9 files changed, 21 insertions, 1033 deletions

diff --git a/arch/arm/common/Kconfig b/arch/arm/common/Kconfig
index c8e198631d41..d2fdb1796f48 100644
--- a/arch/arm/common/Kconfig
+++ b/arch/arm/common/Kconfig
@@ -1,11 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 config SA1111
 	bool
-	select DMABOUNCE if !ARCH_PXA
-
-config DMABOUNCE
-	bool
-	select ZONE_DMA
+	select ZONE_DMA if ARCH_SA1100
 
 config KRAIT_L2_ACCESSORS
 	bool
diff --git a/arch/arm/common/Makefile b/arch/arm/common/Makefile
index 219a260bbe5f..7bae8cbaafe7 100644
--- a/arch/arm/common/Makefile
+++ b/arch/arm/common/Makefile
@@ -6,13 +6,11 @@
 obj-y				+= firmware.o
 
 obj-$(CONFIG_SA1111)		+= sa1111.o
-obj-$(CONFIG_DMABOUNCE)		+= dmabounce.o
 obj-$(CONFIG_KRAIT_L2_ACCESSORS) += krait-l2-accessors.o
 obj-$(CONFIG_SHARP_LOCOMO)	+= locomo.o
 obj-$(CONFIG_SHARP_PARAM)	+= sharpsl_param.o
 obj-$(CONFIG_SHARP_SCOOP)	+= scoop.o
 obj-$(CONFIG_CPU_V7)		+= secure_cntvoff.o
-obj-$(CONFIG_PCI_HOST_ITE8152)  += it8152.o
 obj-$(CONFIG_MCPM)		+= mcpm_head.o mcpm_entry.o mcpm_platsmp.o vlock.o
 CFLAGS_REMOVE_mcpm_entry.o	= -pg
 AFLAGS_mcpm_head.o		:= -march=armv7-a
diff --git a/arch/arm/common/bL_switcher.c b/arch/arm/common/bL_switcher.c
index 746e1fce777e..9a9aa53547a6 100644
--- a/arch/arm/common/bL_switcher.c
+++ b/arch/arm/common/bL_switcher.c
@@ -270,12 +270,11 @@ static struct bL_thread bL_threads[NR_CPUS];
 static int bL_switcher_thread(void *arg)
 {
 	struct bL_thread *t = arg;
-	struct sched_param param = { .sched_priority = 1 };
 	int cluster;
 	bL_switch_completion_handler completer;
 	void *completer_cookie;
 
-	sched_setscheduler_nocheck(current, SCHED_FIFO, &param);
+	sched_set_fifo_low(current);
 	complete(&t->started);
 
 	do {
diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c
deleted file mode 100644
index f4b719bde763..000000000000
--- a/arch/arm/common/dmabounce.c
+++ /dev/null
@@ -1,581 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- *  arch/arm/common/dmabounce.c
- *
- *  Special dma_{map/unmap/dma_sync}_* routines for systems that have
- *  limited DMA windows. These functions utilize bounce buffers to
- *  copy data to/from buffers located outside the DMA region. This
- *  only works for systems in which DMA memory is at the bottom of
- *  RAM, the remainder of memory is at the top and the DMA memory
- *  can be marked as ZONE_DMA. Anything beyond that such as discontiguous
- *  DMA windows will require custom implementations that reserve memory
- *  areas at early bootup.
- *
- *  Original version by Brad Parker (brad@heeltoe.com)
- *  Re-written by Christopher Hoover <ch@murgatroid.com>
- *  Made generic by Deepak Saxena <dsaxena@plexity.net>
- *
- *  Copyright (C) 2002 Hewlett Packard Company.
- *  Copyright (C) 2004 MontaVista Software, Inc.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/page-flags.h>
-#include <linux/device.h>
-#include <linux/dma-mapping.h>
-#include <linux/dmapool.h>
-#include <linux/list.h>
-#include <linux/scatterlist.h>
-
-#include <asm/cacheflush.h>
-#include <asm/dma-iommu.h>
-
-#undef STATS
-
-#ifdef STATS
-#define DO_STATS(X) do { X ; } while (0)
-#else
-#define DO_STATS(X) do { } while (0)
-#endif
-
-/* ************************************************** */
-
-struct safe_buffer {
-	struct list_head node;
-
-	/* original request */
-	void		*ptr;
-	size_t		size;
-	int		direction;
-
-	/* safe buffer info */
-	struct dmabounce_pool *pool;
-	void		*safe;
-	dma_addr_t	safe_dma_addr;
-};
-
-struct dmabounce_pool {
-	unsigned long	size;
-	struct dma_pool	*pool;
-#ifdef STATS
-	unsigned long	allocs;
-#endif
-};
-
-struct dmabounce_device_info {
-	struct device *dev;
-	struct list_head safe_buffers;
-#ifdef STATS
-	unsigned long total_allocs;
-	unsigned long map_op_count;
-	unsigned long bounce_count;
-	int attr_res;
-#endif
-	struct dmabounce_pool	small;
-	struct dmabounce_pool	large;
-
-	rwlock_t lock;
-
-	int (*needs_bounce)(struct device *, dma_addr_t, size_t);
-};
-
-#ifdef STATS
-static ssize_t dmabounce_show(struct device *dev, struct device_attribute *attr,
-			      char *buf)
-{
-	struct dmabounce_device_info *device_info = dev->archdata.dmabounce;
-	return sprintf(buf, "%lu %lu %lu %lu %lu %lu\n",
-		device_info->small.allocs,
-		device_info->large.allocs,
-		device_info->total_allocs - device_info->small.allocs -
-			device_info->large.allocs,
-		device_info->total_allocs,
-		device_info->map_op_count,
-		device_info->bounce_count);
-}
-
-static DEVICE_ATTR(dmabounce_stats, 0400, dmabounce_show, NULL);
-#endif
-
-
-/* allocate a 'safe' buffer and keep track of it */
-static inline struct safe_buffer *
-alloc_safe_buffer(struct dmabounce_device_info *device_info, void *ptr,
-		  size_t size, enum dma_data_direction dir)
-{
-	struct safe_buffer *buf;
-	struct dmabounce_pool *pool;
-	struct device *dev = device_info->dev;
-	unsigned long flags;
-
-	dev_dbg(dev, "%s(ptr=%p, size=%d, dir=%d)\n",
-		__func__, ptr, size, dir);
-
-	if (size <= device_info->small.size) {
-		pool = &device_info->small;
-	} else if (size <= device_info->large.size) {
-		pool = &device_info->large;
-	} else {
-		pool = NULL;
-	}
-
-	buf = kmalloc(sizeof(struct safe_buffer), GFP_ATOMIC);
-	if (buf == NULL) {
-		dev_warn(dev, "%s: kmalloc failed\n", __func__);
-		return NULL;
-	}
-
-	buf->ptr = ptr;
-	buf->size = size;
-	buf->direction = dir;
-	buf->pool = pool;
-
-	if (pool) {
-		buf->safe = dma_pool_alloc(pool->pool, GFP_ATOMIC,
-					   &buf->safe_dma_addr);
-	} else {
-		buf->safe = dma_alloc_coherent(dev, size, &buf->safe_dma_addr,
-					       GFP_ATOMIC);
-	}
-
-	if (buf->safe == NULL) {
-		dev_warn(dev,
-			 "%s: could not alloc dma memory (size=%d)\n",
-			 __func__, size);
-		kfree(buf);
-		return NULL;
-	}
-
-#ifdef STATS
-	if (pool)
-		pool->allocs++;
-	device_info->total_allocs++;
-#endif
-
-	write_lock_irqsave(&device_info->lock, flags);
-	list_add(&buf->node, &device_info->safe_buffers);
-	write_unlock_irqrestore(&device_info->lock, flags);
-
-	return buf;
-}
-
-/* determine if a buffer is from our "safe" pool */
-static inline struct safe_buffer *
-find_safe_buffer(struct dmabounce_device_info *device_info, dma_addr_t safe_dma_addr)
-{
-	struct safe_buffer *b, *rb = NULL;
-	unsigned long flags;
-
-	read_lock_irqsave(&device_info->lock, flags);
-
-	list_for_each_entry(b, &device_info->safe_buffers, node)
-		if (b->safe_dma_addr <= safe_dma_addr &&
-		    b->safe_dma_addr + b->size > safe_dma_addr) {
-			rb = b;
-			break;
-		}
-
-	read_unlock_irqrestore(&device_info->lock, flags);
-	return rb;
-}
-
-static inline void
-free_safe_buffer(struct dmabounce_device_info *device_info, struct safe_buffer *buf)
-{
-	unsigned long flags;
-
-	dev_dbg(device_info->dev, "%s(buf=%p)\n", __func__, buf);
-
-	write_lock_irqsave(&device_info->lock, flags);
-
-	list_del(&buf->node);
-
-	write_unlock_irqrestore(&device_info->lock, flags);
-
-	if (buf->pool)
-		dma_pool_free(buf->pool->pool, buf->safe, buf->safe_dma_addr);
-	else
-		dma_free_coherent(device_info->dev, buf->size, buf->safe,
-				    buf->safe_dma_addr);
-
-	kfree(buf);
-}
-
-/* ************************************************** */
-
-static struct safe_buffer *find_safe_buffer_dev(struct device *dev,
-		dma_addr_t dma_addr, const char *where)
-{
-	if (!dev || !dev->archdata.dmabounce)
-		return NULL;
-	if (dma_mapping_error(dev, dma_addr)) {
-		dev_err(dev, "Trying to %s invalid mapping\n", where);
-		return NULL;
-	}
-	return find_safe_buffer(dev->archdata.dmabounce, dma_addr);
-}
-
-static int needs_bounce(struct device *dev, dma_addr_t dma_addr, size_t size)
-{
-	if (!dev || !dev->archdata.dmabounce)
-		return 0;
-
-	if (dev->dma_mask) {
-		unsigned long limit, mask = *dev->dma_mask;
-
-		limit = (mask + 1) & ~mask;
-		if (limit && size > limit) {
-			dev_err(dev, "DMA mapping too big (requested %#x "
-				"mask %#Lx)\n", size, *dev->dma_mask);
-			return -E2BIG;
-		}
-
-		/* Figure out if we need to bounce from the DMA mask. */
-		if ((dma_addr | (dma_addr + size - 1)) & ~mask)
-			return 1;
-	}
-
-	return !!dev->archdata.dmabounce->needs_bounce(dev, dma_addr, size);
-}
-
-static inline dma_addr_t map_single(struct device *dev, void *ptr, size_t size,
-				    enum dma_data_direction dir,
-				    unsigned long attrs)
-{
-	struct dmabounce_device_info *device_info = dev->archdata.dmabounce;
-	struct safe_buffer *buf;
-
-	if (device_info)
-		DO_STATS ( device_info->map_op_count++ );
-
-	buf = alloc_safe_buffer(device_info, ptr, size, dir);
-	if (buf == NULL) {
-		dev_err(dev, "%s: unable to map unsafe buffer %p!\n",
-		       __func__, ptr);
-		return DMA_MAPPING_ERROR;
-	}
-
-	dev_dbg(dev, "%s: unsafe buffer %p (dma=%#x) mapped to %p (dma=%#x)\n",
-		__func__, buf->ptr, virt_to_dma(dev, buf->ptr),
-		buf->safe, buf->safe_dma_addr);
-
-	if ((dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL) &&
-	    !(attrs & DMA_ATTR_SKIP_CPU_SYNC)) {
-		dev_dbg(dev, "%s: copy unsafe %p to safe %p, size %d\n",
-			__func__, ptr, buf->safe, size);
-		memcpy(buf->safe, ptr, size);
-	}
-
-	return buf->safe_dma_addr;
-}
-
-static inline void unmap_single(struct device *dev, struct safe_buffer *buf,
-				size_t size, enum dma_data_direction dir,
-				unsigned long attrs)
-{
-	BUG_ON(buf->size != size);
-	BUG_ON(buf->direction != dir);
-
-	dev_dbg(dev, "%s: unsafe buffer %p (dma=%#x) mapped to %p (dma=%#x)\n",
-		__func__, buf->ptr, virt_to_dma(dev, buf->ptr),
-		buf->safe, buf->safe_dma_addr);
-
-	DO_STATS(dev->archdata.dmabounce->bounce_count++);
-
-	if ((dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL) &&
-	    !(attrs & DMA_ATTR_SKIP_CPU_SYNC)) {
-		void *ptr = buf->ptr;
-
-		dev_dbg(dev, "%s: copy back safe %p to unsafe %p size %d\n",
-			__func__, buf->safe, ptr, size);
-		memcpy(ptr, buf->safe, size);
-
-		/*
-		 * Since we may have written to a page cache page,
-		 * we need to ensure that the data will be coherent
-		 * with user mappings.
-		 */
-		__cpuc_flush_dcache_area(ptr, size);
-	}
-	free_safe_buffer(dev->archdata.dmabounce, buf);
-}
-
-/* ************************************************** */
-
-/*
- * see if a buffer address is in an 'unsafe' range.  if it is
- * allocate a 'safe' buffer and copy the unsafe buffer into it.
- * substitute the safe buffer for the unsafe one.
- * (basically move the buffer from an unsafe area to a safe one)
- */
-static dma_addr_t dmabounce_map_page(struct device *dev, struct page *page,
-		unsigned long offset, size_t size, enum dma_data_direction dir,
-		unsigned long attrs)
-{
-	dma_addr_t dma_addr;
-	int ret;
-
-	dev_dbg(dev, "%s(page=%p,off=%#lx,size=%zx,dir=%x)\n",
-		__func__, page, offset, size, dir);
-
-	dma_addr = pfn_to_dma(dev, page_to_pfn(page)) + offset;
-
-	ret = needs_bounce(dev, dma_addr, size);
-	if (ret < 0)
-		return DMA_MAPPING_ERROR;
-
-	if (ret == 0) {
-		arm_dma_ops.sync_single_for_device(dev, dma_addr, size, dir);
-		return dma_addr;
-	}
-
-	if (PageHighMem(page)) {
-		dev_err(dev, "DMA buffer bouncing of HIGHMEM pages is not supported\n");
-		return DMA_MAPPING_ERROR;
-	}
-
-	return map_single(dev, page_address(page) + offset, size, dir, attrs);
-}
-
-/*
- * see if a mapped address was really a "safe" buffer and if so, copy
- * the data from the safe buffer back to the unsafe buffer and free up
- * the safe buffer.  (basically return things back to the way they
- * should be)
- */
-static void dmabounce_unmap_page(struct device *dev, dma_addr_t dma_addr, size_t size,
-		enum dma_data_direction dir, unsigned long attrs)
-{
-	struct safe_buffer *buf;
-
-	dev_dbg(dev, "%s(dma=%#x,size=%d,dir=%x)\n",
-		__func__, dma_addr, size, dir);
-
-	buf = find_safe_buffer_dev(dev, dma_addr, __func__);
-	if (!buf) {
-		arm_dma_ops.sync_single_for_cpu(dev, dma_addr, size, dir);
-		return;
-	}
-
-	unmap_single(dev, buf, size, dir, attrs);
-}
-
-static int __dmabounce_sync_for_cpu(struct device *dev, dma_addr_t addr,
-		size_t sz, enum dma_data_direction dir)
-{
-	struct safe_buffer *buf;
-	unsigned long off;
-
-	dev_dbg(dev, "%s(dma=%#x,sz=%zx,dir=%x)\n",
-		__func__, addr, sz, dir);
-
-	buf = find_safe_buffer_dev(dev, addr, __func__);
-	if (!buf)
-		return 1;
-
-	off = addr - buf->safe_dma_addr;
-
-	BUG_ON(buf->direction != dir);
-
-	dev_dbg(dev, "%s: unsafe buffer %p (dma=%#x off=%#lx) mapped to %p (dma=%#x)\n",
-		__func__, buf->ptr, virt_to_dma(dev, buf->ptr), off,
-		buf->safe, buf->safe_dma_addr);
-
-	DO_STATS(dev->archdata.dmabounce->bounce_count++);
-
-	if (dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL) {
-		dev_dbg(dev, "%s: copy back safe %p to unsafe %p size %d\n",
-			__func__, buf->safe + off, buf->ptr + off, sz);
-		memcpy(buf->ptr + off, buf->safe + off, sz);
-	}
-	return 0;
-}
-
-static void dmabounce_sync_for_cpu(struct device *dev,
-		dma_addr_t handle, size_t size, enum dma_data_direction dir)
-{
-	if (!__dmabounce_sync_for_cpu(dev, handle, size, dir))
-		return;
-
-	arm_dma_ops.sync_single_for_cpu(dev, handle, size, dir);
-}
-
-static int __dmabounce_sync_for_device(struct device *dev, dma_addr_t addr,
-		size_t sz, enum dma_data_direction dir)
-{
-	struct safe_buffer *buf;
-	unsigned long off;
-
-	dev_dbg(dev, "%s(dma=%#x,sz=%zx,dir=%x)\n",
-		__func__, addr, sz, dir);
-
-	buf = find_safe_buffer_dev(dev, addr, __func__);
-	if (!buf)
-		return 1;
-
-	off = addr - buf->safe_dma_addr;
-
-	BUG_ON(buf->direction != dir);
-
-	dev_dbg(dev, "%s: unsafe buffer %p (dma=%#x off=%#lx) mapped to %p (dma=%#x)\n",
-		__func__, buf->ptr, virt_to_dma(dev, buf->ptr), off,
-		buf->safe, buf->safe_dma_addr);
-
-	DO_STATS(dev->archdata.dmabounce->bounce_count++);
-
-	if (dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL) {
-		dev_dbg(dev, "%s: copy out unsafe %p to safe %p, size %d\n",
-			__func__,buf->ptr + off, buf->safe + off, sz);
-		memcpy(buf->safe + off, buf->ptr + off, sz);
-	}
-	return 0;
-}
-
-static void dmabounce_sync_for_device(struct device *dev,
-		dma_addr_t handle, size_t size, enum dma_data_direction dir)
-{
-	if (!__dmabounce_sync_for_device(dev, handle, size, dir))
-		return;
-
-	arm_dma_ops.sync_single_for_device(dev, handle, size, dir);
-}
-
-static int dmabounce_dma_supported(struct device *dev, u64 dma_mask)
-{
-	if (dev->archdata.dmabounce)
-		return 0;
-
-	return arm_dma_ops.dma_supported(dev, dma_mask);
-}
-
-static const struct dma_map_ops dmabounce_ops = {
-	.alloc			= arm_dma_alloc,
-	.free			= arm_dma_free,
-	.mmap			= arm_dma_mmap,
-	.get_sgtable		= arm_dma_get_sgtable,
-	.map_page		= dmabounce_map_page,
-	.unmap_page		= dmabounce_unmap_page,
-	.sync_single_for_cpu	= dmabounce_sync_for_cpu,
-	.sync_single_for_device	= dmabounce_sync_for_device,
-	.map_sg			= arm_dma_map_sg,
-	.unmap_sg		= arm_dma_unmap_sg,
-	.sync_sg_for_cpu	= arm_dma_sync_sg_for_cpu,
-	.sync_sg_for_device	= arm_dma_sync_sg_for_device,
-	.dma_supported		= dmabounce_dma_supported,
-};
-
-static int dmabounce_init_pool(struct dmabounce_pool *pool, struct device *dev,
-		const char *name, unsigned long size)
-{
-	pool->size = size;
-	DO_STATS(pool->allocs = 0);
-	pool->pool = dma_pool_create(name, dev, size,
-				     0 /* byte alignment */,
-				     0 /* no page-crossing issues */);
-
-	return pool->pool ? 0 : -ENOMEM;
-}
-
-int dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size,
-		unsigned long large_buffer_size,
-		int (*needs_bounce_fn)(struct device *, dma_addr_t, size_t))
-{
-	struct dmabounce_device_info *device_info;
-	int ret;
-
-	device_info = kmalloc(sizeof(struct dmabounce_device_info), GFP_ATOMIC);
-	if (!device_info) {
-		dev_err(dev,
-			"Could not allocated dmabounce_device_info\n");
-		return -ENOMEM;
-	}
-
-	ret = dmabounce_init_pool(&device_info->small, dev,
-				  "small_dmabounce_pool", small_buffer_size);
-	if (ret) {
-		dev_err(dev,
-			"dmabounce: could not allocate DMA pool for %ld byte objects\n",
-			small_buffer_size);
-		goto err_free;
-	}
-
-	if (large_buffer_size) {
-		ret = dmabounce_init_pool(&device_info->large, dev,
-					  "large_dmabounce_pool",
-					  large_buffer_size);
-		if (ret) {
-			dev_err(dev,
-				"dmabounce: could not allocate DMA pool for %ld byte objects\n",
-				large_buffer_size);
-			goto err_destroy;
-		}
-	}
-
-	device_info->dev = dev;
-	INIT_LIST_HEAD(&device_info->safe_buffers);
-	rwlock_init(&device_info->lock);
-	device_info->needs_bounce = needs_bounce_fn;
-
-#ifdef STATS
-	device_info->total_allocs = 0;
-	device_info->map_op_count = 0;
-	device_info->bounce_count = 0;
-	device_info->attr_res = device_create_file(dev, &dev_attr_dmabounce_stats);
-#endif
-
-	dev->archdata.dmabounce = device_info;
-	set_dma_ops(dev, &dmabounce_ops);
-
-	dev_info(dev, "dmabounce: registered device\n");
-
-	return 0;
-
- err_destroy:
-	dma_pool_destroy(device_info->small.pool);
- err_free:
-	kfree(device_info);
-	return ret;
-}
-EXPORT_SYMBOL(dmabounce_register_dev);
-
-void dmabounce_unregister_dev(struct device *dev)
-{
-	struct dmabounce_device_info *device_info = dev->archdata.dmabounce;
-
-	dev->archdata.dmabounce = NULL;
-	set_dma_ops(dev, NULL);
-
-	if (!device_info) {
-		dev_warn(dev,
-			 "Never registered with dmabounce but attempting"
-			 "to unregister!\n");
-		return;
-	}
-
-	if (!list_empty(&device_info->safe_buffers)) {
-		dev_err(dev,
-			"Removing from dmabounce with pending buffers!\n");
-		BUG();
-	}
-
-	if (device_info->small.pool)
-		dma_pool_destroy(device_info->small.pool);
-	if (device_info->large.pool)
-		dma_pool_destroy(device_info->large.pool);
-
-#ifdef STATS
-	if (device_info->attr_res == 0)
-		device_remove_file(dev, &dev_attr_dmabounce_stats);
-#endif
-
-	kfree(device_info);
-
-	dev_info(dev, "dmabounce: device unregistered\n");
-}
-EXPORT_SYMBOL(dmabounce_unregister_dev);
-
-MODULE_AUTHOR("Christopher Hoover <ch@hpl.hp.com>, Deepak Saxena <dsaxena@plexity.net>");
-MODULE_DESCRIPTION("Special dma_{map/unmap/dma_sync}_* routines for systems with limited DMA windows");
-MODULE_LICENSE("GPL");
diff --git a/arch/arm/common/it8152.c b/arch/arm/common/it8152.c
deleted file mode 100644
index 9ec740cac469..000000000000
--- a/arch/arm/common/it8152.c
+++ /dev/null
@@ -1,352 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * linux/arch/arm/common/it8152.c
- *
- * Copyright Compulab Ltd, 2002-2007
- * Mike Rapoport <mike@compulab.co.il>
- *
- * The DMA bouncing part is taken from arch/arm/mach-ixp4xx/common-pci.c
- * (see this file for respective copyrights)
- *
- * Thanks to Guennadi Liakhovetski <gl@dsa-ac.de> for IRQ enumberation
- * and demux code.
- */
-
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/ptrace.h>
-#include <linux/interrupt.h>
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-#include <linux/export.h>
-
-#include <asm/mach/pci.h>
-#include <asm/hardware/it8152.h>
-
-#define MAX_SLOTS		21
-
-static void it8152_mask_irq(struct irq_data *d)
-{
-	unsigned int irq = d->irq;
-
-       if (irq >= IT8152_LD_IRQ(0)) {
-	       __raw_writel((__raw_readl(IT8152_INTC_LDCNIMR) |
-			    (1 << (irq - IT8152_LD_IRQ(0)))),
-			    IT8152_INTC_LDCNIMR);
-       } else if (irq >= IT8152_LP_IRQ(0)) {
-	       __raw_writel((__raw_readl(IT8152_INTC_LPCNIMR) |
-			    (1 << (irq - IT8152_LP_IRQ(0)))),
-			    IT8152_INTC_LPCNIMR);
-       } else if (irq >= IT8152_PD_IRQ(0)) {
-	       __raw_writel((__raw_readl(IT8152_INTC_PDCNIMR) |
-			    (1 << (irq - IT8152_PD_IRQ(0)))),
-			    IT8152_INTC_PDCNIMR);
-       }
-}
-
-static void it8152_unmask_irq(struct irq_data *d)
-{
-	unsigned int irq = d->irq;
-
-       if (irq >= IT8152_LD_IRQ(0)) {
-	       __raw_writel((__raw_readl(IT8152_INTC_LDCNIMR) &
-			     ~(1 << (irq - IT8152_LD_IRQ(0)))),
-			    IT8152_INTC_LDCNIMR);
-       } else if (irq >= IT8152_LP_IRQ(0)) {
-	       __raw_writel((__raw_readl(IT8152_INTC_LPCNIMR) &
-			     ~(1 << (irq - IT8152_LP_IRQ(0)))),
-			    IT8152_INTC_LPCNIMR);
-       } else if (irq >= IT8152_PD_IRQ(0)) {
-	       __raw_writel((__raw_readl(IT8152_INTC_PDCNIMR) &
-			     ~(1 << (irq - IT8152_PD_IRQ(0)))),
-			    IT8152_INTC_PDCNIMR);
-       }
-}
-
-static struct irq_chip it8152_irq_chip = {
-	.name		= "it8152",
-	.irq_ack	= it8152_mask_irq,
-	.irq_mask	= it8152_mask_irq,
-	.irq_unmask	= it8152_unmask_irq,
-};
-
-void it8152_init_irq(void)
-{
-	int irq;
-
-	__raw_writel((0xffff), IT8152_INTC_PDCNIMR);
-	__raw_writel((0), IT8152_INTC_PDCNIRR);
-	__raw_writel((0xffff), IT8152_INTC_LPCNIMR);
-	__raw_writel((0), IT8152_INTC_LPCNIRR);
-	__raw_writel((0xffff), IT8152_INTC_LDCNIMR);
-	__raw_writel((0), IT8152_INTC_LDCNIRR);
-
-	for (irq = IT8152_IRQ(0); irq <= IT8152_LAST_IRQ; irq++) {
-		irq_set_chip_and_handler(irq, &it8152_irq_chip,
-					 handle_level_irq);
-		irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE);
-	}
-}
-
-void it8152_irq_demux(struct irq_desc *desc)
-{
-       int bits_pd, bits_lp, bits_ld;
-       int i;
-
-       while (1) {
-	       /* Read all */
-	       bits_pd = __raw_readl(IT8152_INTC_PDCNIRR);
-	       bits_lp = __raw_readl(IT8152_INTC_LPCNIRR);
-	       bits_ld = __raw_readl(IT8152_INTC_LDCNIRR);
-
-	       /* Ack */
-	       __raw_writel((~bits_pd), IT8152_INTC_PDCNIRR);
-	       __raw_writel((~bits_lp), IT8152_INTC_LPCNIRR);
-	       __raw_writel((~bits_ld), IT8152_INTC_LDCNIRR);
-
-	       if (!(bits_ld | bits_lp | bits_pd)) {
-		       /* Re-read to guarantee, that there was a moment of
-			  time, when they all three were 0. */
-		       bits_pd = __raw_readl(IT8152_INTC_PDCNIRR);
-		       bits_lp = __raw_readl(IT8152_INTC_LPCNIRR);
-		       bits_ld = __raw_readl(IT8152_INTC_LDCNIRR);
-		       if (!(bits_ld | bits_lp | bits_pd))
-			       return;
-	       }
-
-	       bits_pd &= ((1 << IT8152_PD_IRQ_COUNT) - 1);
-	       while (bits_pd) {
-		       i = __ffs(bits_pd);
-		       generic_handle_irq(IT8152_PD_IRQ(i));
-		       bits_pd &= ~(1 << i);
-	       }
-
-	       bits_lp &= ((1 << IT8152_LP_IRQ_COUNT) - 1);
-	       while (bits_lp) {
-		       i = __ffs(bits_lp);
-		       generic_handle_irq(IT8152_LP_IRQ(i));
-		       bits_lp &= ~(1 << i);
-	       }
-
-	       bits_ld &= ((1 << IT8152_LD_IRQ_COUNT) - 1);
-	       while (bits_ld) {
-		       i = __ffs(bits_ld);
-		       generic_handle_irq(IT8152_LD_IRQ(i));
-		       bits_ld &= ~(1 << i);
-	       }
-       }
-}
-
-/* mapping for on-chip devices */
-int __init it8152_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
-{
-	if ((dev->vendor == PCI_VENDOR_ID_ITE) &&
-	    (dev->device == PCI_DEVICE_ID_ITE_8152)) {
-		if ((dev->class >> 8) == PCI_CLASS_MULTIMEDIA_AUDIO)
-			return IT8152_AUDIO_INT;
-		if ((dev->class >> 8) == PCI_CLASS_SERIAL_USB)
-			return IT8152_USB_INT;
-		if ((dev->class >> 8) == PCI_CLASS_SYSTEM_DMA)
-			return IT8152_CDMA_INT;
-	}
-
-	return 0;
-}
-
-static unsigned long it8152_pci_dev_base_address(struct pci_bus *bus,
-						 unsigned int devfn)
-{
-	unsigned long addr = 0;
-
-	if (bus->number == 0) {
-			if (devfn < PCI_DEVFN(MAX_SLOTS, 0))
-				addr = (devfn << 8);
-	} else
-		addr = (bus->number << 16) | (devfn << 8);
-
-	return addr;
-}
-
-static int it8152_pci_read_config(struct pci_bus *bus,
-				  unsigned int devfn, int where,
-				  int size, u32 *value)
-{
-	unsigned long addr = it8152_pci_dev_base_address(bus, devfn);
-	u32 v;
-	int shift;
-
-	shift = (where & 3);
-
-	__raw_writel((addr + where), IT8152_PCI_CFG_ADDR);
-	v = (__raw_readl(IT8152_PCI_CFG_DATA)  >> (8 * (shift)));
-
-	*value = v;
-
-	return PCIBIOS_SUCCESSFUL;
-}
-
-static int it8152_pci_write_config(struct pci_bus *bus,
-				   unsigned int devfn, int where,
-				   int size, u32 value)
-{
-	unsigned long addr = it8152_pci_dev_base_address(bus, devfn);
-	u32 v, vtemp, mask = 0;
-	int shift;
-
-	if (size == 1)
-		mask = 0xff;
-	if (size == 2)
-		mask = 0xffff;
-
-	shift = (where & 3);
-
-	__raw_writel((addr + where), IT8152_PCI_CFG_ADDR);
-	vtemp = __raw_readl(IT8152_PCI_CFG_DATA);
-
-	if (mask)
-		vtemp &= ~(mask << (8 * shift));
-	else
-		vtemp = 0;
-
-	v = (value << (8 * shift));
-	__raw_writel((addr + where), IT8152_PCI_CFG_ADDR);
-	__raw_writel((v | vtemp), IT8152_PCI_CFG_DATA);
-
-	return PCIBIOS_SUCCESSFUL;
-}
-
-struct pci_ops it8152_ops = {
-	.read = it8152_pci_read_config,
-	.write = it8152_pci_write_config,
-};
-
-static struct resource it8152_io = {
-	.name	= "IT8152 PCI I/O region",
-	.flags	= IORESOURCE_IO,
-};
-
-static struct resource it8152_mem = {
-	.name	= "IT8152 PCI memory region",
-	.start	= 0x10000000,
-	.end	= 0x13e00000,
-	.flags	= IORESOURCE_MEM,
-};
-
-/*
- * The following functions are needed for DMA bouncing.
- * ITE8152 chip can address up to 64MByte, so all the devices
- * connected to ITE8152 (PCI and USB) should have limited DMA window
- */
-static int it8152_needs_bounce(struct device *dev, dma_addr_t dma_addr, size_t size)
-{
-	dev_dbg(dev, "%s: dma_addr %08x, size %08x\n",
-		__func__, dma_addr, size);
-	return (dma_addr + size - PHYS_OFFSET) >= SZ_64M;
-}
-
-/*
- * Setup DMA mask to 64MB on devices connected to ITE8152. Ignore all
- * other devices.
- */
-static int it8152_pci_platform_notify(struct device *dev)
-{
-	if (dev_is_pci(dev)) {
-		if (dev->dma_mask)
-			*dev->dma_mask = (SZ_64M - 1) | PHYS_OFFSET;
-		dev->coherent_dma_mask = (SZ_64M - 1) | PHYS_OFFSET;
-		dmabounce_register_dev(dev, 2048, 4096, it8152_needs_bounce);
-	}
-	return 0;
-}
-
-static int it8152_pci_platform_notify_remove(struct device *dev)
-{
-	if (dev_is_pci(dev))
-		dmabounce_unregister_dev(dev);
-
-	return 0;
-}
-
-int dma_set_coherent_mask(struct device *dev, u64 mask)
-{
-	if (mask >= PHYS_OFFSET + SZ_64M - 1)
-		return 0;
-
-	return -EIO;
-}
-
-int __init it8152_pci_setup(int nr, struct pci_sys_data *sys)
-{
-	/*
-	 * FIXME: use pci_ioremap_io to remap the IO space here and
-	 * move over to the generic io.h implementation.
-	 * This requires solving the same problem for PXA PCMCIA
-	 * support.
-	 */
-	it8152_io.start = (unsigned long)IT8152_IO_BASE + 0x12000;
-	it8152_io.end	= (unsigned long)IT8152_IO_BASE + 0x12000 + 0x100000;
-
-	sys->mem_offset = 0x10000000;
-	sys->io_offset  = (unsigned long)IT8152_IO_BASE;
-
-	if (request_resource(&ioport_resource, &it8152_io)) {
-		printk(KERN_ERR "PCI: unable to allocate IO region\n");
-		goto err0;
-	}
-	if (request_resource(&iomem_resource, &it8152_mem)) {
-		printk(KERN_ERR "PCI: unable to allocate memory region\n");
-		goto err1;
-	}
-
-	pci_add_resource_offset(&sys->resources, &it8152_io, sys->io_offset);
-	pci_add_resource_offset(&sys->resources, &it8152_mem, sys->mem_offset);
-
-	if (platform_notify || platform_notify_remove) {
-		printk(KERN_ERR "PCI: Can't use platform_notify\n");
-		goto err2;
-	}
-
-	platform_notify = it8152_pci_platform_notify;
-	platform_notify_remove = it8152_pci_platform_notify_remove;
-
-	return 1;
-
-err2:
-	release_resource(&it8152_io);
-err1:
-	release_resource(&it8152_mem);
-err0:
-	return -EBUSY;
-}
-
-/* ITE bridge requires setting latency timer to avoid early bus access
-   termination by PCI bus master devices
-*/
-void pcibios_set_master(struct pci_dev *dev)
-{
-	u8 lat;
-
-	/* no need to update on-chip OHCI controller */
-	if ((dev->vendor == PCI_VENDOR_ID_ITE) &&
-	    (dev->device == PCI_DEVICE_ID_ITE_8152) &&
-	    ((dev->class >> 8) == PCI_CLASS_SERIAL_USB))
-		return;
-
-	pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
-	if (lat < 16)
-		lat = (64 <= pcibios_max_latency) ? 64 : pcibios_max_latency;
-	else if (lat > pcibios_max_latency)
-		lat = pcibios_max_latency;
-	else
-		return;
-	printk(KERN_DEBUG "PCI: Setting latency timer of device %s to %d\n",
-	       pci_name(dev), lat);
-	pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat);
-}
-
-
-EXPORT_SYMBOL(dma_set_coherent_mask);
diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c
index 62f241b09fe3..da30a4d4f35c 100644
--- a/arch/arm/common/locomo.c
+++ b/arch/arm/common/locomo.c
@@ -23,7 +23,6 @@
 #include <linux/spinlock.h>
 #include <linux/io.h>
 
-#include <mach/hardware.h>
 #include <asm/irq.h>
 #include <asm/mach/irq.h>
 
@@ -834,15 +833,13 @@ static int locomo_bus_probe(struct device *dev)
 	return ret;
 }
 
-static int locomo_bus_remove(struct device *dev)
+static void locomo_bus_remove(struct device *dev)
 {
 	struct locomo_dev *ldev = LOCOMO_DEV(dev);
 	struct locomo_driver *drv = LOCOMO_DRV(dev->driver);
-	int ret = 0;
 
 	if (drv->remove)
-		ret = drv->remove(ldev);
-	return ret;
+		drv->remove(ldev);
 }
 
 struct bus_type locomo_bus_type = {
diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index 947ef7981d92..f5e6990b8856 100644
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -22,17 +22,20 @@
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
-#include <linux/dma-mapping.h>
+#include <linux/dma-map-ops.h>
 #include <linux/clk.h>
 #include <linux/io.h>
 
-#include <mach/hardware.h>
 #include <asm/mach/irq.h>
 #include <asm/mach-types.h>
 #include <linux/sizes.h>
 
 #include <asm/hardware/sa1111.h>
 
+#ifdef CONFIG_ARCH_SA1100
+#include <mach/hardware.h>
+#endif
+
 /* SA1111 IRQs */
 #define IRQ_GPAIN0		(0)
 #define IRQ_GPAIN1		(1)
@@ -196,14 +199,6 @@ static int sa1111_map_irq(struct sa1111 *sachip, irq_hw_number_t hwirq)
 	return irq_create_mapping(sachip->irqdomain, hwirq);
 }
 
-static void sa1111_handle_irqdomain(struct irq_domain *irqdomain, int irq)
-{
-	struct irq_desc *d = irq_to_desc(irq_linear_revmap(irqdomain, irq));
-
-	if (d)
-		generic_handle_irq_desc(d);
-}
-
 /*
  * SA1111 interrupt support.  Since clearing an IRQ while there are
  * active IRQs causes the interrupt output to pulse, the upper levels
@@ -234,11 +229,11 @@ static void sa1111_irq_handler(struct irq_desc *desc)
 
 	for (i = 0; stat0; i++, stat0 >>= 1)
 		if (stat0 & 1)
-			sa1111_handle_irqdomain(irqdomain, i);
+			generic_handle_domain_irq(irqdomain, i);
 
 	for (i = 32; stat1; i++, stat1 >>= 1)
 		if (stat1 & 1)
-			sa1111_handle_irqdomain(irqdomain, i);
+			generic_handle_domain_irq(irqdomain, i);
 
 	/* For level-based interrupts */
 	desc->irq_data.chip->irq_unmask(&desc->irq_data);
@@ -302,10 +297,13 @@ static int sa1111_retrigger_irq(struct irq_data *d)
 			break;
 	}
 
-	if (i == 8)
+	if (i == 8) {
 		pr_err("Danger Will Robinson: failed to re-trigger IRQ%d\n",
 		       d->irq);
-	return i == 8 ? -1 : 0;
+		return 0;
+	}
+
+	return 1;
 }
 
 static int sa1111_type_irq(struct irq_data *d, unsigned int flags)
@@ -1361,15 +1359,13 @@ static int sa1111_bus_probe(struct device *dev)
 	return ret;
 }
 
-static int sa1111_bus_remove(struct device *dev)
+static void sa1111_bus_remove(struct device *dev)
 {
 	struct sa1111_dev *sadev = to_sa1111_device(dev);
 	struct sa1111_driver *drv = SA1111_DRV(dev->driver);
-	int ret = 0;
 
 	if (drv->remove)
-		ret = drv->remove(sadev);
-	return ret;
+		drv->remove(sadev);
 }
 
 struct bus_type sa1111_bus_type = {
@@ -1393,70 +1389,9 @@ void sa1111_driver_unregister(struct sa1111_driver *driver)
 }
 EXPORT_SYMBOL(sa1111_driver_unregister);
 
-#ifdef CONFIG_DMABOUNCE
-/*
- * According to the "Intel StrongARM SA-1111 Microprocessor Companion
- * Chip Specification Update" (June 2000), erratum #7, there is a
- * significant bug in the SA1111 SDRAM shared memory controller.  If
- * an access to a region of memory above 1MB relative to the bank base,
- * it is important that address bit 10 _NOT_ be asserted. Depending
- * on the configuration of the RAM, bit 10 may correspond to one
- * of several different (processor-relative) address bits.
- *
- * This routine only identifies whether or not a given DMA address
- * is susceptible to the bug.
- *
- * This should only get called for sa1111_device types due to the
- * way we configure our device dma_masks.
- */
-static int sa1111_needs_bounce(struct device *dev, dma_addr_t addr, size_t size)
-{
-	/*
-	 * Section 4.6 of the "Intel StrongARM SA-1111 Development Module
-	 * User's Guide" mentions that jumpers R51 and R52 control the
-	 * target of SA-1111 DMA (either SDRAM bank 0 on Assabet, or
-	 * SDRAM bank 1 on Neponset). The default configuration selects
-	 * Assabet, so any address in bank 1 is necessarily invalid.
-	 */
-	return (machine_is_assabet() || machine_is_pfs168()) &&
-		(addr >= 0xc8000000 || (addr + size) >= 0xc8000000);
-}
-
-static int sa1111_notifier_call(struct notifier_block *n, unsigned long action,
-	void *data)
-{
-	struct sa1111_dev *dev = to_sa1111_device(data);
-
-	switch (action) {
-	case BUS_NOTIFY_ADD_DEVICE:
-		if (dev->dev.dma_mask && dev->dma_mask < 0xffffffffUL) {
-			int ret = dmabounce_register_dev(&dev->dev, 1024, 4096,
-					sa1111_needs_bounce);
-			if (ret)
-				dev_err(&dev->dev, "failed to register with dmabounce: %d\n", ret);
-		}
-		break;
-
-	case BUS_NOTIFY_DEL_DEVICE:
-		if (dev->dev.dma_mask && dev->dma_mask < 0xffffffffUL)
-			dmabounce_unregister_dev(&dev->dev);
-		break;
-	}
-	return NOTIFY_OK;
-}
-
-static struct notifier_block sa1111_bus_notifier = {
-	.notifier_call = sa1111_notifier_call,
-};
-#endif
-
 static int __init sa1111_init(void)
 {
 	int ret = bus_register(&sa1111_bus_type);
-#ifdef CONFIG_DMABOUNCE
-	if (ret == 0)
-		bus_register_notifier(&sa1111_bus_type, &sa1111_bus_notifier);
-#endif
 	if (ret == 0)
 		platform_driver_register(&sa1111_device_driver);
 	return ret;
@@ -1465,9 +1400,6 @@ static int __init sa1111_init(void)
 static void __exit sa1111_exit(void)
 {
 	platform_driver_unregister(&sa1111_device_driver);
-#ifdef CONFIG_DMABOUNCE
-	bus_unregister_notifier(&sa1111_bus_type, &sa1111_bus_notifier);
-#endif
 	bus_unregister(&sa1111_bus_type);
 }
 
diff --git a/arch/arm/common/scoop.c b/arch/arm/common/scoop.c
index 6edb961bd6c1..e74c5bfdc6d3 100644
--- a/arch/arm/common/scoop.c
+++ b/arch/arm/common/scoop.c
@@ -240,9 +240,6 @@ static int scoop_remove(struct platform_device *pdev)
 {
 	struct scoop_dev *sdev = platform_get_drvdata(pdev);
 
-	if (!sdev)
-		return -EINVAL;
-
 	if (sdev->gpio.base != -1)
 		gpiochip_remove(&sdev->gpio);
 
diff --git a/arch/arm/common/sharpsl_param.c b/arch/arm/common/sharpsl_param.c
index efeb5724d9e9..6237ede2f0c7 100644
--- a/arch/arm/common/sharpsl_param.c
+++ b/arch/arm/common/sharpsl_param.c
@@ -40,7 +40,9 @@ EXPORT_SYMBOL(sharpsl_param);
 
 void sharpsl_save_param(void)
 {
-	memcpy(&sharpsl_param, param_start(PARAM_BASE), sizeof(struct sharpsl_param_info));
+	struct sharpsl_param_info *params = param_start(PARAM_BASE);
+
+	memcpy(&sharpsl_param, params, sizeof(*params));
 
 	if (sharpsl_param.comadj_keyword != COMADJ_MAGIC)
 		sharpsl_param.comadj=-1;