Merge tag 'please-pull-ia64-for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux

Pull ia64 update from Tony Luck:
 "Usual mish-mash of ia64 fixes for next merge window"

* tag 'please-pull-ia64-for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
  [IA64] xen: Fix return value check in xencomm_vtop()
  [IA64] Must enable interrupts in do_notify_resume_user before calling tracehook_notify_resume()
  [IA64] kexec: Move the dereference below the NULL test
  [IA64] Fix a node distance bug

4 files changed, 7 insertions, 5 deletions

diff --git a/arch/ia64/include/asm/numa.h b/arch/ia64/include/asm/numa.h
index 6a8a27cfae3e..2e27ef175652 100644
--- a/arch/ia64/include/asm/numa.h
+++ b/arch/ia64/include/asm/numa.h
@@ -59,7 +59,7 @@ extern struct node_cpuid_s node_cpuid[NR_CPUS];
  */
 
 extern u8 numa_slit[MAX_NUMNODES * MAX_NUMNODES];
-#define node_distance(from,to) (numa_slit[(from) * num_online_nodes() + (to)])
+#define node_distance(from,to) (numa_slit[(from) * MAX_NUMNODES + (to)])
 
 extern int paddr_to_nid(unsigned long paddr);
 
diff --git a/arch/ia64/kernel/machine_kexec.c b/arch/ia64/kernel/machine_kexec.c
index 070e8effa175..5151a649c96b 100644
--- a/arch/ia64/kernel/machine_kexec.c
+++ b/arch/ia64/kernel/machine_kexec.c
@@ -85,12 +85,13 @@ static void ia64_machine_kexec(struct unw_frame_info *info, void *arg)
         struct kimage *image = arg;
         relocate_new_kernel_t rnk;
         void *pal_addr = efi_get_pal_addr();
-        unsigned long code_addr = (unsigned long)page_address(image->control_code_page);
+        unsigned long code_addr;
         int ii;
         u64 fp, gp;
         ia64_fptr_t *init_handler = (ia64_fptr_t *)ia64_os_init_on_kdump;
 
         BUG_ON(!image);
+        code_addr = (unsigned long)page_address(image->control_code_page);
         if (image->type == KEXEC_TYPE_CRASH) {
                 crash_save_this_cpu();
                 current->thread.ksp = (__u64)info->sw - 16;
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index 3e316ec0b835..ee31fe9b310e 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -197,8 +197,8 @@ do_notify_resume_user(sigset_t *unused, struct sigscratch *scr, long in_syscall)
                 ia64_do_signal(scr, in_syscall);
         }
 
-        if (test_thread_flag(TIF_NOTIFY_RESUME)) {
-                clear_thread_flag(TIF_NOTIFY_RESUME);
+        if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME)) {
+                local_irq_enable();     /* force interrupt enable */
                 tracehook_notify_resume(&scr->pt);
         }
 
diff --git a/arch/ia64/xen/xencomm.c b/arch/ia64/xen/xencomm.c
index 1f5d7ac82e97..73d903ca2d64 100644
--- a/arch/ia64/xen/xencomm.c
+++ b/arch/ia64/xen/xencomm.c
@@ -17,6 +17,7 @@
  */
 
 #include <linux/mm.h>
+#include <linux/err.h>
 
 static unsigned long kernel_virtual_offset;
 static int is_xencomm_initialized;
@@ -98,7 +99,7 @@ xencomm_vtop(unsigned long vaddr)
 
         /* We assume the page is modified.  */
         page = follow_page(vma, vaddr, FOLL_WRITE | FOLL_TOUCH);
-        if (!page)
+        if (IS_ERR_OR_NULL(page))
                 return ~0UL;
 
         return (page_to_pfn(page) << PAGE_SHIFT) | (vaddr & ~PAGE_MASK);