Merge ../linux-2.6

3 files changed, 16 insertions, 16 deletions

diff --git a/kernel/futex.c b/kernel/futex.c
index aca8d10704f6..5872e3507f35 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -201,21 +201,6 @@ static int get_futex_key(unsigned long uaddr, union futex_key *key)
          * from swap.  But that's a lot of code to duplicate here
          * for a rare case, so we simply fetch the page.
          */
-
-        /*
-         * Do a quick atomic lookup first - this is the fastpath.
-         */
-        page = follow_page(mm, uaddr, FOLL_TOUCH|FOLL_GET);
-        if (likely(page != NULL)) {
-                key->shared.pgoff =
-                        page->index << (PAGE_CACHE_SHIFT - PAGE_SHIFT);
-                put_page(page);
-                return 0;
-        }
-
-        /*
-         * Do it the general way.
-         */
         err = get_user_pages(current, mm, uaddr, 1, 0, 0, &page, NULL);
         if (err >= 0) {
                 key->shared.pgoff =
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 3bd7226d15fa..81c49a4d679e 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -36,6 +36,9 @@ void synchronize_irq(unsigned int irq)
 {
         struct irq_desc *desc = irq_desc + irq;
 
+        if (irq >= NR_IRQS)
+                return;
+
         while (desc->status & IRQ_INPROGRESS)
                 cpu_relax();
 }
@@ -60,6 +63,9 @@ void disable_irq_nosync(unsigned int irq)
         irq_desc_t *desc = irq_desc + irq;
         unsigned long flags;
 
+        if (irq >= NR_IRQS)
+                return;
+
         spin_lock_irqsave(&desc->lock, flags);
         if (!desc->depth++) {
                 desc->status |= IRQ_DISABLED;
@@ -86,6 +92,9 @@ void disable_irq(unsigned int irq)
 {
         irq_desc_t *desc = irq_desc + irq;
 
+        if (irq >= NR_IRQS)
+                return;
+
         disable_irq_nosync(irq);
         if (desc->action)
                 synchronize_irq(irq);
@@ -108,6 +117,9 @@ void enable_irq(unsigned int irq)
         irq_desc_t *desc = irq_desc + irq;
         unsigned long flags;
 
+        if (irq >= NR_IRQS)
+                return;
+
         spin_lock_irqsave(&desc->lock, flags);
         switch (desc->depth) {
         case 0:
@@ -163,6 +175,9 @@ int setup_irq(unsigned int irq, struct irqaction * new)
         unsigned long flags;
         int shared = 0;
 
+        if (irq >= NR_IRQS)
+                return -EINVAL;
+
         if (desc->handler == &no_irq_type)
                 return -ENOSYS;
         /*
diff --git a/kernel/printk.c b/kernel/printk.c
index ac8a08f36207..5287be83e3e7 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -956,7 +956,7 @@ int unregister_console(struct console *console)
         if (console_drivers == console) {
                 console_drivers=console->next;
                 res = 0;
-        } else {
+        } else if (console_drivers) {
                 for (a=console_drivers->next, b=console_drivers ;
                      a; b=a, a=b->next) {
                         if (a == console) {