26 files changed, 241 insertions, 136 deletions

diff --git a/arch/arc/mm/dma.c b/arch/arc/mm/dma.c
index 2a07e6ecafbd..71d3efff99d3 100644
--- a/arch/arc/mm/dma.c
+++ b/arch/arc/mm/dma.c
@@ -117,7 +117,7 @@ static int arc_dma_mmap(struct device *dev, struct vm_area_struct *vma,
 
 	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 
-	if (dma_mmap_from_coherent(dev, vma, cpu_addr, size, &ret))
+	if (dma_mmap_from_dev_coherent(dev, vma, cpu_addr, size, &ret))
 		return ret;
 
 	if (off < count && user_count <= (count - off)) {
diff --git a/arch/arm/mm/dma-mapping-nommu.c b/arch/arm/mm/dma-mapping-nommu.c
index 90ee354d803e..6db5fc26d154 100644
--- a/arch/arm/mm/dma-mapping-nommu.c
+++ b/arch/arm/mm/dma-mapping-nommu.c
@@ -40,9 +40,21 @@ static void *arm_nommu_dma_alloc(struct device *dev, size_t size,
 
 {
 	const struct dma_map_ops *ops = &dma_noop_ops;
+	void *ret;
 
 	/*
-	 * We are here because:
+	 * Try generic allocator first if we are advertised that
+	 * consistency is not required.
+	 */
+
+	if (attrs & DMA_ATTR_NON_CONSISTENT)
+		return ops->alloc(dev, size, dma_handle, gfp, attrs);
+
+	ret = dma_alloc_from_global_coherent(size, dma_handle);
+
+	/*
+	 * dma_alloc_from_global_coherent() may fail because:
+	 *
 	 * - no consistent DMA region has been defined, so we can't
 	 *   continue.
 	 * - there is no space left in consistent DMA region, so we
@@ -50,11 +62,8 @@ static void *arm_nommu_dma_alloc(struct device *dev, size_t size,
 	 *   advertised that consistency is not required.
 	 */
 
-	if (attrs & DMA_ATTR_NON_CONSISTENT)
-		return ops->alloc(dev, size, dma_handle, gfp, attrs);
-
-	WARN_ON_ONCE(1);
-	return NULL;
+	WARN_ON_ONCE(ret == NULL);
+	return ret;
 }
 
 static void arm_nommu_dma_free(struct device *dev, size_t size,
@@ -63,14 +72,31 @@ static void arm_nommu_dma_free(struct device *dev, size_t size,
 {
 	const struct dma_map_ops *ops = &dma_noop_ops;
 
-	if (attrs & DMA_ATTR_NON_CONSISTENT)
+	if (attrs & DMA_ATTR_NON_CONSISTENT) {
 		ops->free(dev, size, cpu_addr, dma_addr, attrs);
-	else
-		WARN_ON_ONCE(1);
+	} else {
+		int ret = dma_release_from_global_coherent(get_order(size),
+							   cpu_addr);
+
+		WARN_ON_ONCE(ret == 0);
+	}
 
 	return;
 }
 
+static int arm_nommu_dma_mmap(struct device *dev, struct vm_area_struct *vma,
+			      void *cpu_addr, dma_addr_t dma_addr, size_t size,
+			      unsigned long attrs)
+{
+	int ret;
+
+	if (dma_mmap_from_global_coherent(vma, cpu_addr, size, &ret))
+		return ret;
+
+	return dma_common_mmap(dev, vma, cpu_addr, dma_addr, size);
+}
+
+
 static void __dma_page_cpu_to_dev(phys_addr_t paddr, size_t size,
 				  enum dma_data_direction dir)
 {
@@ -173,6 +199,7 @@ static void arm_nommu_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist
 const struct dma_map_ops arm_nommu_dma_ops = {
 	.alloc			= arm_nommu_dma_alloc,
 	.free			= arm_nommu_dma_free,
+	.mmap			= arm_nommu_dma_mmap,
 	.map_page		= arm_nommu_dma_map_page,
 	.unmap_page		= arm_nommu_dma_unmap_page,
 	.map_sg			= arm_nommu_dma_map_sg,
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index e7380bafbfa6..fcf1473d6fed 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -851,7 +851,7 @@ static int __arm_dma_mmap(struct device *dev, struct vm_area_struct *vma,
 	unsigned long pfn = dma_to_pfn(dev, dma_addr);
 	unsigned long off = vma->vm_pgoff;
 
-	if (dma_mmap_from_coherent(dev, vma, cpu_addr, size, &ret))
+	if (dma_mmap_from_dev_coherent(dev, vma, cpu_addr, size, &ret))
 		return ret;
 
 	if (off < nr_pages && nr_vma_pages <= (nr_pages - off)) {
diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
index e90cd1db42a8..f27d4dd04384 100644
--- a/arch/arm64/mm/dma-mapping.c
+++ b/arch/arm64/mm/dma-mapping.c
@@ -329,7 +329,7 @@ static int __swiotlb_mmap(struct device *dev,
 	vma->vm_page_prot = __get_dma_pgprot(attrs, vma->vm_page_prot,
 					     is_device_dma_coherent(dev));
 
-	if (dma_mmap_from_coherent(dev, vma, cpu_addr, size, &ret))
+	if (dma_mmap_from_dev_coherent(dev, vma, cpu_addr, size, &ret))
 		return ret;
 
 	return __swiotlb_mmap_pfn(vma, pfn, size);
@@ -706,7 +706,7 @@ static int __iommu_mmap_attrs(struct device *dev, struct vm_area_struct *vma,
 	vma->vm_page_prot = __get_dma_pgprot(attrs, vma->vm_page_prot,
 					     is_device_dma_coherent(dev));
 
-	if (dma_mmap_from_coherent(dev, vma, cpu_addr, size, &ret))
+	if (dma_mmap_from_dev_coherent(dev, vma, cpu_addr, size, &ret))
 		return ret;
 
 	if (attrs & DMA_ATTR_FORCE_CONTIGUOUS) {
diff --git a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c
index e08598c70b3e..8e78251eccc2 100644
--- a/arch/mips/mm/dma-default.c
+++ b/arch/mips/mm/dma-default.c
@@ -232,7 +232,7 @@ static int mips_dma_mmap(struct device *dev, struct vm_area_struct *vma,
 	else
 		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 
-	if (dma_mmap_from_coherent(dev, vma, cpu_addr, size, &ret))
+	if (dma_mmap_from_dev_coherent(dev, vma, cpu_addr, size, &ret))
 		return ret;
 
 	if (off < count && user_count <= (count - off)) {
diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c
index 0c82f7903fc7..c1bf75ffb875 100644
--- a/arch/s390/kernel/perf_cpum_sf.c
+++ b/arch/s390/kernel/perf_cpum_sf.c
@@ -998,7 +998,7 @@ static int perf_push_sample(struct perf_event *event, struct sf_raw_sample *sfr)
 	psw_bits(regs.psw).ia	= sfr->basic.ia;
 	psw_bits(regs.psw).dat	= sfr->basic.T;
 	psw_bits(regs.psw).wait = sfr->basic.W;
-	psw_bits(regs.psw).per	= sfr->basic.P;
+	psw_bits(regs.psw).pstate = sfr->basic.P;
 	psw_bits(regs.psw).as	= sfr->basic.AS;
 
 	/*
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index 8d018c76ee85..4198a71b8fdd 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -677,11 +677,11 @@ void ptep_zap_key(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 	unsigned long ptev;
 	pgste_t pgste;
 
-	/* Clear storage key */
+	/* Clear storage key ACC and F, but set R/C */
 	preempt_disable();
 	pgste = pgste_get_lock(ptep);
-	pgste_val(pgste) &= ~(PGSTE_ACC_BITS | PGSTE_FP_BIT |
-			      PGSTE_GR_BIT | PGSTE_GC_BIT);
+	pgste_val(pgste) &= ~(PGSTE_ACC_BITS | PGSTE_FP_BIT);
+	pgste_val(pgste) |= PGSTE_GR_BIT | PGSTE_GC_BIT;
 	ptev = pte_val(*ptep);
 	if (!(ptev & _PAGE_INVALID) && (ptev & _PAGE_WRITE))
 		page_set_storage_key(ptev & PAGE_MASK, PAGE_DEFAULT_KEY, 1);
diff --git a/drivers/base/dma-coherent.c b/drivers/base/dma-coherent.c
index 2ae24c28e70c..1c152aed6b82 100644
--- a/drivers/base/dma-coherent.c
+++ b/drivers/base/dma-coherent.c
@@ -25,7 +25,7 @@ static inline struct dma_coherent_mem *dev_get_coherent_memory(struct device *de
 {
 	if (dev && dev->dma_mem)
 		return dev->dma_mem;
-	return dma_coherent_default_memory;
+	return NULL;
 }
 
 static inline dma_addr_t dma_get_device_base(struct device *dev,
@@ -165,34 +165,15 @@ void *dma_mark_declared_memory_occupied(struct device *dev,
 }
 EXPORT_SYMBOL(dma_mark_declared_memory_occupied);
 
-/**
- * dma_alloc_from_coherent() - try to allocate memory from the per-device coherent area
- *
- * @dev:	device from which we allocate memory
- * @size:	size of requested memory area
- * @dma_handle:	This will be filled with the correct dma handle
- * @ret:	This pointer will be filled with the virtual address
- *		to allocated area.
- *
- * This function should be only called from per-arch dma_alloc_coherent()
- * to support allocation from per-device coherent memory pools.
- *
- * Returns 0 if dma_alloc_coherent should continue with allocating from
- * generic memory areas, or !0 if dma_alloc_coherent should return @ret.
- */
-int dma_alloc_from_coherent(struct device *dev, ssize_t size,
-				       dma_addr_t *dma_handle, void **ret)
+static void *__dma_alloc_from_coherent(struct dma_coherent_mem *mem,
+		ssize_t size, dma_addr_t *dma_handle)
 {
-	struct dma_coherent_mem *mem = dev_get_coherent_memory(dev);
 	int order = get_order(size);
 	unsigned long flags;
 	int pageno;
 	int dma_memory_map;
+	void *ret;
 
-	if (!mem)
-		return 0;
-
-	*ret = NULL;
 	spin_lock_irqsave(&mem->spinlock, flags);
 
 	if (unlikely(size > (mem->size << PAGE_SHIFT)))
@@ -203,21 +184,50 @@ int dma_alloc_from_coherent(struct device *dev, ssize_t size,
 		goto err;
 
 	/*
-	 * Memory was found in the per-device area.
+	 * Memory was found in the coherent area.
 	 */
-	*dma_handle = dma_get_device_base(dev, mem) + (pageno << PAGE_SHIFT);
-	*ret = mem->virt_base + (pageno << PAGE_SHIFT);
+	*dma_handle = mem->device_base + (pageno << PAGE_SHIFT);
+	ret = mem->virt_base + (pageno << PAGE_SHIFT);
 	dma_memory_map = (mem->flags & DMA_MEMORY_MAP);
 	spin_unlock_irqrestore(&mem->spinlock, flags);
 	if (dma_memory_map)
-		memset(*ret, 0, size);
+		memset(ret, 0, size);
 	else
-		memset_io(*ret, 0, size);
+		memset_io(ret, 0, size);
 
-	return 1;
+	return ret;
 
 err:
 	spin_unlock_irqrestore(&mem->spinlock, flags);
+	return NULL;
+}
+
+/**
+ * dma_alloc_from_dev_coherent() - allocate memory from device coherent pool
+ * @dev:	device from which we allocate memory
+ * @size:	size of requested memory area
+ * @dma_handle:	This will be filled with the correct dma handle
+ * @ret:	This pointer will be filled with the virtual address
+ *		to allocated area.
+ *
+ * This function should be only called from per-arch dma_alloc_coherent()
+ * to support allocation from per-device coherent memory pools.
+ *
+ * Returns 0 if dma_alloc_coherent should continue with allocating from
+ * generic memory areas, or !0 if dma_alloc_coherent should return @ret.
+ */
+int dma_alloc_from_dev_coherent(struct device *dev, ssize_t size,
+		dma_addr_t *dma_handle, void **ret)
+{
+	struct dma_coherent_mem *mem = dev_get_coherent_memory(dev);
+
+	if (!mem)
+		return 0;
+
+	*ret = __dma_alloc_from_coherent(mem, size, dma_handle);
+	if (*ret)
+		return 1;
+
 	/*
 	 * In the case where the allocation can not be satisfied from the
 	 * per-device area, try to fall back to generic memory if the
@@ -225,25 +235,20 @@ err:
 	 */
 	return mem->flags & DMA_MEMORY_EXCLUSIVE;
 }
-EXPORT_SYMBOL(dma_alloc_from_coherent);
+EXPORT_SYMBOL(dma_alloc_from_dev_coherent);
 
-/**
- * dma_release_from_coherent() - try to free the memory allocated from per-device coherent memory pool
- * @dev:	device from which the memory was allocated
- * @order:	the order of pages allocated
- * @vaddr:	virtual address of allocated pages
- *
- * This checks whether the memory was allocated from the per-device
- * coherent memory pool and if so, releases that memory.
- *
- * Returns 1 if we correctly released the memory, or 0 if
- * dma_release_coherent() should proceed with releasing memory from
- * generic pools.
- */
-int dma_release_from_coherent(struct device *dev, int order, void *vaddr)
+void *dma_alloc_from_global_coherent(ssize_t size, dma_addr_t *dma_handle)
 {
-	struct dma_coherent_mem *mem = dev_get_coherent_memory(dev);
+	if (!dma_coherent_default_memory)
+		return NULL;
+
+	return __dma_alloc_from_coherent(dma_coherent_default_memory, size,
+			dma_handle);
+}
 
+static int __dma_release_from_coherent(struct dma_coherent_mem *mem,
+				       int order, void *vaddr)
+{
 	if (mem && vaddr >= mem->virt_base && vaddr <
 		   (mem->virt_base + (mem->size << PAGE_SHIFT))) {
 		int page = (vaddr - mem->virt_base) >> PAGE_SHIFT;
@@ -256,28 +261,39 @@ int dma_release_from_coherent(struct device *dev, int order, void *vaddr)
 	}
 	return 0;
 }
-EXPORT_SYMBOL(dma_release_from_coherent);
 
 /**
- * dma_mmap_from_coherent() - try to mmap the memory allocated from
- * per-device coherent memory pool to userspace
+ * dma_release_from_dev_coherent() - free memory to device coherent memory pool
  * @dev:	device from which the memory was allocated
- * @vma:	vm_area for the userspace memory
- * @vaddr:	cpu address returned by dma_alloc_from_coherent
- * @size:	size of the memory buffer allocated by dma_alloc_from_coherent
- * @ret:	result from remap_pfn_range()
+ * @order:	the order of pages allocated
+ * @vaddr:	virtual address of allocated pages
  *
  * This checks whether the memory was allocated from the per-device
- * coherent memory pool and if so, maps that memory to the provided vma.
+ * coherent memory pool and if so, releases that memory.
  *
- * Returns 1 if we correctly mapped the memory, or 0 if the caller should
- * proceed with mapping memory from generic pools.
+ * Returns 1 if we correctly released the memory, or 0 if the caller should
+ * proceed with releasing memory from generic pools.
  */
-int dma_mmap_from_coherent(struct device *dev, struct vm_area_struct *vma,
-			   void *vaddr, size_t size, int *ret)
+int dma_release_from_dev_coherent(struct device *dev, int order, void *vaddr)
 {
 	struct dma_coherent_mem *mem = dev_get_coherent_memory(dev);
 
+	return __dma_release_from_coherent(mem, order, vaddr);
+}
+EXPORT_SYMBOL(dma_release_from_dev_coherent);
+
+int dma_release_from_global_coherent(int order, void *vaddr)
+{
+	if (!dma_coherent_default_memory)
+		return 0;
+
+	return __dma_release_from_coherent(dma_coherent_default_memory, order,
+			vaddr);
+}
+
+static int __dma_mmap_from_coherent(struct dma_coherent_mem *mem,
+		struct vm_area_struct *vma, void *vaddr, size_t size, int *ret)
+{
 	if (mem && vaddr >= mem->virt_base && vaddr + size <=
 		   (mem->virt_base + (mem->size << PAGE_SHIFT))) {
 		unsigned long off = vma->vm_pgoff;
@@ -296,7 +312,39 @@ int dma_mmap_from_coherent(struct device *dev, struct vm_area_struct *vma,
 	}
 	return 0;
 }
-EXPORT_SYMBOL(dma_mmap_from_coherent);
+
+/**
+ * dma_mmap_from_dev_coherent() - mmap memory from the device coherent pool
+ * @dev:	device from which the memory was allocated
+ * @vma:	vm_area for the userspace memory
+ * @vaddr:	cpu address returned by dma_alloc_from_dev_coherent
+ * @size:	size of the memory buffer allocated
+ * @ret:	result from remap_pfn_range()
+ *
+ * This checks whether the memory was allocated from the per-device
+ * coherent memory pool and if so, maps that memory to the provided vma.
+ *
+ * Returns 1 if we correctly mapped the memory, or 0 if the caller should
+ * proceed with mapping memory from generic pools.
+ */
+int dma_mmap_from_dev_coherent(struct device *dev, struct vm_area_struct *vma,
+			   void *vaddr, size_t size, int *ret)
+{
+	struct dma_coherent_mem *mem = dev_get_coherent_memory(dev);
+
+	return __dma_mmap_from_coherent(mem, vma, vaddr, size, ret);
+}
+EXPORT_SYMBOL(dma_mmap_from_dev_coherent);
+
+int dma_mmap_from_global_coherent(struct vm_area_struct *vma, void *vaddr,
+				   size_t size, int *ret)
+{
+	if (!dma_coherent_default_memory)
+		return 0;
+
+	return __dma_mmap_from_coherent(dma_coherent_default_memory, vma,
+					vaddr, size, ret);
+}
 
 /*
  * Support for reserved memory regions defined in device tree
diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c
index 5096755d185e..b555ff9dd8fc 100644
--- a/drivers/base/dma-mapping.c
+++ b/drivers/base/dma-mapping.c
@@ -235,7 +235,7 @@ int dma_common_mmap(struct device *dev, struct vm_area_struct *vma,
 
 	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 
-	if (dma_mmap_from_coherent(dev, vma, cpu_addr, size, &ret))
+	if (dma_mmap_from_dev_coherent(dev, vma, cpu_addr, size, &ret))
 		return ret;
 
 	if (off < count && user_count <= (count - off)) {
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 6fd01a692197..9017dcc14502 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -2216,6 +2216,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
 #if IS_ENABLED(CONFIG_HID_ORTEK)
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_IHOME_IMAC_A210S) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
 #endif
 #if IS_ENABLED(CONFIG_HID_PANTHERLORD)
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 3d911bfd91cf..c9ba4c6db74c 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -824,6 +824,7 @@
 #define USB_VENDOR_ID_ORTEK		0x05a4
 #define USB_DEVICE_ID_ORTEK_PKB1700	0x1700
 #define USB_DEVICE_ID_ORTEK_WKB2000	0x2000
+#define USB_DEVICE_ID_ORTEK_IHOME_IMAC_A210S	0x8003
 
 #define USB_VENDOR_ID_PLANTRONICS	0x047f
 
diff --git a/drivers/hid/hid-ortek.c b/drivers/hid/hid-ortek.c
index 6620f15fec22..8783a064cdcf 100644
--- a/drivers/hid/hid-ortek.c
+++ b/drivers/hid/hid-ortek.c
@@ -5,6 +5,7 @@
  *
  *    Ortek PKB-1700
  *    Ortek WKB-2000
+ *    iHome IMAC-A210S
  *    Skycable wireless presenter
  *
  *  Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
@@ -28,10 +29,10 @@ static __u8 *ortek_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 		unsigned int *rsize)
 {
 	if (*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x01) {
-		hid_info(hdev, "Fixing up logical minimum in report descriptor (Ortek)\n");
+		hid_info(hdev, "Fixing up logical maximum in report descriptor (Ortek)\n");
 		rdesc[55] = 0x92;
 	} else if (*rsize >= 54 && rdesc[52] == 0x25 && rdesc[53] == 0x01) {
-		hid_info(hdev, "Fixing up logical minimum in report descriptor (Skycable)\n");
+		hid_info(hdev, "Fixing up logical maximum in report descriptor (Skycable)\n");
 		rdesc[53] = 0x65;
 	}
 	return rdesc;
@@ -40,6 +41,7 @@ static __u8 *ortek_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 static const struct hid_device_id ortek_devices[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_IHOME_IMAC_A210S) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
 	{ }
 };
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 76013eb5cb7f..c008847e0b20 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -680,18 +680,21 @@ static int usbhid_open(struct hid_device *hid)
 	struct usbhid_device *usbhid = hid->driver_data;
 	int res;
 
+	set_bit(HID_OPENED, &usbhid->iofl);
+
 	if (hid->quirks & HID_QUIRK_ALWAYS_POLL)
 		return 0;
 
 	res = usb_autopm_get_interface(usbhid->intf);
 	/* the device must be awake to reliably request remote wakeup */
-	if (res < 0)
+	if (res < 0) {
+		clear_bit(HID_OPENED, &usbhid->iofl);
 		return -EIO;
+	}
 
 	usbhid->intf->needs_remote_wakeup = 1;
 
 	set_bit(HID_RESUME_RUNNING, &usbhid->iofl);
-	set_bit(HID_OPENED, &usbhid->iofl);
 	set_bit(HID_IN_POLLING, &usbhid->iofl);
 
 	res = hid_start_in(hid);
@@ -727,19 +730,20 @@ static void usbhid_close(struct hid_device *hid)
 {
 	struct usbhid_device *usbhid = hid->driver_data;
 
-	if (hid->quirks & HID_QUIRK_ALWAYS_POLL)
-		return;
-
 	/*
 	 * Make sure we don't restart data acquisition due to
 	 * a resumption we no longer care about by avoiding racing
 	 * with hid_start_in().
 	 */
 	spin_lock_irq(&usbhid->lock);
-	clear_bit(HID_IN_POLLING, &usbhid->iofl);
 	clear_bit(HID_OPENED, &usbhid->iofl);
+	if (!(hid->quirks & HID_QUIRK_ALWAYS_POLL))
+		clear_bit(HID_IN_POLLING, &usbhid->iofl);
 	spin_unlock_irq(&usbhid->lock);
 
+	if (hid->quirks & HID_QUIRK_ALWAYS_POLL)
+		return;
+
 	hid_cancel_delayed_stuff(usbhid);
 	usb_kill_urb(usbhid->urbin);
 	usbhid->intf->needs_remote_wakeup = 0;
diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c
index 7e0d4f724dda..432fc40990bd 100644
--- a/drivers/s390/cio/chp.c
+++ b/drivers/s390/cio/chp.c
@@ -559,6 +559,7 @@ static void chp_process_crw(struct crw *crw0, struct crw *crw1,
 	chpid.id = crw0->rsid;
 	switch (crw0->erc) {
 	case CRW_ERC_IPARM: /* Path has come. */
+	case CRW_ERC_INIT:
 		if (!chp_is_registered(chpid))
 			chp_new(chpid);
 		chsc_chp_online(chpid);
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 8914eab84337..4f7cdb28bd38 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -938,7 +938,7 @@ static struct scsi_host_template hpsa_driver_template = {
 #endif
 	.sdev_attrs = hpsa_sdev_attrs,
 	.shost_attrs = hpsa_shost_attrs,
-	.max_sectors = 8192,
+	.max_sectors = 1024,
 	.no_write_same = 1,
 };
 
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 1e82d4128a84..4fe606b000b4 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -759,8 +759,11 @@ static bool sg_is_valid_dxfer(sg_io_hdr_t *hp)
 			return false;
 		return true;
 	case SG_DXFER_FROM_DEV:
-		if (hp->dxfer_len < 0)
-			return false;
+		/*
+		 * for SG_DXFER_FROM_DEV we always set dxfer_len to > 0. dxferp
+		 * can either be NULL or != NULL so there's no point in checking
+		 * it either. So just return true.
+		 */
 		return true;
 	case SG_DXFER_TO_DEV:
 	case SG_DXFER_TO_FROM_DEV:
diff --git a/drivers/scsi/smartpqi/smartpqi.h b/drivers/scsi/smartpqi/smartpqi.h
index 07ec8a8877de..e164ffade38a 100644
--- a/drivers/scsi/smartpqi/smartpqi.h
+++ b/drivers/scsi/smartpqi/smartpqi.h
@@ -690,7 +690,7 @@ struct pqi_config_table_heartbeat {
 
 #define PQI_MAX_OUTSTANDING_REQUESTS		((u32)~0)
 #define PQI_MAX_OUTSTANDING_REQUESTS_KDUMP	32
-#define PQI_MAX_TRANSFER_SIZE			(4 * 1024U * 1024U)
+#define PQI_MAX_TRANSFER_SIZE			(1024U * 1024U)
 #define PQI_MAX_TRANSFER_SIZE_KDUMP		(512 * 1024U)
 
 #define RAID_MAP_MAX_ENTRIES		1024
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index 40219a706309..e9391bbd4036 100644
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -30,7 +30,7 @@ static DEFINE_IDA(nvm_ida);
 
 struct nvm_auth_status {
 	struct list_head list;
-	uuid_be uuid;
+	uuid_t uuid;
 	u32 status;
 };
 
@@ -47,7 +47,7 @@ static struct nvm_auth_status *__nvm_get_auth_status(const struct tb_switch *sw)
 	struct nvm_auth_status *st;
 
 	list_for_each_entry(st, &nvm_auth_status_cache, list) {
-		if (!uuid_be_cmp(st->uuid, *sw->uuid))
+		if (uuid_equal(&st->uuid, sw->uuid))
 			return st;
 	}
 
@@ -1461,7 +1461,7 @@ struct tb_sw_lookup {
 	struct tb *tb;
 	u8 link;
 	u8 depth;
-	const uuid_be *uuid;
+	const uuid_t *uuid;
 };
 
 static int tb_switch_match(struct device *dev, void *data)
@@ -1518,7 +1518,7 @@ struct tb_switch *tb_switch_find_by_link_depth(struct tb *tb, u8 link, u8 depth)
  * Returned switch has reference count increased so the caller needs to
  * call tb_switch_put() when done with the switch.
  */
-struct tb_switch *tb_switch_find_by_uuid(struct tb *tb, const uuid_be *uuid)
+struct tb_switch *tb_switch_find_by_uuid(struct tb *tb, const uuid_t *uuid)
 {
 	struct tb_sw_lookup lookup;
 	struct device *dev;
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h
index 3d9f64676e58..e0deee4f1eb0 100644
--- a/drivers/thunderbolt/tb.h
+++ b/drivers/thunderbolt/tb.h
@@ -101,7 +101,7 @@ struct tb_switch {
 	struct tb_dma_port *dma_port;
 	struct tb *tb;
 	u64 uid;
-	uuid_be *uuid;
+	uuid_t *uuid;
 	u16 vendor;
 	u16 device;
 	const char *vendor_name;
@@ -407,7 +407,7 @@ void tb_sw_set_unplugged(struct tb_switch *sw);
 struct tb_switch *get_switch_at_route(struct tb_switch *sw, u64 route);
 struct tb_switch *tb_switch_find_by_link_depth(struct tb *tb, u8 link,
 					       u8 depth);
-struct tb_switch *tb_switch_find_by_uuid(struct tb *tb, const uuid_be *uuid);
+struct tb_switch *tb_switch_find_by_uuid(struct tb *tb, const uuid_t *uuid);
 
 static inline unsigned int tb_switch_phy_port_from_link(unsigned int link)
 {
diff --git a/drivers/thunderbolt/tb_msgs.h b/drivers/thunderbolt/tb_msgs.h
index 85b6d33c0919..de6441e4a060 100644
--- a/drivers/thunderbolt/tb_msgs.h
+++ b/drivers/thunderbolt/tb_msgs.h
@@ -179,7 +179,7 @@ struct icm_fr_pkg_get_topology_response {
 
 struct icm_fr_event_device_connected {
 	struct icm_pkg_header hdr;
-	uuid_be ep_uuid;
+	uuid_t ep_uuid;
 	u8 connection_key;
 	u8 connection_id;
 	u16 link_info;
@@ -193,7 +193,7 @@ struct icm_fr_event_device_connected {
 
 struct icm_fr_pkg_approve_device {
 	struct icm_pkg_header hdr;
-	uuid_be ep_uuid;
+	uuid_t ep_uuid;
 	u8 connection_key;
 	u8 connection_id;
 	u16 reserved;
@@ -207,7 +207,7 @@ struct icm_fr_event_device_disconnected {
 
 struct icm_fr_pkg_add_device_key {
 	struct icm_pkg_header hdr;
-	uuid_be ep_uuid;
+	uuid_t ep_uuid;
 	u8 connection_key;
 	u8 connection_id;
 	u16 reserved;
@@ -216,7 +216,7 @@ struct icm_fr_pkg_add_device_key {
 
 struct icm_fr_pkg_add_device_key_response {
 	struct icm_pkg_header hdr;
-	uuid_be ep_uuid;
+	uuid_t ep_uuid;
 	u8 connection_key;
 	u8 connection_id;
 	u16 reserved;
@@ -224,7 +224,7 @@ struct icm_fr_pkg_add_device_key_response {
 
 struct icm_fr_pkg_challenge_device {
 	struct icm_pkg_header hdr;
-	uuid_be ep_uuid;
+	uuid_t ep_uuid;
 	u8 connection_key;
 	u8 connection_id;
 	u16 reserved;
@@ -233,7 +233,7 @@ struct icm_fr_pkg_challenge_device {
 
 struct icm_fr_pkg_challenge_device_response {
 	struct icm_pkg_header hdr;
-	uuid_be ep_uuid;
+	uuid_t ep_uuid;
 	u8 connection_key;
 	u8 connection_id;
 	u16 reserved;
diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c
index 7bc186f4ed4d..2e71b6e7e646 100644
--- a/fs/jfs/acl.c
+++ b/fs/jfs/acl.c
@@ -77,13 +77,6 @@ static int __jfs_set_acl(tid_t tid, struct inode *inode, int type,
 	switch (type) {
 	case ACL_TYPE_ACCESS:
 		ea_name = XATTR_NAME_POSIX_ACL_ACCESS;
-		if (acl) {
-			rc = posix_acl_update_mode(inode, &inode->i_mode, &acl);
-			if (rc)
-				return rc;
-			inode->i_ctime = current_time(inode);
-			mark_inode_dirty(inode);
-		}
 		break;
 	case ACL_TYPE_DEFAULT:
 		ea_name = XATTR_NAME_POSIX_ACL_DEFAULT;
@@ -115,12 +108,27 @@ int jfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
 {
 	int rc;
 	tid_t tid;
+	int update_mode = 0;
+	umode_t mode = inode->i_mode;
 
 	tid = txBegin(inode->i_sb, 0);
 	mutex_lock(&JFS_IP(inode)->commit_mutex);
+	if (type == ACL_TYPE_ACCESS && acl) {
+		rc = posix_acl_update_mode(inode, &mode, &acl);
+		if (rc)
+			goto end_tx;
+		update_mode = 1;
+	}
 	rc = __jfs_set_acl(tid, inode, type, acl);
-	if (!rc)
+	if (!rc) {
+		if (update_mode) {
+			inode->i_mode = mode;
+			inode->i_ctime = current_time(inode);
+			mark_inode_dirty(inode);
+		}
 		rc = txCommit(tid, 1, &inode, 0);
+	}
+end_tx:
 	txEnd(tid);
 	mutex_unlock(&JFS_IP(inode)->commit_mutex);
 	return rc;
diff --git a/fs/jfs/resize.c b/fs/jfs/resize.c
index bd9b641ada2c..7ddcb445a3d9 100644
--- a/fs/jfs/resize.c
+++ b/fs/jfs/resize.c
@@ -98,7 +98,7 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
 		goto out;
 	}
 
-	VolumeSize = sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits;
+	VolumeSize = i_size_read(sb->s_bdev->bd_inode) >> sb->s_blocksize_bits;
 
 	if (VolumeSize) {
 		if (newLVSize > VolumeSize) {
@@ -211,7 +211,7 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
 	txQuiesce(sb);
 
 	/* Reset size of direct inode */
-	sbi->direct_inode->i_size =  sb->s_bdev->bd_inode->i_size;
+	sbi->direct_inode->i_size =  i_size_read(sb->s_bdev->bd_inode);
 
 	if (sbi->mntflag & JFS_INLINELOG) {
 		/*
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index e8aad7d87b8c..78b41e1d5c67 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -313,7 +313,7 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize,
 		}
 		case Opt_resize_nosize:
 		{
-			*newLVSize = sb->s_bdev->bd_inode->i_size >>
+			*newLVSize = i_size_read(sb->s_bdev->bd_inode) >>
 				sb->s_blocksize_bits;
 			if (*newLVSize == 0)
 				pr_err("JFS: Cannot determine volume size\n");
@@ -579,7 +579,7 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
 		goto out_unload;
 	}
 	inode->i_ino = 0;
-	inode->i_size = sb->s_bdev->bd_inode->i_size;
+	inode->i_size = i_size_read(sb->s_bdev->bd_inode);
 	inode->i_mapping->a_ops = &jfs_metapage_aops;
 	hlist_add_fake(&inode->i_hash);
 	mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 843ab866e0f4..03c0196a6f24 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -157,16 +157,40 @@ static inline int is_device_dma_capable(struct device *dev)
  * These three functions are only for dma allocator.
  * Don't use them in device drivers.
  */
-int dma_alloc_from_coherent(struct device *dev, ssize_t size,
+int dma_alloc_from_dev_coherent(struct device *dev, ssize_t size,
 				       dma_addr_t *dma_handle, void **ret);
-int dma_release_from_coherent(struct device *dev, int order, void *vaddr);
+int dma_release_from_dev_coherent(struct device *dev, int order, void *vaddr);
 
-int dma_mmap_from_coherent(struct device *dev, struct vm_area_struct *vma,
+int dma_mmap_from_dev_coherent(struct device *dev, struct vm_area_struct *vma,
 			    void *cpu_addr, size_t size, int *ret);
+
+void *dma_alloc_from_global_coherent(ssize_t size, dma_addr_t *dma_handle);
+int dma_release_from_global_coherent(int order, void *vaddr);
+int dma_mmap_from_global_coherent(struct vm_area_struct *vma, void *cpu_addr,
+				  size_t size, int *ret);
+
 #else
-#define dma_alloc_from_coherent(dev, size, handle, ret) (0)
-#define dma_release_from_coherent(dev, order, vaddr) (0)
-#define dma_mmap_from_coherent(dev, vma, vaddr, order, ret) (0)
+#define dma_alloc_from_dev_coherent(dev, size, handle, ret) (0)
+#define dma_release_from_dev_coherent(dev, order, vaddr) (0)
+#define dma_mmap_from_dev_coherent(dev, vma, vaddr, order, ret) (0)
+
+static inline void *dma_alloc_from_global_coherent(ssize_t size,
+						   dma_addr_t *dma_handle)
+{
+	return NULL;
+}
+
+static inline int dma_release_from_global_coherent(int order, void *vaddr)
+{
+	return 0;
+}
+
+static inline int dma_mmap_from_global_coherent(struct vm_area_struct *vma,
+						void *cpu_addr, size_t size,
+						int *ret)
+{
+	return 0;
+}
 #endif /* CONFIG_HAVE_GENERIC_DMA_COHERENT */
 
 #ifdef CONFIG_HAS_DMA
@@ -481,7 +505,7 @@ static inline void *dma_alloc_attrs(struct device *dev, size_t size,
 
 	BUG_ON(!ops);
 
-	if (dma_alloc_from_coherent(dev, size, dma_handle, &cpu_addr))
+	if (dma_alloc_from_dev_coherent(dev, size, dma_handle, &cpu_addr))
 		return cpu_addr;
 
 	if (!arch_dma_alloc_attrs(&dev, &flag))
@@ -503,7 +527,7 @@ static inline void dma_free_attrs(struct device *dev, size_t size,
 	BUG_ON(!ops);
 	WARN_ON(irqs_disabled());
 
-	if (dma_release_from_coherent(dev, get_order(size), cpu_addr))
+	if (dma_release_from_dev_coherent(dev, get_order(size), cpu_addr))
 		return;
 
 	if (!ops->free || !cpu_addr)
diff --git a/include/linux/uuid.h b/include/linux/uuid.h
index 2251e1925ea4..33b0bdbb613c 100644
--- a/include/linux/uuid.h
+++ b/include/linux/uuid.h
@@ -84,26 +84,12 @@ int guid_parse(const char *uuid, guid_t *u);
 int uuid_parse(const char *uuid, uuid_t *u);
 
 /* backwards compatibility, don't use in new code */
-typedef uuid_t uuid_be;
-#define UUID_BE(a, _b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
-	UUID_INIT(a, _b, c, d0, d1, d2, d3, d4, d5, d6, d7)
-#define NULL_UUID_BE 							\
-	UUID_BE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00,	\
-	     0x00, 0x00, 0x00, 0x00)
-
 #define uuid_le_gen(u)		guid_gen(u)
-#define uuid_be_gen(u)		uuid_gen(u)
 #define uuid_le_to_bin(guid, u)	guid_parse(guid, u)
-#define uuid_be_to_bin(uuid, u)	uuid_parse(uuid, u)
 
 static inline int uuid_le_cmp(const guid_t u1, const guid_t u2)
 {
 	return memcmp(&u1, &u2, sizeof(guid_t));
 }
 
-static inline int uuid_be_cmp(const uuid_t u1, const uuid_t u2)
-{
-	return memcmp(&u1, &u2, sizeof(uuid_t));
-}
-
 #endif
diff --git a/lib/test_uuid.c b/lib/test_uuid.c
index 478c049630b5..cd819c397dc7 100644
--- a/lib/test_uuid.c
+++ b/lib/test_uuid.c
@@ -82,7 +82,7 @@ static void __init test_uuid_test(const struct test_uuid_data *data)
 		test_uuid_failed("conversion", false, true, data->uuid, NULL);
 
 	total_tests++;
-	if (uuid_equal(&data->be, &be)) {
+	if (!uuid_equal(&data->be, &be)) {
 		sprintf(buf, "%pUb", &be);
 		test_uuid_failed("cmp", false, true, data->uuid, buf);
 	}