Merge tag 'v3.14.49' of git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable into linux-linaro-lsk-v3.14

This is the 3.14.49 stable release

* tag 'v3.14.49' of git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable: (126 commits)
  Linux 3.14.49
  MIPS: KVM: Do not sign extend on unsigned MMIO load
  qla2xxx: Mark port lost when we receive an RSCN for it.
  Fix firmware loader uevent buffer NULL pointer dereference
  hpfs: hpfs_error: Remove static buffer, use vsprintf extension %pV instead
  arm64: Don't report clear pmds and puds as huge
  agp/intel: Fix typo in needs_ilk_vtd_wa()
  rbd: use GFP_NOIO in rbd_obj_request_create()
  9p: don't leave a half-initialized inode sitting around
  9p: forgetting to cancel request on interrupted zero-copy RPC
  SUNRPC: Fix a memory leak in the backchannel code
  nfs: increase size of EXCHANGE_ID name string buffer
  fixing infinite OPEN loop in 4.0 stateid recovery
  NFS: Fix size of NFSACL SETACL operations
  watchdog: omap: assert the counter being stopped before reprogramming
  of: return NUMA_NO_NODE from fallback of_node_to_nid()
  block: Do a full clone when splitting discard bios
  USB: usbfs: allow URBs to be reaped after disconnection
  dell-laptop: Fix allocating & freeing SMI buffer page
  ideapad: fix software rfkill setting
  ...

2 files changed, 47 insertions, 19 deletions

diff --git a/drivers/acpi/acpica/utxfinit.c b/drivers/acpi/acpica/utxfinit.c
index 246ef68681f4..2c3c578faa0a 100644
--- a/drivers/acpi/acpica/utxfinit.c
+++ b/drivers/acpi/acpica/utxfinit.c
@@ -175,10 +175,12 @@ acpi_status __init acpi_enable_subsystem(u32 flags)
 	 * Obtain a permanent mapping for the FACS. This is required for the
 	 * Global Lock and the Firmware Waking Vector
 	 */
-	status = acpi_tb_initialize_facs();
-	if (ACPI_FAILURE(status)) {
-		ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
-		return_ACPI_STATUS(status);
+	if (!(flags & ACPI_NO_FACS_INIT)) {
+		status = acpi_tb_initialize_facs();
+		if (ACPI_FAILURE(status)) {
+			ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
+			return_ACPI_STATUS(status);
+		}
 	}
 #endif				/* !ACPI_REDUCED_HARDWARE */
 
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index b48aefab57e8..60be8d0ef100 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -450,6 +450,16 @@ static int __init acpi_bus_init_irq(void)
 u8 acpi_gbl_permanent_mmap;
 
 
+/**
+ * acpi_early_init - Initialize ACPICA and populate the ACPI namespace.
+ *
+ * The ACPI tables are accessible after this, but the handling of events has not
+ * been initialized and the global lock is not available yet, so AML should not
+ * be executed at this point.
+ *
+ * Doing this before switching the EFI runtime services to virtual mode allows
+ * the EfiBootServices memory to be freed slightly earlier on boot.
+ */
 void __init acpi_early_init(void)
 {
 	acpi_status status;
@@ -510,26 +520,42 @@ void __init acpi_early_init(void)
 		acpi_gbl_FADT.sci_interrupt = acpi_sci_override_gsi;
 	}
 #endif
+	return;
+
+ error0:
+	disable_acpi();
+}
+
+/**
+ * acpi_subsystem_init - Finalize the early initialization of ACPI.
+ *
+ * Switch over the platform to the ACPI mode (if possible), initialize the
+ * handling of ACPI events, install the interrupt and global lock handlers.
+ *
+ * Doing this too early is generally unsafe, but at the same time it needs to be
+ * done before all things that really depend on ACPI.  The right spot appears to
+ * be before finalizing the EFI initialization.
+ */
+void __init acpi_subsystem_init(void)
+{
+	acpi_status status;
+
+	if (acpi_disabled)
+		return;
 
 	status = acpi_enable_subsystem(~ACPI_NO_ACPI_ENABLE);
 	if (ACPI_FAILURE(status)) {
 		printk(KERN_ERR PREFIX "Unable to enable ACPI\n");
-		goto error0;
+		disable_acpi();
+	} else {
+		/*
+		 * If the system is using ACPI then we can be reasonably
+		 * confident that any regulators are managed by the firmware
+		 * so tell the regulator core it has everything it needs to
+		 * know.
+		 */
+		regulator_has_full_constraints();
 	}
-
-	/*
-	 * If the system is using ACPI then we can be reasonably
-	 * confident that any regulators are managed by the firmware
-	 * so tell the regulator core it has everything it needs to
-	 * know.
-	 */
-	regulator_has_full_constraints();
-
-	return;
-
-      error0:
-	disable_acpi();
-	return;
 }
 
 static int __init acpi_bus_init(void)