Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 update from Martin Schwidefsky:
 "The most prominent change in this patch set is the software dirty bit
  patch for s390.  It removes __HAVE_ARCH_PAGE_TEST_AND_CLEAR_DIRTY and
  the page_test_and_clear_dirty primitive which makes the common memory
  management code a bit less obscure.

  Heiko fixed most of the PCI related fallout, more often than not
  missing GENERIC_HARDIRQS dependencies.  Notable is one of the 3270
  patches which adds an export to tty_io to be able to resize a tty.

  The rest is the usual bunch of cleanups and bug fixes."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (42 commits)
  s390/module: Add missing R_390_NONE relocation type
  drivers/gpio: add missing GENERIC_HARDIRQ dependency
  drivers/input: add couple of missing GENERIC_HARDIRQS dependencies
  s390/cleanup: rename SPP to LPP
  s390/mm: implement software dirty bits
  s390/mm: Fix crst upgrade of mmap with MAP_FIXED
  s390/linker skript: discard exit.data at runtime
  drivers/media: add missing GENERIC_HARDIRQS dependency
  s390/bpf,jit: add vlan tag support
  drivers/net,AT91RM9200: add missing GENERIC_HARDIRQS dependency
  iucv: fix kernel panic at reboot
  s390/Kconfig: sort list of arch selected config options
  phylib: remove !S390 dependeny from Kconfig
  uio: remove !S390 dependency from Kconfig
  dasd: fix sysfs cleanup in dasd_generic_remove
  s390/pci: fix hotplug module init
  s390/pci: cleanup clp page allocation
  s390/pci: cleanup clp inline assembly
  s390/perf: cpum_cf: fallback to software sampling events
  s390/mm: provide PAGE_SHARED define
  ...

1 files changed, 25 insertions, 10 deletions

diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 60e0372..27b4c17 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -51,8 +51,7 @@ EXPORT_SYMBOL_GPL(zpci_list);
 DEFINE_MUTEX(zpci_list_lock);
 EXPORT_SYMBOL_GPL(zpci_list_lock);
 
-struct pci_hp_callback_ops hotplug_ops;
-EXPORT_SYMBOL_GPL(hotplug_ops);
+static struct pci_hp_callback_ops *hotplug_ops;
 
 static DECLARE_BITMAP(zpci_domain, ZPCI_NR_DEVICES);
 static DEFINE_SPINLOCK(zpci_domain_lock);
@@ -974,8 +973,8 @@ int zpci_create_device(struct zpci_dev *zdev)
 
 	mutex_lock(&zpci_list_lock);
 	list_add_tail(&zdev->entry, &zpci_list);
-	if (hotplug_ops.create_slot)
-		hotplug_ops.create_slot(zdev);
+	if (hotplug_ops)
+		hotplug_ops->create_slot(zdev);
 	mutex_unlock(&zpci_list_lock);
 
 	if (zdev->state == ZPCI_FN_STATE_STANDBY)
@@ -989,8 +988,8 @@ int zpci_create_device(struct zpci_dev *zdev)
 out_start:
 	mutex_lock(&zpci_list_lock);
 	list_del(&zdev->entry);
-	if (hotplug_ops.remove_slot)
-		hotplug_ops.remove_slot(zdev);
+	if (hotplug_ops)
+		hotplug_ops->remove_slot(zdev);
 	mutex_unlock(&zpci_list_lock);
 out_bus:
 	zpci_free_domain(zdev);
@@ -1072,13 +1071,29 @@ static void zpci_mem_exit(void)
 	kmem_cache_destroy(zdev_fmb_cache);
 }
 
-unsigned int pci_probe = 1;
-EXPORT_SYMBOL_GPL(pci_probe);
+void zpci_register_hp_ops(struct pci_hp_callback_ops *ops)
+{
+	mutex_lock(&zpci_list_lock);
+	hotplug_ops = ops;
+	mutex_unlock(&zpci_list_lock);
+}
+EXPORT_SYMBOL_GPL(zpci_register_hp_ops);
+
+void zpci_deregister_hp_ops(void)
+{
+	mutex_lock(&zpci_list_lock);
+	hotplug_ops = NULL;
+	mutex_unlock(&zpci_list_lock);
+}
+EXPORT_SYMBOL_GPL(zpci_deregister_hp_ops);
+
+unsigned int s390_pci_probe = 1;
+EXPORT_SYMBOL_GPL(s390_pci_probe);
 
 char * __init pcibios_setup(char *str)
 {
 	if (!strcmp(str, "off")) {
-		pci_probe = 0;
+		s390_pci_probe = 0;
 		return NULL;
 	}
 	return str;
@@ -1088,7 +1103,7 @@ static int __init pci_base_init(void)
 {
 	int rc;
 
-	if (!pci_probe)
+	if (!s390_pci_probe)
 		return 0;
 
 	if (!test_facility(2) || !test_facility(69)