Merge commit 'v2.6.38-rc3' into perf/core

Merge reason: Pick up latest fixes.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

26 files changed, 116 insertions, 70 deletions

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index eb176bb1b15b..a2e910e01293 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -306,9 +306,6 @@ extern acpi_status acpi_pci_osc_control_set(acpi_handle handle,
                                              u32 *mask, u32 req);
 extern void acpi_early_init(void);
 
-int acpi_os_map_generic_address(struct acpi_generic_address *addr);
-void acpi_os_unmap_generic_address(struct acpi_generic_address *addr);
-
 #else   /* !CONFIG_ACPI */
 
 #define acpi_disabled 1
diff --git a/include/linux/acpi_io.h b/include/linux/acpi_io.h
new file mode 100644
index 000000000000..7180013a4a3a
--- /dev/null
+++ b/include/linux/acpi_io.h
@@ -0,0 +1,16 @@
+#ifndef _ACPI_IO_H_
+#define _ACPI_IO_H_
+
+#include <linux/io.h>
+#include <acpi/acpi.h>
+
+static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys,
+                                            acpi_size size)
+{
+       return ioremap_cache(phys, size);
+}
+
+int acpi_os_map_generic_address(struct acpi_generic_address *addr);
+void acpi_os_unmap_generic_address(struct acpi_generic_address *addr);
+
+#endif
diff --git a/include/linux/console.h b/include/linux/console.h
index 9774fe6a1a97..7453cfd593c8 100644
--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -139,9 +139,9 @@ extern int update_console_cmdline(char *name, int idx, char *name_new, int idx_n
 extern void register_console(struct console *);
 extern int unregister_console(struct console *);
 extern struct console *console_drivers;
-extern void acquire_console_sem(void);
-extern int try_acquire_console_sem(void);
-extern void release_console_sem(void);
+extern void console_lock(void);
+extern int console_trylock(void);
+extern void console_unlock(void);
 extern void console_conditional_schedule(void);
 extern void console_unblank(void);
 extern struct tty_driver *console_device(int *);
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index a3b148a91874..0b84c61607e8 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -249,7 +249,7 @@ static inline enum zone_type gfp_zone(gfp_t flags)
                                          ((1 << ZONES_SHIFT) - 1);
 
         if (__builtin_constant_p(bit))
-                MAYBE_BUILD_BUG_ON((GFP_ZONE_BAD >> bit) & 1);
+                BUILD_BUG_ON((GFP_ZONE_BAD >> bit) & 1);
         else {
 #ifdef CONFIG_DEBUG_VM
                 BUG_ON((GFP_ZONE_BAD >> bit) & 1);
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 6042228954a7..294169e31364 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -959,7 +959,7 @@ struct ieee80211_ht_info {
 /* block-ack parameters */
 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
-#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
+#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
 
diff --git a/include/linux/input/bu21013.h b/include/linux/input/bu21013.h
index e470d387dd49..05e03284b92a 100644
--- a/include/linux/input/bu21013.h
+++ b/include/linux/input/bu21013.h
@@ -12,8 +12,6 @@
  * @cs_en:      pointer to the cs enable function
  * @cs_dis:     pointer to the cs disable function
  * @irq_read_val:    pointer to read the pen irq value function
- * @x_max_res: xmax resolution
- * @y_max_res: ymax resolution
  * @touch_x_max: touch x max
  * @touch_y_max: touch y max
  * @cs_pin: chip select pin
@@ -29,8 +27,6 @@ struct bu21013_platform_device {
         int (*cs_en)(int reset_pin);
         int (*cs_dis)(int reset_pin);
         int (*irq_read_val)(void);
-        int x_max_res;
-        int y_max_res;
         int touch_x_max;
         int touch_y_max;
         unsigned int cs_pin;
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index 6a64c6fa81af..c1a95b7b58de 100644
--- a/include/linux/irqdesc.h
+++ b/include/linux/irqdesc.h
@@ -101,13 +101,6 @@ static inline struct irq_desc *move_irq_desc(struct irq_desc *desc, int node)
 #define get_irq_desc_msi(desc)          ((desc)->irq_data.msi_desc)
 
 /*
- * Monolithic do_IRQ implementation.
- */
-#ifndef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ
-extern unsigned int __do_IRQ(unsigned int irq);
-#endif
-
-/*
  * Architectures call this to let the generic IRQ layer
  * handle an interrupt. If the descriptor is attached to an
  * irqchip-style controller then we call the ->handle_irq() handler,
@@ -115,14 +108,7 @@ extern unsigned int __do_IRQ(unsigned int irq);
  */
 static inline void generic_handle_irq_desc(unsigned int irq, struct irq_desc *desc)
 {
-#ifdef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ
         desc->handle_irq(irq, desc);
-#else
-        if (likely(desc->handle_irq))
-                desc->handle_irq(irq, desc);
-        else
-                __do_IRQ(irq);
-#endif
 }
 
 static inline void generic_handle_irq(unsigned int irq)
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 5a9d9059520b..2fe6e84894a4 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -243,6 +243,8 @@ extern int test_taint(unsigned flag);
 extern unsigned long get_taint(void);
 extern int root_mountflags;
 
+extern bool early_boot_irqs_disabled;
+
 /* Values used for system_state */
 extern enum system_states {
         SYSTEM_BOOTING,
@@ -573,12 +575,6 @@ struct sysinfo {
         char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */
 };
 
-/* Force a compilation error if condition is true */
-#define BUILD_BUG_ON(condition) ((void)BUILD_BUG_ON_ZERO(condition))
-
-/* Force a compilation error if condition is constant and true */
-#define MAYBE_BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2 * !!(cond)]))
-
 /* Force a compilation error if a constant expression is not a power of 2 */
 #define BUILD_BUG_ON_NOT_POWER_OF_2(n)                  \
         BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0))
@@ -590,6 +586,32 @@ struct sysinfo {
 #define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))
 #define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); }))
 
+/**
+ * BUILD_BUG_ON - break compile if a condition is true.
+ * @condition: the condition which the compiler should know is false.
+ *
+ * If you have some code which relies on certain constants being equal, or
+ * other compile-time-evaluated condition, you should use BUILD_BUG_ON to
+ * detect if someone changes it.
+ *
+ * The implementation uses gcc's reluctance to create a negative array, but
+ * gcc (as of 4.4) only emits that error for obvious cases (eg. not arguments
+ * to inline functions).  So as a fallback we use the optimizer; if it can't
+ * prove the condition is false, it will cause a link error on the undefined
+ * "__build_bug_on_failed".  This error message can be harder to track down
+ * though, hence the two different methods.
+ */
+#ifndef __OPTIMIZE__
+#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
+#else
+extern int __build_bug_on_failed;
+#define BUILD_BUG_ON(condition)                                 \
+        do {                                                    \
+                ((void)sizeof(char[1 - 2*!!(condition)]));      \
+                if (condition) __build_bug_on_failed = 1;       \
+        } while(0)
+#endif
+
 /* Trap pasters of __FUNCTION__ at compile-time */
 #define __FUNCTION__ (__func__)
 
diff --git a/include/linux/kmemcheck.h b/include/linux/kmemcheck.h
index 08d7dc4ddf40..39f8453239f7 100644
--- a/include/linux/kmemcheck.h
+++ b/include/linux/kmemcheck.h
@@ -76,7 +76,7 @@ bool kmemcheck_is_obj_initialized(unsigned long addr, size_t size);
                                                                         \
                 _n = (long) &((ptr)->name##_end)                        \
                         - (long) &((ptr)->name##_begin);                \
-                MAYBE_BUILD_BUG_ON(_n < 0);                             \
+                BUILD_BUG_ON(_n < 0);                                   \
                                                                         \
                 kmemcheck_mark_initialized(&((ptr)->name##_begin), _n); \
         } while (0)
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index 71c09b26c759..4aef1dda6406 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -436,16 +436,8 @@ do {								\
 #endif /* CONFIG_LOCKDEP */
 
 #ifdef CONFIG_TRACE_IRQFLAGS
-extern void early_boot_irqs_off(void);
-extern void early_boot_irqs_on(void);
 extern void print_irqtrace_events(struct task_struct *curr);
 #else
-static inline void early_boot_irqs_off(void)
-{
-}
-static inline void early_boot_irqs_on(void)
-{
-}
 static inline void print_irqtrace_events(struct task_struct *curr)
 {
 }
@@ -522,12 +514,15 @@ static inline void print_irqtrace_events(struct task_struct *curr)
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
 # ifdef CONFIG_PROVE_LOCKING
 #  define lock_map_acquire(l)           lock_acquire(l, 0, 0, 0, 2, NULL, _THIS_IP_)
+#  define lock_map_acquire_read(l)      lock_acquire(l, 0, 0, 2, 2, NULL, _THIS_IP_)
 # else
 #  define lock_map_acquire(l)           lock_acquire(l, 0, 0, 0, 1, NULL, _THIS_IP_)
+#  define lock_map_acquire_read(l)      lock_acquire(l, 0, 0, 2, 1, NULL, _THIS_IP_)
 # endif
 # define lock_map_release(l)                    lock_release(l, 1, _THIS_IP_)
 #else
 # define lock_map_acquire(l)                    do { } while (0)
+# define lock_map_acquire_read(l)               do { } while (0)
 # define lock_map_release(l)                    do { } while (0)
 #endif
 
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 6a576f989437..f512e189be5a 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -146,6 +146,10 @@ unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order,
                                                 gfp_t gfp_mask);
 u64 mem_cgroup_get_limit(struct mem_cgroup *mem);
 
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+void mem_cgroup_split_huge_fixup(struct page *head, struct page *tail);
+#endif
+
 #else /* CONFIG_CGROUP_MEM_RES_CTLR */
 struct mem_cgroup;
 
@@ -335,6 +339,11 @@ u64 mem_cgroup_get_limit(struct mem_cgroup *mem)
         return 0;
 }
 
+static inline void mem_cgroup_split_huge_fixup(struct page *head,
+                                                struct page *tail)
+{
+}
+
 #endif /* CONFIG_CGROUP_MEM_CONT */
 
 #endif /* _LINUX_MEMCONTROL_H */
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 956a35532f47..f6385fc17ad4 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -470,6 +470,7 @@ static inline void set_compound_order(struct page *page, unsigned long order)
         page[1].lru.prev = (void *)order;
 }
 
+#ifdef CONFIG_MMU
 /*
  * Do pte_mkwrite, but only if the vma says VM_WRITE.  We do this when
  * servicing faults for write access.  In the normal case, do always want
@@ -482,6 +483,7 @@ static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma)
                 pte = pte_mkwrite(pte);
         return pte;
 }
+#endif
 
 /*
  * Multiple processes may "see" the same page. E.g. for untouched
diff --git a/include/linux/mmc/sh_mmcif.h b/include/linux/mmc/sh_mmcif.h
index bf173502d744..38d393092812 100644
--- a/include/linux/mmc/sh_mmcif.h
+++ b/include/linux/mmc/sh_mmcif.h
@@ -94,12 +94,12 @@ struct sh_mmcif_plat_data {
 
 static inline u32 sh_mmcif_readl(void __iomem *addr, int reg)
 {
-        return readl(addr + reg);
+        return __raw_readl(addr + reg);
 }
 
 static inline void sh_mmcif_writel(void __iomem *addr, int reg, u32 val)
 {
-        writel(val, addr + reg);
+        __raw_writel(val, addr + reg);
 }
 
 #define SH_MMCIF_BBS 512 /* boot block size */
diff --git a/include/linux/module.h b/include/linux/module.h
index 8b17fd8c790d..e7c6385c6683 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -58,6 +58,12 @@ struct module_attribute {
         void (*free)(struct module *);
 };
 
+struct module_version_attribute {
+        struct module_attribute mattr;
+        const char *module_name;
+        const char *version;
+};
+
 struct module_kobject
 {
         struct kobject kobj;
@@ -161,7 +167,28 @@ extern struct module __this_module;
   Using this automatically adds a checksum of the .c files and the
   local headers in "srcversion".
 */
+
+#if defined(MODULE) || !defined(CONFIG_SYSFS)
 #define MODULE_VERSION(_version) MODULE_INFO(version, _version)
+#else
+#define MODULE_VERSION(_version)                                        \
+        extern ssize_t __modver_version_show(struct module_attribute *, \
+                                             struct module *, char *);  \
+        static struct module_version_attribute __modver_version_attr    \
+        __used                                                          \
+    __attribute__ ((__section__ ("__modver"),aligned(sizeof(void *)))) \
+        = {                                                             \
+                .mattr  = {                                             \
+                        .attr   = {                                     \
+                                .name   = "version",                    \
+                                .mode   = S_IRUGO,                      \
+                        },                                              \
+                        .show   = __modver_version_show,                \
+                },                                                      \
+                .module_name    = KBUILD_MODNAME,                       \
+                .version        = _version,                             \
+        }
+#endif
 
 /* Optional firmware file (or files) needed by the module
  * format is simply firmware file name.  Multiple firmware
diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h
index 112adf8bd47d..07b41951e3fa 100644
--- a/include/linux/moduleparam.h
+++ b/include/linux/moduleparam.h
@@ -16,15 +16,17 @@
 /* Chosen so that structs with an unsigned long line up. */
 #define MAX_PARAM_PREFIX_LEN (64 - sizeof(unsigned long))
 
-#ifdef MODULE
 #define ___module_cat(a,b) __mod_ ## a ## b
 #define __module_cat(a,b) ___module_cat(a,b)
+#ifdef MODULE
 #define __MODULE_INFO(tag, name, info)                                    \
 static const char __module_cat(name,__LINE__)[]                           \
   __used __attribute__((section(".modinfo"), unused, aligned(1)))         \
   = __stringify(tag) "=" info
 #else  /* !MODULE */
-#define __MODULE_INFO(tag, name, info)
+/* This struct is here for syntactic coherency, it is not used */
+#define __MODULE_INFO(tag, name, info)                                    \
+  struct __module_cat(name,__LINE__) {}
 #endif
 #define __MODULE_PARM_TYPE(name, _type)                                   \
   __MODULE_INFO(parmtype, name##type, #name ":" _type)
diff --git a/include/linux/nfsacl.h b/include/linux/nfsacl.h
index f321b578edeb..fabcb1e5c460 100644
--- a/include/linux/nfsacl.h
+++ b/include/linux/nfsacl.h
@@ -51,10 +51,10 @@ nfsacl_size(struct posix_acl *acl_access, struct posix_acl *acl_default)
         return w;
 }
 
-extern unsigned int
+extern int
 nfsacl_encode(struct xdr_buf *buf, unsigned int base, struct inode *inode,
               struct posix_acl *acl, int encode_entries, int typeflag);
-extern unsigned int
+extern int
 nfsacl_decode(struct xdr_buf *buf, unsigned int base, unsigned int *aclcnt,
               struct posix_acl **pacl);
 
diff --git a/include/linux/posix_acl.h b/include/linux/posix_acl.h
index d68283a898bb..54211c1cd926 100644
--- a/include/linux/posix_acl.h
+++ b/include/linux/posix_acl.h
@@ -71,6 +71,7 @@ posix_acl_release(struct posix_acl *acl)
 
 /* posix_acl.c */
 
+extern void posix_acl_init(struct posix_acl *, int);
 extern struct posix_acl *posix_acl_alloc(int, gfp_t);
 extern struct posix_acl *posix_acl_clone(const struct posix_acl *, gfp_t);
 extern int posix_acl_valid(const struct posix_acl *);
diff --git a/include/linux/quota.h b/include/linux/quota.h
index 94c1f03b50eb..9a85412e0db6 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -322,9 +322,12 @@ struct dquot_operations {
         qsize_t *(*get_reserved_space) (struct inode *);
 };
 
+struct path;
+
 /* Operations handling requests from userspace */
 struct quotactl_ops {
-        int (*quota_on)(struct super_block *, int, int, char *);
+        int (*quota_on)(struct super_block *, int, int, struct path *);
+        int (*quota_on_meta)(struct super_block *, int, int);
         int (*quota_off)(struct super_block *, int);
         int (*quota_sync)(struct super_block *, int, int);
         int (*get_info)(struct super_block *, int, struct if_dqinfo *);
diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h
index 223b14cd129c..eb354f6f26b3 100644
--- a/include/linux/quotaops.h
+++ b/include/linux/quotaops.h
@@ -76,11 +76,9 @@ int dquot_mark_dquot_dirty(struct dquot *dquot);
 
 int dquot_file_open(struct inode *inode, struct file *file);
 
-int dquot_quota_on(struct super_block *sb, int type, int format_id,
-        char *path);
 int dquot_enable(struct inode *inode, int type, int format_id,
         unsigned int flags);
-int dquot_quota_on_path(struct super_block *sb, int type, int format_id,
+int dquot_quota_on(struct super_block *sb, int type, int format_id,
         struct path *path);
 int dquot_quota_on_mount(struct super_block *sb, char *qf_name,
         int format_id, int type);
diff --git a/include/linux/rtc.h b/include/linux/rtc.h
index 3c995b4d742c..a0b639f8e805 100644
--- a/include/linux/rtc.h
+++ b/include/linux/rtc.h
@@ -235,8 +235,6 @@ extern int rtc_irq_set_freq(struct rtc_device *rtc,
                                 struct rtc_task *task, int freq);
 extern int rtc_update_irq_enable(struct rtc_device *rtc, unsigned int enabled);
 extern int rtc_alarm_irq_enable(struct rtc_device *rtc, unsigned int enabled);
-extern int rtc_dev_update_irq_enable_emul(struct rtc_device *rtc,
-                                                unsigned int enabled);
 
 void rtc_aie_update_irq(void *private);
 void rtc_uie_update_irq(void *private);
@@ -246,8 +244,6 @@ int rtc_register(rtc_task_t *task);
 int rtc_unregister(rtc_task_t *task);
 int rtc_control(rtc_task_t *t, unsigned int cmd, unsigned long arg);
 
-void rtc_timer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer);
-void rtc_timer_remove(struct rtc_device *rtc, struct rtc_timer *timer);
 void rtc_timer_init(struct rtc_timer *timer, void (*f)(void* p), void* data);
 int rtc_timer_start(struct rtc_device *rtc, struct rtc_timer* timer,
                         ktime_t expires, ktime_t period);
diff --git a/include/linux/sunrpc/bc_xprt.h b/include/linux/sunrpc/bc_xprt.h
index c50b458b8a3f..082884295f80 100644
--- a/include/linux/sunrpc/bc_xprt.h
+++ b/include/linux/sunrpc/bc_xprt.h
@@ -47,14 +47,6 @@ static inline int svc_is_backchannel(const struct svc_rqst *rqstp)
                 return 1;
         return 0;
 }
-static inline struct nfs4_sessionid *bc_xprt_sid(struct svc_rqst *rqstp)
-{
-        if (svc_is_backchannel(rqstp))
-                return (struct nfs4_sessionid *)
-                        rqstp->rq_server->sv_bc_xprt->xpt_bc_sid;
-        return NULL;
-}
-
 #else /* CONFIG_NFS_V4_1 */
 static inline int xprt_setup_backchannel(struct rpc_xprt *xprt,
                                          unsigned int min_reqs)
@@ -67,11 +59,6 @@ static inline int svc_is_backchannel(const struct svc_rqst *rqstp)
         return 0;
 }
 
-static inline struct nfs4_sessionid *bc_xprt_sid(struct svc_rqst *rqstp)
-{
-        return NULL;
-}
-
 static inline void xprt_free_bc_request(struct rpc_rqst *req)
 {
 }
diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h
index 059877b4d85b..7ad9751a0d87 100644
--- a/include/linux/sunrpc/svc_xprt.h
+++ b/include/linux/sunrpc/svc_xprt.h
@@ -77,7 +77,6 @@ struct svc_xprt {
         size_t                  xpt_remotelen;  /* length of address */
         struct rpc_wait_queue   xpt_bc_pending; /* backchannel wait queue */
         struct list_head        xpt_users;      /* callbacks on free */
-        void                    *xpt_bc_sid;    /* back channel session ID */
 
         struct net              *xpt_net;
         struct rpc_xprt         *xpt_bc_xprt;   /* NFSv4.1 backchannel */
diff --git a/include/linux/sysrq.h b/include/linux/sysrq.h
index 387fa7d05c98..7faf933cced7 100644
--- a/include/linux/sysrq.h
+++ b/include/linux/sysrq.h
@@ -17,6 +17,9 @@
 #include <linux/errno.h>
 #include <linux/types.h>
 
+/* Enable/disable SYSRQ support by default (0==no, 1==yes). */
+#define SYSRQ_DEFAULT_ENABLE    1
+
 /* Possible values of bitmask for enabling sysrq functions */
 /* 0x0001 is reserved for enable everything */
 #define SYSRQ_ENABLE_LOG        0x0002
diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
index dd6ee49a0844..a854fe89484e 100644
--- a/include/linux/usb/hcd.h
+++ b/include/linux/usb/hcd.h
@@ -112,6 +112,7 @@ struct usb_hcd {
         /* Flags that get set only during HCD registration or removal. */
         unsigned                rh_registered:1;/* is root hub registered? */
         unsigned                rh_pollable:1;  /* may we poll the root hub? */
+        unsigned                msix_enabled:1; /* driver has MSI-X enabled? */
 
         /* The next flag is a stopgap, to be removed when all the HCDs
          * support the new root-hub polling mechanism. */
diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index 16d682f4f7c3..c9049139a7a5 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -347,6 +347,9 @@ extern int usb_serial_generic_prepare_write_buffer(struct usb_serial_port *port,
 extern int usb_serial_handle_sysrq_char(struct usb_serial_port *port,
                                         unsigned int ch);
 extern int usb_serial_handle_break(struct usb_serial_port *port);
+extern void usb_serial_handle_dcd_change(struct usb_serial_port *usb_port,
+                                         struct tty_struct *tty,
+                                         unsigned int status);
 
 
 extern int usb_serial_bus_register(struct usb_serial_driver *device);
diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h
index 0093dd7c1d6f..800617b4ddd5 100644
--- a/include/linux/virtio_config.h
+++ b/include/linux/virtio_config.h
@@ -109,7 +109,10 @@ static inline bool virtio_has_feature(const struct virtio_device *vdev,
                                       unsigned int fbit)
 {
         /* Did you forget to fix assumptions on max features? */
-        MAYBE_BUILD_BUG_ON(fbit >= 32);
+        if (__builtin_constant_p(fbit))
+                BUILD_BUG_ON(fbit >= 32);
+        else
+                BUG_ON(fbit >= 32);
 
         if (fbit < VIRTIO_TRANSPORT_F_START)
                 virtio_check_driver_offered_feature(vdev, fbit);