfig->desc.bConfigurationValue, 0,
@@ -3408,16 +3409,25 @@ static int usb_reset_and_verify_device(struct usb_device *udev)
         }
         usb_set_device_state(udev, USB_STATE_CONFIGURED);
 
+        /* Put interfaces back into the same altsettings as before.
+         * Don't bother to send the Set-Interface request for interfaces
+         * that were already in altsetting 0; besides being unnecessary,
+         * many devices can't handle it.  Instead just reset the host-side
+         * endpoint state.
+         */
         for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) {
                 struct usb_interface *intf = udev->actconfig->interface[i];
                 struct usb_interface_descriptor *desc;
 
-                /* set_interface resets host side toggle even
-                 * for altsetting zero.  the interface may have no driver.
-                 */
                 desc = &intf->cur_altsetting->desc;
-                ret = usb_set_interface(udev, desc->bInterfaceNumber,
-                        desc->bAlternateSetting);
+                if (desc->bAlternateSetting == 0) {
+                        usb_disable_interface(udev, intf, true);
+                        usb_enable_interface(udev, intf, true);
+                        ret = 0;
+                } else {
+                        ret = usb_set_interface(udev, desc->bInterfaceNumber,
+                                        desc->bAlternateSetting);
+                }
                 if (ret < 0) {
                         dev_err(&udev->dev, "failed to restore interface %d "
                                 "altsetting %d (error=%d)\n",
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 31fb204f44c6..30a0690f3683 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -59,7 +59,7 @@ static int usb_start_wait_urb(struct urb *urb, int timeout, int *actual_length)
                 retval = (ctx.status == -ENOENT ? -ETIMEDOUT : ctx.status);
 
                 dev_dbg(&urb->dev->dev,
-                        "%s timed out on ep%d%s len=%d/%d\n",
+                        "%s timed out on ep%d%s len=%u/%u\n",
                         current->comm,
                         usb_endpoint_num(&urb->ep->desc),
                         usb_urb_dir_in(urb) ? "in" : "out",
@@ -653,7 +653,7 @@ int usb_get_descriptor(struct usb_device *dev, unsigned char type,
                 if (result <= 0 && result != -ETIMEDOUT)
                         continue;
                 if (result > 1 && ((u8 *)buf)[1] != type) {
-                        result = -EPROTO;
+                        result = -ENODATA;
                         continue;
                 }
                 break;
@@ -696,8 +696,13 @@ static int usb_get_string(struct usb_device *dev, unsigned short langid,
                         USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
                         (USB_DT_STRING << 8) + index, langid, buf, size,
                         USB_CTRL_GET_TIMEOUT);
-                if (!(result == 0 || result == -EPIPE))
-                        break;
+                if (result == 0 || result == -EPIPE)
+                        continue;
+                if (result > 1 && ((u8 *) buf)[1] != USB_DT_STRING) {
+                        result = -ENODATA;
+                        continue;
+                }
+                break;
         }
         return result;
 }
@@ -799,18 +804,16 @@ int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
                         dev_err(&dev->dev,
                                 "string descriptor 0 read error: %d\n",
                                 err);
-                        goto errout;
                 } else if (err < 4) {
                         dev_err(&dev->dev, "string descriptor 0 too short\n");
-                        err = -EINVAL;
-                        goto errout;
                 } else {
-                        dev->have_langid = 1;
                         dev->string_langid = tbuf[2] | (tbuf[3] << 8);
                         /* always use the first langid listed */
                         dev_dbg(&dev->dev, "default language 0x%04x\n",
                                 dev->string_langid);
                 }
+
+                dev->have_langid = 1;
         }
 
         err = usb_string_sub(dev, dev->string_langid, index, tbuf);
@@ -1714,7 +1717,8 @@ free_interfaces:
         }
         kfree(new_interfaces);
 
-        if (cp->string == NULL)
+        if (cp->string == NULL &&
+                        !(dev->quirks & USB_QUIRK_CONFIG_INTF_STRINGS))
                 cp->string = usb_cache_string(dev, cp->desc.iConfiguration);
 
         /* Now that all the interfaces are set up, register them
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index c070b34b669d..ab93918d9207 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -54,6 +54,10 @@ static const struct usb_device_id usb_quirk_list[] = {
         { USB_DEVICE(0x0638, 0x0a13), .driver_info =
           USB_QUIRK_STRING_FETCH_255 },
 
+        /* Saitek Cyborg Gold Joystick */
+        { USB_DEVICE(0x06a3, 0x0006), .driver_info =
+                        USB_QUIRK_CONFIG_INTF_STRINGS },
+
         /* M-Systems Flash Disk Pioneers */
         { USB_DEVICE(0x08ec, 0x1000), .driver_info = USB_QUIRK_RESET_RESUME },
 
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index 4cc2456ef3be..c66789197927 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -13,6 +13,7 @@
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/usb.h>
+#include <linux/usb/quirks.h>
 #include "usb.h"
 
 /* Active configuration fields */
@@ -813,7 +814,8 @@ int usb_create_sysfs_intf_files(struct usb_interface *intf)
         if (intf->sysfs_files_created || intf->unregistering)
                 return 0;
 
-        if (alt->string == NULL)
+        if (alt->string == NULL &&
+                        !(udev->quirks & USB_QUIRK_CONFIG_INTF_STRINGS))
                 alt->string = usb_cache_string(udev, alt->desc.iInterface);
         if (alt->string)
                 retval = device_create_file(&intf->dev, &dev_attr_interface);
diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index 58bc5e3c2560..3376055f36e7 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -295,7 +295,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
         if (!urb || urb->hcpriv || !urb->complete)
                 return -EINVAL;
         dev = urb->dev;
-        if ((!dev) || (dev->state < USB_STATE_DEFAULT))
+        if ((!dev) || (dev->state < USB_STATE_UNAUTHENTICATED))
                 return -ENODEV;
 
         /* For now, get the endpoint from the pipe.  Eventually drivers
@@ -370,7 +370,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
         }
 
         /* the I/O buffer must be mapped/unmapped, except when length=0 */
-        if (urb->transfer_buffer_length < 0)
+        if (urb->transfer_buffer_length > INT_MAX)
                 return -EMSGSIZE;
 
 #ifdef DEBUG