7 files changed, 64 insertions, 4 deletions

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index f3b99e1c1042..ba3b8a98a049 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -58,8 +58,10 @@ struct iommu_domain {
 #define IOMMU_CAP_INTR_REMAP            0x2     /* isolates device intrs */
 
 enum iommu_attr {
-        DOMAIN_ATTR_MAX,
         DOMAIN_ATTR_GEOMETRY,
+        DOMAIN_ATTR_PAGING,
+        DOMAIN_ATTR_WINDOWS,
+        DOMAIN_ATTR_MAX,
 };
 
 #ifdef CONFIG_IOMMU_API
@@ -100,6 +102,16 @@ struct iommu_ops {
                                enum iommu_attr attr, void *data);
         int (*domain_set_attr)(struct iommu_domain *domain,
                                enum iommu_attr attr, void *data);
+
+        /* Window handling functions */
+        int (*domain_window_enable)(struct iommu_domain *domain, u32 wnd_nr,
+                                    phys_addr_t paddr, u64 size);
+        void (*domain_window_disable)(struct iommu_domain *domain, u32 wnd_nr);
+        /* Set the numer of window per domain */
+        int (*domain_set_windows)(struct iommu_domain *domain, u32 w_count);
+        /* Get the numer of window per domain */
+        u32 (*domain_get_windows)(struct iommu_domain *domain);
+
         unsigned long pgsize_bitmap;
 };
 
@@ -157,6 +169,10 @@ extern int iommu_domain_get_attr(struct iommu_domain *domain, enum iommu_attr,
 extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr,
                                  void *data);
 
+/* Window handling function prototypes */
+extern int iommu_domain_window_enable(struct iommu_domain *domain, u32 wnd_nr,
+                                      phys_addr_t offset, u64 size);
+extern void iommu_domain_window_disable(struct iommu_domain *domain, u32 wnd_nr);
 /**
  * report_iommu_fault() - report about an IOMMU fault to the IOMMU framework
  * @domain: the iommu domain where the fault has happened
@@ -239,6 +255,18 @@ static inline int iommu_unmap(struct iommu_domain *domain, unsigned long iova,
         return -ENODEV;
 }
 
+static inline int iommu_domain_window_enable(struct iommu_domain *domain,
+                                             u32 wnd_nr, phys_addr_t paddr,
+                                             u64 size)
+{
+        return -ENODEV;
+}
+
+static inline void iommu_domain_window_disable(struct iommu_domain *domain,
+                                               u32 wnd_nr)
+{
+}
+
 static inline phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain,
                                              unsigned long iova)
 {
diff --git a/include/linux/llist.h b/include/linux/llist.h
index a5199f6d0e82..d0ab98f73d38 100644
--- a/include/linux/llist.h
+++ b/include/linux/llist.h
@@ -125,6 +125,31 @@ static inline void init_llist_head(struct llist_head *list)
              (pos) = llist_entry((pos)->member.next, typeof(*(pos)), member))
 
 /**
+ * llist_for_each_entry_safe - iterate safely against remove over some entries
+ * of lock-less list of given type.
+ * @pos:        the type * to use as a loop cursor.
+ * @n:          another type * to use as a temporary storage.
+ * @node:       the fist entry of deleted list entries.
+ * @member:     the name of the llist_node with the struct.
+ *
+ * In general, some entries of the lock-less list can be traversed
+ * safely only after being removed from list, so start with an entry
+ * instead of list head. This variant allows removal of entries
+ * as we iterate.
+ *
+ * If being used on entries deleted from lock-less list directly, the
+ * traverse order is from the newest to the oldest added entry.  If
+ * you want to traverse from the oldest to the newest, you must
+ * reverse the order by yourself before traversing.
+ */
+#define llist_for_each_entry_safe(pos, n, node, member)         \
+        for ((pos) = llist_entry((node), typeof(*(pos)), member),       \
+             (n) = (pos)->member.next;                                  \
+             &(pos)->member != NULL;                                    \
+             (pos) = llist_entry(n, typeof(*(pos)), member),            \
+             (n) = (&(pos)->member != NULL) ? (pos)->member.next : NULL)
+
+/**
  * llist_empty - tests whether a lock-less list is empty
  * @head:       the list to test
  *
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 0108a56f814e..28bd5fa2ff2e 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -429,7 +429,7 @@ extern int memcg_limited_groups_array_size;
  * the slab_mutex must be held when looping through those caches
  */
 #define for_each_memcg_cache_index(_idx)        \
-        for ((_idx) = 0; i < memcg_limited_groups_array_size; (_idx)++)
+        for ((_idx) = 0; (_idx) < memcg_limited_groups_array_size; (_idx)++)
 
 static inline bool memcg_kmem_enabled(void)
 {
diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h
index bc823c4c028b..deca87452528 100644
--- a/include/linux/mmu_notifier.h
+++ b/include/linux/mmu_notifier.h
@@ -151,7 +151,7 @@ struct mmu_notifier_ops {
  * Therefore notifier chains can only be traversed when either
  *
  * 1. mmap_sem is held.
- * 2. One of the reverse map locks is held (i_mmap_mutex or anon_vma->mutex).
+ * 2. One of the reverse map locks is held (i_mmap_mutex or anon_vma->rwsem).
  * 3. No other concurrent thread can access the list (release)
  */
 struct mmu_notifier {
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 689b14b26c8d..4d22d0f6167a 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -357,6 +357,8 @@ struct usb_bus {
         int bandwidth_int_reqs;         /* number of Interrupt requests */
         int bandwidth_isoc_reqs;        /* number of Isoc. requests */
 
+        unsigned resuming_ports;        /* bit array: resuming root-hub ports */
+
 #if defined(CONFIG_USB_MON) || defined(CONFIG_USB_MON_MODULE)
         struct mon_bus *mon_bus;        /* non-null when associated */
         int monitored;                  /* non-zero when monitored */
diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
index 608050b2545f..0a78df5f6cfd 100644
--- a/include/linux/usb/hcd.h
+++ b/include/linux/usb/hcd.h
@@ -430,6 +430,9 @@ extern void usb_hcd_poll_rh_status(struct usb_hcd *hcd);
 extern void usb_wakeup_notification(struct usb_device *hdev,
                 unsigned int portnum);
 
+extern void usb_hcd_start_port_resume(struct usb_bus *bus, int portnum);
+extern void usb_hcd_end_port_resume(struct usb_bus *bus, int portnum);
+
 /* The D0/D1 toggle bits ... USE WITH CAUTION (they're almost hcd-internal) */
 #define usb_gettoggle(dev, ep, out) (((dev)->toggle[out] >> (ep)) & 1)
 #define usb_dotoggle(dev, ep, out)  ((dev)->toggle[out] ^= (1 << (ep)))
diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h
index 5de7a220e986..0e5ac93bab10 100644
--- a/include/linux/usb/usbnet.h
+++ b/include/linux/usb/usbnet.h
@@ -33,6 +33,7 @@ struct usbnet {
         wait_queue_head_t       *wait;
         struct mutex            phy_mutex;
         unsigned char           suspend_count;
+        unsigned char           pkt_cnt, pkt_err;
 
         /* i/o info: pipes etc */
         unsigned                in, out;
@@ -70,6 +71,7 @@ struct usbnet {
 #               define EVENT_DEV_OPEN   7
 #               define EVENT_DEVICE_REPORT_IDLE 8
 #               define EVENT_NO_RUNTIME_PM      9
+#               define EVENT_RX_KILL    10
 };
 
 static inline struct usb_driver *driver_of(struct usb_interface *intf)
@@ -100,7 +102,6 @@ struct driver_info {
 #define FLAG_LINK_INTR  0x0800          /* updates link (carrier) status */
 
 #define FLAG_POINTTOPOINT 0x1000        /* possibly use "usb%d" names */
-#define FLAG_NOARP      0x2000          /* device can't do ARP */
 
 /*
  * Indicates to usbnet, that USB driver accumulates multiple IP packets.
@@ -108,6 +109,7 @@ struct driver_info {
  */
 #define FLAG_MULTI_PACKET       0x2000
 #define FLAG_RX_ASSEMBLE        0x4000  /* rx packets may span >1 frames */
+#define FLAG_NOARP              0x8000  /* device can't do ARP */
 
         /* init device ... can sleep, or cause probe() failure */
         int     (*bind)(struct usbnet *, struct usb_interface *);