4 files changed, 32 insertions, 56 deletions

diff --git a/arch/alpha/include/asm/futex.h b/arch/alpha/include/asm/futex.h
index e8a761aee088..f939794363ac 100644
--- a/arch/alpha/include/asm/futex.h
+++ b/arch/alpha/include/asm/futex.h
@@ -108,7 +108,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
         "       lda     $31,3b-2b(%0)\n"
         "       .previous\n"
         :       "+r"(ret), "=&r"(prev), "=&r"(cmp)
-        :       "r"(uaddr), "r"((long)oldval), "r"(newval)
+        :       "r"(uaddr), "r"((long)(int)oldval), "r"(newval)
         :       "memory");
 
         *uval = prev;
diff --git a/arch/alpha/include/asm/socket.h b/arch/alpha/include/asm/socket.h
index 082355f159e6..dcb221a4b5be 100644
--- a/arch/alpha/include/asm/socket.h
+++ b/arch/alpha/include/asm/socket.h
@@ -71,6 +71,10 @@
 
 #define SO_WIFI_STATUS          41
 #define SCM_WIFI_STATUS         SO_WIFI_STATUS
+#define SO_PEEK_OFF             42
+
+/* Instruct lower device to use last 4-bytes of skb data as FCS */
+#define SO_NOFCS                43
 
 /* O_NONBLOCK clashes with the bits used for socket types.  Therefore we
  * have to define SOCK_NONBLOCK to a different value here.
diff --git a/arch/alpha/kernel/perf_event.c b/arch/alpha/kernel/perf_event.c
index 8143cd7cdbfb..0dae252f7a33 100644
--- a/arch/alpha/kernel/perf_event.c
+++ b/arch/alpha/kernel/perf_event.c
@@ -685,6 +685,10 @@ static int alpha_pmu_event_init(struct perf_event *event)
 {
         int err;
 
+        /* does not support taken branch sampling */
+        if (has_branch_stack(event))
+                return -EOPNOTSUPP;
+
         switch (event->attr.type) {
         case PERF_TYPE_RAW:
         case PERF_TYPE_HARDWARE:
diff --git a/arch/alpha/kernel/srmcons.c b/arch/alpha/kernel/srmcons.c
index 783f4e50c111..3ea809430eda 100644
--- a/arch/alpha/kernel/srmcons.c
+++ b/arch/alpha/kernel/srmcons.c
@@ -30,10 +30,9 @@ static int srm_is_registered_console = 0;
 #define MAX_SRM_CONSOLE_DEVICES 1       /* only support 1 console device */
 
 struct srmcons_private {
-        struct tty_struct *tty;
+        struct tty_port port;
         struct timer_list timer;
-        spinlock_t lock;
-};
+} srmcons_singleton;
 
 typedef union _srmcons_result {
         struct {
@@ -68,22 +67,21 @@ static void
 srmcons_receive_chars(unsigned long data)
 {
         struct srmcons_private *srmconsp = (struct srmcons_private *)data;
+        struct tty_port *port = &srmconsp->port;
         unsigned long flags;
         int incr = 10;
 
         local_irq_save(flags);
         if (spin_trylock(&srmcons_callback_lock)) {
-                if (!srmcons_do_receive_chars(srmconsp->tty))
+                if (!srmcons_do_receive_chars(port->tty))
                         incr = 100;
                 spin_unlock(&srmcons_callback_lock);
         } 
 
-        spin_lock(&srmconsp->lock);
-        if (srmconsp->tty) {
-                srmconsp->timer.expires = jiffies + incr;
-                add_timer(&srmconsp->timer);
-        }
-        spin_unlock(&srmconsp->lock);
+        spin_lock(&port->lock);
+        if (port->tty)
+                mod_timer(&srmconsp->timer, jiffies + incr);
+        spin_unlock(&port->lock);
 
         local_irq_restore(flags);
 }
@@ -156,56 +154,22 @@ srmcons_chars_in_buffer(struct tty_struct *tty)
 }
 
 static int
-srmcons_get_private_struct(struct srmcons_private **ps)
-{
-        static struct srmcons_private *srmconsp = NULL;
-        static DEFINE_SPINLOCK(srmconsp_lock);
-        unsigned long flags;
-        int retval = 0;
-
-        if (srmconsp == NULL) {
-                srmconsp = kmalloc(sizeof(*srmconsp), GFP_KERNEL);
-                spin_lock_irqsave(&srmconsp_lock, flags);
-
-                if (srmconsp == NULL)
-                        retval = -ENOMEM;
-                else {
-                        srmconsp->tty = NULL;
-                        spin_lock_init(&srmconsp->lock);
-                        init_timer(&srmconsp->timer);
-                }
-
-                spin_unlock_irqrestore(&srmconsp_lock, flags);
-        }
-
-        *ps = srmconsp;
-        return retval;
-}
-
-static int
 srmcons_open(struct tty_struct *tty, struct file *filp)
 {
-        struct srmcons_private *srmconsp;
+        struct srmcons_private *srmconsp = &srmcons_singleton;
+        struct tty_port *port = &srmconsp->port;
         unsigned long flags;
-        int retval;
-
-        retval = srmcons_get_private_struct(&srmconsp);
-        if (retval)
-                return retval;
 
-        spin_lock_irqsave(&srmconsp->lock, flags);
+        spin_lock_irqsave(&port->lock, flags);
 
-        if (!srmconsp->tty) {
+        if (!port->tty) {
                 tty->driver_data = srmconsp;
-
-                srmconsp->tty = tty;
-                srmconsp->timer.function = srmcons_receive_chars;
-                srmconsp->timer.data = (unsigned long)srmconsp;
-                srmconsp->timer.expires = jiffies + 10;
-                add_timer(&srmconsp->timer);
+                tty->port = port;
+                port->tty = tty; /* XXX proper refcounting */
+                mod_timer(&srmconsp->timer, jiffies + 10);
         }
 
-        spin_unlock_irqrestore(&srmconsp->lock, flags);
+        spin_unlock_irqrestore(&port->lock, flags);
 
         return 0;
 }
@@ -214,16 +178,17 @@ static void
 srmcons_close(struct tty_struct *tty, struct file *filp)
 {
         struct srmcons_private *srmconsp = tty->driver_data;
+        struct tty_port *port = &srmconsp->port;
         unsigned long flags;
 
-        spin_lock_irqsave(&srmconsp->lock, flags);
+        spin_lock_irqsave(&port->lock, flags);
 
         if (tty->count == 1) {
-                srmconsp->tty = NULL;
+                port->tty = NULL;
                 del_timer(&srmconsp->timer);
         }
 
-        spin_unlock_irqrestore(&srmconsp->lock, flags);
+        spin_unlock_irqrestore(&port->lock, flags);
 }
 
 
@@ -240,6 +205,9 @@ static const struct tty_operations srmcons_ops = {
 static int __init
 srmcons_init(void)
 {
+        tty_port_init(&srmcons_singleton.port);
+        setup_timer(&srmcons_singleton.timer, srmcons_receive_chars,
+                        (unsigned long)&srmcons_singleton);
         if (srm_is_registered_console) {
                 struct tty_driver *driver;
                 int err;