16 files changed, 136 insertions, 511 deletions

diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile
index 0baba21404dc..9861407d644a 100644
--- a/arch/powerpc/sysdev/Makefile
+++ b/arch/powerpc/sysdev/Makefile
@@ -32,7 +32,6 @@ mv64x60-$(CONFIG_PCI)		+= mv64x60_pci.o
 obj-$(CONFIG_MV64X60)		+= $(mv64x60-y) mv64x60_pic.o mv64x60_dev.o \
 				   mv64x60_udbg.o
 obj-$(CONFIG_RTC_DRV_CMOS)	+= rtc_cmos_setup.o
-obj-$(CONFIG_AXON_RAM)		+= axonram.o
 
 obj-$(CONFIG_PPC_INDIRECT_PCI)	+= indirect_pci.o
 obj-$(CONFIG_PPC_I8259)		+= i8259.o
@@ -43,7 +42,8 @@ obj-$(CONFIG_OF_RTC)		+= of_rtc.o
 
 obj-$(CONFIG_CPM)		+= cpm_common.o
 obj-$(CONFIG_CPM1)		+= cpm1.o
-obj-$(CONFIG_CPM2)		+= cpm2.o cpm2_pic.o
+obj-$(CONFIG_CPM2)		+= cpm2.o cpm2_pic.o cpm_gpio.o
+obj-$(CONFIG_8xx_GPIO)		+= cpm_gpio.o
 obj-$(CONFIG_QUICC_ENGINE)	+= cpm_common.o
 obj-$(CONFIG_PPC_DCR)		+= dcr.o
 obj-$(CONFIG_UCODE_PATCH)	+= micropatch.o
diff --git a/arch/powerpc/sysdev/axonram.c b/arch/powerpc/sysdev/axonram.c
deleted file mode 100644
index 1b307c80b401..000000000000
--- a/arch/powerpc/sysdev/axonram.c
+++ /dev/null
@@ -1,383 +0,0 @@
-/*
- * (C) Copyright IBM Deutschland Entwicklung GmbH 2006
- *
- * Author: Maxim Shchetynin <maxim@de.ibm.com>
- *
- * Axon DDR2 device driver.
- * It registers one block device per Axon's DDR2 memory bank found on a system.
- * Block devices are called axonram?, their major and minor numbers are
- * available in /proc/devices, /proc/partitions or in /sys/block/axonram?/dev.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/bio.h>
-#include <linux/blkdev.h>
-#include <linux/dax.h>
-#include <linux/device.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/genhd.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/ioport.h>
-#include <linux/irq.h>
-#include <linux/irqreturn.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/mod_devicetable.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/of_device.h>
-#include <linux/of_platform.h>
-#include <linux/pfn_t.h>
-#include <linux/uio.h>
-
-#include <asm/page.h>
-#include <asm/prom.h>
-
-#define AXON_RAM_MODULE_NAME		"axonram"
-#define AXON_RAM_DEVICE_NAME		"axonram"
-#define AXON_RAM_MINORS_PER_DISK	16
-#define AXON_RAM_BLOCK_SHIFT		PAGE_SHIFT
-#define AXON_RAM_BLOCK_SIZE		1 << AXON_RAM_BLOCK_SHIFT
-#define AXON_RAM_SECTOR_SHIFT		9
-#define AXON_RAM_SECTOR_SIZE		1 << AXON_RAM_SECTOR_SHIFT
-#define AXON_RAM_IRQ_FLAGS		IRQF_SHARED | IRQF_TRIGGER_RISING
-
-static int azfs_major, azfs_minor;
-
-struct axon_ram_bank {
-	struct platform_device	*device;
-	struct gendisk		*disk;
-	struct dax_device	*dax_dev;
-	unsigned int		irq_id;
-	unsigned long		ph_addr;
-	unsigned long		io_addr;
-	unsigned long		size;
-	unsigned long		ecc_counter;
-};
-
-static ssize_t
-axon_ram_sysfs_ecc(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct platform_device *device = to_platform_device(dev);
-	struct axon_ram_bank *bank = device->dev.platform_data;
-
-	BUG_ON(!bank);
-
-	return sprintf(buf, "%ld\n", bank->ecc_counter);
-}
-
-static DEVICE_ATTR(ecc, S_IRUGO, axon_ram_sysfs_ecc, NULL);
-
-/**
- * axon_ram_irq_handler - interrupt handler for Axon RAM ECC
- * @irq: interrupt ID
- * @dev: pointer to of_device
- */
-static irqreturn_t
-axon_ram_irq_handler(int irq, void *dev)
-{
-	struct platform_device *device = dev;
-	struct axon_ram_bank *bank = device->dev.platform_data;
-
-	BUG_ON(!bank);
-
-	dev_err(&device->dev, "Correctable memory error occurred\n");
-	bank->ecc_counter++;
-	return IRQ_HANDLED;
-}
-
-/**
- * axon_ram_make_request - make_request() method for block device
- * @queue, @bio: see blk_queue_make_request()
- */
-static blk_qc_t
-axon_ram_make_request(struct request_queue *queue, struct bio *bio)
-{
-	struct axon_ram_bank *bank = bio->bi_disk->private_data;
-	unsigned long phys_mem, phys_end;
-	void *user_mem;
-	struct bio_vec vec;
-	unsigned int transfered;
-	struct bvec_iter iter;
-
-	phys_mem = bank->io_addr + (bio->bi_iter.bi_sector <<
-				    AXON_RAM_SECTOR_SHIFT);
-	phys_end = bank->io_addr + bank->size;
-	transfered = 0;
-	bio_for_each_segment(vec, bio, iter) {
-		if (unlikely(phys_mem + vec.bv_len > phys_end)) {
-			bio_io_error(bio);
-			return BLK_QC_T_NONE;
-		}
-
-		user_mem = page_address(vec.bv_page) + vec.bv_offset;
-		if (bio_data_dir(bio) == READ)
-			memcpy(user_mem, (void *) phys_mem, vec.bv_len);
-		else
-			memcpy((void *) phys_mem, user_mem, vec.bv_len);
-
-		phys_mem += vec.bv_len;
-		transfered += vec.bv_len;
-	}
-	bio_endio(bio);
-	return BLK_QC_T_NONE;
-}
-
-static const struct block_device_operations axon_ram_devops = {
-	.owner		= THIS_MODULE,
-};
-
-static long
-__axon_ram_direct_access(struct axon_ram_bank *bank, pgoff_t pgoff, long nr_pages,
-		       void **kaddr, pfn_t *pfn)
-{
-	resource_size_t offset = pgoff * PAGE_SIZE;
-
-	*kaddr = (void *) bank->io_addr + offset;
-	*pfn = phys_to_pfn_t(bank->ph_addr + offset, PFN_DEV);
-	return (bank->size - offset) / PAGE_SIZE;
-}
-
-static long
-axon_ram_dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff, long nr_pages,
-		       void **kaddr, pfn_t *pfn)
-{
-	struct axon_ram_bank *bank = dax_get_private(dax_dev);
-
-	return __axon_ram_direct_access(bank, pgoff, nr_pages, kaddr, pfn);
-}
-
-static size_t axon_ram_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff,
-		void *addr, size_t bytes, struct iov_iter *i)
-{
-	return copy_from_iter(addr, bytes, i);
-}
-
-static const struct dax_operations axon_ram_dax_ops = {
-	.direct_access = axon_ram_dax_direct_access,
-	.copy_from_iter = axon_ram_copy_from_iter,
-};
-
-/**
- * axon_ram_probe - probe() method for platform driver
- * @device: see platform_driver method
- */
-static int axon_ram_probe(struct platform_device *device)
-{
-	static int axon_ram_bank_id = -1;
-	struct axon_ram_bank *bank;
-	struct resource resource;
-	int rc;
-
-	axon_ram_bank_id++;
-
-	dev_info(&device->dev, "Found memory controller on %pOF\n",
-			device->dev.of_node);
-
-	bank = kzalloc(sizeof(*bank), GFP_KERNEL);
-	if (!bank)
-		return -ENOMEM;
-
-	device->dev.platform_data = bank;
-
-	bank->device = device;
-
-	if (of_address_to_resource(device->dev.of_node, 0, &resource) != 0) {
-		dev_err(&device->dev, "Cannot access device tree\n");
-		rc = -EFAULT;
-		goto failed;
-	}
-
-	bank->size = resource_size(&resource);
-
-	if (bank->size == 0) {
-		dev_err(&device->dev, "No DDR2 memory found for %s%d\n",
-				AXON_RAM_DEVICE_NAME, axon_ram_bank_id);
-		rc = -ENODEV;
-		goto failed;
-	}
-
-	dev_info(&device->dev, "Register DDR2 memory device %s%d with %luMB\n",
-			AXON_RAM_DEVICE_NAME, axon_ram_bank_id, bank->size >> 20);
-
-	bank->ph_addr = resource.start;
-	bank->io_addr = (unsigned long) ioremap_prot(
-			bank->ph_addr, bank->size, _PAGE_NO_CACHE);
-	if (bank->io_addr == 0) {
-		dev_err(&device->dev, "ioremap() failed\n");
-		rc = -EFAULT;
-		goto failed;
-	}
-
-	bank->disk = alloc_disk(AXON_RAM_MINORS_PER_DISK);
-	if (bank->disk == NULL) {
-		dev_err(&device->dev, "Cannot register disk\n");
-		rc = -EFAULT;
-		goto failed;
-	}
-
-
-	bank->disk->major = azfs_major;
-	bank->disk->first_minor = azfs_minor;
-	bank->disk->fops = &axon_ram_devops;
-	bank->disk->private_data = bank;
-
-	sprintf(bank->disk->disk_name, "%s%d",
-			AXON_RAM_DEVICE_NAME, axon_ram_bank_id);
-
-	bank->dax_dev = alloc_dax(bank, bank->disk->disk_name,
-			&axon_ram_dax_ops);
-	if (!bank->dax_dev) {
-		rc = -ENOMEM;
-		goto failed;
-	}
-
-	bank->disk->queue = blk_alloc_queue(GFP_KERNEL);
-	if (bank->disk->queue == NULL) {
-		dev_err(&device->dev, "Cannot register disk queue\n");
-		rc = -EFAULT;
-		goto failed;
-	}
-
-	set_capacity(bank->disk, bank->size >> AXON_RAM_SECTOR_SHIFT);
-	blk_queue_make_request(bank->disk->queue, axon_ram_make_request);
-	blk_queue_logical_block_size(bank->disk->queue, AXON_RAM_SECTOR_SIZE);
-	device_add_disk(&device->dev, bank->disk);
-
-	bank->irq_id = irq_of_parse_and_map(device->dev.of_node, 0);
-	if (!bank->irq_id) {
-		dev_err(&device->dev, "Cannot access ECC interrupt ID\n");
-		rc = -EFAULT;
-		goto failed;
-	}
-
-	rc = request_irq(bank->irq_id, axon_ram_irq_handler,
-			AXON_RAM_IRQ_FLAGS, bank->disk->disk_name, device);
-	if (rc != 0) {
-		dev_err(&device->dev, "Cannot register ECC interrupt handler\n");
-		bank->irq_id = 0;
-		rc = -EFAULT;
-		goto failed;
-	}
-
-	rc = device_create_file(&device->dev, &dev_attr_ecc);
-	if (rc != 0) {
-		dev_err(&device->dev, "Cannot create sysfs file\n");
-		rc = -EFAULT;
-		goto failed;
-	}
-
-	azfs_minor += bank->disk->minors;
-
-	return 0;
-
-failed:
-	if (bank->irq_id)
-		free_irq(bank->irq_id, device);
-	if (bank->disk != NULL) {
-		if (bank->disk->major > 0)
-			unregister_blkdev(bank->disk->major,
-					bank->disk->disk_name);
-		if (bank->disk->flags & GENHD_FL_UP)
-			del_gendisk(bank->disk);
-		put_disk(bank->disk);
-	}
-	kill_dax(bank->dax_dev);
-	put_dax(bank->dax_dev);
-	device->dev.platform_data = NULL;
-	if (bank->io_addr != 0)
-		iounmap((void __iomem *) bank->io_addr);
-	kfree(bank);
-	return rc;
-}
-
-/**
- * axon_ram_remove - remove() method for platform driver
- * @device: see of_platform_driver method
- */
-static int
-axon_ram_remove(struct platform_device *device)
-{
-	struct axon_ram_bank *bank = device->dev.platform_data;
-
-	BUG_ON(!bank || !bank->disk);
-
-	device_remove_file(&device->dev, &dev_attr_ecc);
-	free_irq(bank->irq_id, device);
-	kill_dax(bank->dax_dev);
-	put_dax(bank->dax_dev);
-	del_gendisk(bank->disk);
-	put_disk(bank->disk);
-	iounmap((void __iomem *) bank->io_addr);
-	kfree(bank);
-
-	return 0;
-}
-
-static const struct of_device_id axon_ram_device_id[] = {
-	{
-		.type	= "dma-memory"
-	},
-	{}
-};
-MODULE_DEVICE_TABLE(of, axon_ram_device_id);
-
-static struct platform_driver axon_ram_driver = {
-	.probe		= axon_ram_probe,
-	.remove		= axon_ram_remove,
-	.driver = {
-		.name = AXON_RAM_MODULE_NAME,
-		.of_match_table = axon_ram_device_id,
-	},
-};
-
-/**
- * axon_ram_init
- */
-static int __init
-axon_ram_init(void)
-{
-	azfs_major = register_blkdev(azfs_major, AXON_RAM_DEVICE_NAME);
-	if (azfs_major < 0) {
-		printk(KERN_ERR "%s cannot become block device major number\n",
-				AXON_RAM_MODULE_NAME);
-		return -EFAULT;
-	}
-	azfs_minor = 0;
-
-	return platform_driver_register(&axon_ram_driver);
-}
-
-/**
- * axon_ram_exit
- */
-static void __exit
-axon_ram_exit(void)
-{
-	platform_driver_unregister(&axon_ram_driver);
-	unregister_blkdev(azfs_major, AXON_RAM_DEVICE_NAME);
-}
-
-module_init(axon_ram_init);
-module_exit(axon_ram_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Maxim Shchetynin <maxim@de.ibm.com>");
-MODULE_DESCRIPTION("Axon DDR2 RAM device driver for IBM Cell BE");
diff --git a/arch/powerpc/sysdev/cpm1.c b/arch/powerpc/sysdev/cpm1.c
index c6f154b602fb..5240d3a74a10 100644
--- a/arch/powerpc/sysdev/cpm1.c
+++ b/arch/powerpc/sysdev/cpm1.c
@@ -629,8 +629,9 @@ static int cpm1_gpio16_dir_in(struct gpio_chip *gc, unsigned int gpio)
 	return 0;
 }
 
-int cpm1_gpiochip_add16(struct device_node *np)
+int cpm1_gpiochip_add16(struct device *dev)
 {
+	struct device_node *np = dev->of_node;
 	struct cpm1_gpio16_chip *cpm1_gc;
 	struct of_mm_gpio_chip *mm_gc;
 	struct gpio_chip *gc;
@@ -660,6 +661,8 @@ int cpm1_gpiochip_add16(struct device_node *np)
 	gc->get = cpm1_gpio16_get;
 	gc->set = cpm1_gpio16_set;
 	gc->to_irq = cpm1_gpio16_to_irq;
+	gc->parent = dev;
+	gc->owner = THIS_MODULE;
 
 	return of_mm_gpiochip_add_data(np, mm_gc, cpm1_gc);
 }
@@ -755,8 +758,9 @@ static int cpm1_gpio32_dir_in(struct gpio_chip *gc, unsigned int gpio)
 	return 0;
 }
 
-int cpm1_gpiochip_add32(struct device_node *np)
+int cpm1_gpiochip_add32(struct device *dev)
 {
+	struct device_node *np = dev->of_node;
 	struct cpm1_gpio32_chip *cpm1_gc;
 	struct of_mm_gpio_chip *mm_gc;
 	struct gpio_chip *gc;
@@ -776,31 +780,10 @@ int cpm1_gpiochip_add32(struct device_node *np)
 	gc->direction_output = cpm1_gpio32_dir_out;
 	gc->get = cpm1_gpio32_get;
 	gc->set = cpm1_gpio32_set;
+	gc->parent = dev;
+	gc->owner = THIS_MODULE;
 
 	return of_mm_gpiochip_add_data(np, mm_gc, cpm1_gc);
 }
 
-static int cpm_init_par_io(void)
-{
-	struct device_node *np;
-
-	for_each_compatible_node(np, NULL, "fsl,cpm1-pario-bank-a")
-		cpm1_gpiochip_add16(np);
-
-	for_each_compatible_node(np, NULL, "fsl,cpm1-pario-bank-b")
-		cpm1_gpiochip_add32(np);
-
-	for_each_compatible_node(np, NULL, "fsl,cpm1-pario-bank-c")
-		cpm1_gpiochip_add16(np);
-
-	for_each_compatible_node(np, NULL, "fsl,cpm1-pario-bank-d")
-		cpm1_gpiochip_add16(np);
-
-	/* Port E uses CPM2 layout */
-	for_each_compatible_node(np, NULL, "fsl,cpm1-pario-bank-e")
-		cpm2_gpiochip_add32(np);
-	return 0;
-}
-arch_initcall(cpm_init_par_io);
-
 #endif /* CONFIG_8xx_GPIO */
diff --git a/arch/powerpc/sysdev/cpm2.c b/arch/powerpc/sysdev/cpm2.c
index f78ff841652c..07718b9a2c99 100644
--- a/arch/powerpc/sysdev/cpm2.c
+++ b/arch/powerpc/sysdev/cpm2.c
@@ -354,14 +354,3 @@ void cpm2_set_pin(int port, int pin, int flags)
 	else
 		clrbits32(&iop[port].odr, pin);
 }
-
-static int cpm_init_par_io(void)
-{
-	struct device_node *np;
-
-	for_each_compatible_node(np, NULL, "fsl,cpm2-pario-bank")
-		cpm2_gpiochip_add32(np);
-	return 0;
-}
-arch_initcall(cpm_init_par_io);
-
diff --git a/arch/powerpc/sysdev/cpm_common.c b/arch/powerpc/sysdev/cpm_common.c
index 51bf749a4f3a..b74508175b67 100644
--- a/arch/powerpc/sysdev/cpm_common.c
+++ b/arch/powerpc/sysdev/cpm_common.c
@@ -190,8 +190,9 @@ static int cpm2_gpio32_dir_in(struct gpio_chip *gc, unsigned int gpio)
 	return 0;
 }
 
-int cpm2_gpiochip_add32(struct device_node *np)
+int cpm2_gpiochip_add32(struct device *dev)
 {
+	struct device_node *np = dev->of_node;
 	struct cpm2_gpio32_chip *cpm2_gc;
 	struct of_mm_gpio_chip *mm_gc;
 	struct gpio_chip *gc;
@@ -211,6 +212,8 @@ int cpm2_gpiochip_add32(struct device_node *np)
 	gc->direction_output = cpm2_gpio32_dir_out;
 	gc->get = cpm2_gpio32_get;
 	gc->set = cpm2_gpio32_set;
+	gc->parent = dev;
+	gc->owner = THIS_MODULE;
 
 	return of_mm_gpiochip_add_data(np, mm_gc, cpm2_gc);
 }
diff --git a/arch/powerpc/sysdev/cpm_gpio.c b/arch/powerpc/sysdev/cpm_gpio.c
new file mode 100644
index 000000000000..0badc90be666
--- /dev/null
+++ b/arch/powerpc/sysdev/cpm_gpio.c
@@ -0,0 +1,80 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Common CPM GPIO wrapper for the CPM GPIO ports
+ *
+ * Author: Christophe Leroy <christophe.leroy@c-s.fr>
+ *
+ * Copyright 2017 CS Systemes d'Information.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/of_device.h>
+
+#include <asm/cpm.h>
+#ifdef CONFIG_8xx_GPIO
+#include <asm/cpm1.h>
+#endif
+
+static int cpm_gpio_probe(struct platform_device *ofdev)
+{
+	struct device *dev = &ofdev->dev;
+	int (*gp_add)(struct device *dev) = of_device_get_match_data(dev);
+
+	if (!gp_add)
+		return -ENODEV;
+
+	return gp_add(dev);
+}
+
+static const struct of_device_id cpm_gpio_match[] = {
+#ifdef CONFIG_8xx_GPIO
+	{
+		.compatible = "fsl,cpm1-pario-bank-a",
+		.data = cpm1_gpiochip_add16,
+	},
+	{
+		.compatible = "fsl,cpm1-pario-bank-b",
+		.data = cpm1_gpiochip_add32,
+	},
+	{
+		.compatible = "fsl,cpm1-pario-bank-c",
+		.data = cpm1_gpiochip_add16,
+	},
+	{
+		.compatible = "fsl,cpm1-pario-bank-d",
+		.data = cpm1_gpiochip_add16,
+	},
+	/* Port E uses CPM2 layout */
+	{
+		.compatible = "fsl,cpm1-pario-bank-e",
+		.data = cpm2_gpiochip_add32,
+	},
+#endif
+	{
+		.compatible = "fsl,cpm2-pario-bank",
+		.data = cpm2_gpiochip_add32,
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, cpm_gpio_match);
+
+static struct platform_driver cpm_gpio_driver = {
+	.probe		= cpm_gpio_probe,
+	.driver		= {
+		.name	= "cpm-gpio",
+		.owner	= THIS_MODULE,
+		.of_match_table	= cpm_gpio_match,
+	},
+};
+
+static int __init cpm_gpio_init(void)
+{
+	return platform_driver_register(&cpm_gpio_driver);
+}
+arch_initcall(cpm_gpio_init);
+
+MODULE_AUTHOR("Christophe Leroy <christophe.leroy@c-s.fr>");
+MODULE_DESCRIPTION("Driver for CPM GPIO");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:cpm-gpio");
diff --git a/arch/powerpc/sysdev/fsl_mpic_timer_wakeup.c b/arch/powerpc/sysdev/fsl_mpic_timer_wakeup.c
index 1707bf04dec6..94278e8af192 100644
--- a/arch/powerpc/sysdev/fsl_mpic_timer_wakeup.c
+++ b/arch/powerpc/sysdev/fsl_mpic_timer_wakeup.c
@@ -56,17 +56,16 @@ static ssize_t fsl_timer_wakeup_show(struct device *dev,
 				struct device_attribute *attr,
 				char *buf)
 {
-	struct timeval interval;
-	int val = 0;
+	time64_t interval = 0;
 
 	mutex_lock(&sysfs_lock);
 	if (fsl_wakeup->timer) {
 		mpic_get_remain_time(fsl_wakeup->timer, &interval);
-		val = interval.tv_sec + 1;
+		interval++;
 	}
 	mutex_unlock(&sysfs_lock);
 
-	return sprintf(buf, "%d\n", val);
+	return sprintf(buf, "%lld\n", interval);
 }
 
 static ssize_t fsl_timer_wakeup_store(struct device *dev,
@@ -74,11 +73,10 @@ static ssize_t fsl_timer_wakeup_store(struct device *dev,
 				const char *buf,
 				size_t count)
 {
-	struct timeval interval;
+	time64_t interval;
 	int ret;
 
-	interval.tv_usec = 0;
-	if (kstrtol(buf, 0, &interval.tv_sec))
+	if (kstrtoll(buf, 0, &interval))
 		return -EINVAL;
 
 	mutex_lock(&sysfs_lock);
@@ -89,13 +87,13 @@ static ssize_t fsl_timer_wakeup_store(struct device *dev,
 		fsl_wakeup->timer = NULL;
 	}
 
-	if (!interval.tv_sec) {
+	if (!interval) {
 		mutex_unlock(&sysfs_lock);
 		return count;
 	}
 
 	fsl_wakeup->timer = mpic_request_timer(fsl_mpic_timer_irq,
-						fsl_wakeup, &interval);
+						fsl_wakeup, interval);
 	if (!fsl_wakeup->timer) {
 		mutex_unlock(&sysfs_lock);
 		return -EINVAL;
diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index 61e07c78d64f..918be816b097 100644
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -448,7 +448,7 @@ static void setup_pci_atmu(struct pci_controller *hose)
 #endif
 		/* adjusting outbound windows could reclaim space in mem map */
 		if (paddr_hi < 0xffffffffull)
-			pr_warning("%pOF: WARNING: Outbound window cfg leaves "
+			pr_warn("%pOF: WARNING: Outbound window cfg leaves "
 				"gaps in memory map. Adjusting the memory map "
 				"could reduce unnecessary bounce buffering.\n",
 				hose->dn);
@@ -531,7 +531,7 @@ int fsl_add_bridge(struct platform_device *pdev, int is_primary)
 	dev = pdev->dev.of_node;
 
 	if (!of_device_is_available(dev)) {
-		pr_warning("%pOF: disabled\n", dev);
+		pr_warn("%pOF: disabled\n", dev);
 		return -ENODEV;
 	}
 
@@ -808,8 +808,8 @@ int __init mpc83xx_add_bridge(struct device_node *dev)
 	is_mpc83xx_pci = 1;
 
 	if (!of_device_is_available(dev)) {
-		pr_warning("%pOF: disabled by the firmware.\n",
-			   dev);
+		pr_warn("%pOF: disabled by the firmware.\n",
+			dev);
 		return -ENODEV;
 	}
 	pr_debug("Adding PCI host bridge %pOF\n", dev);
@@ -1070,7 +1070,7 @@ int fsl_pci_mcheck_exception(struct pt_regs *regs)
 	if (is_in_pci_mem_space(addr)) {
 		if (user_mode(regs)) {
 			pagefault_disable();
-			ret = get_user(regs->nip, &inst);
+			ret = get_user(inst, (__u32 __user *)regs->nip);
 			pagefault_enable();
 		} else {
 			ret = probe_kernel_address((void *)regs->nip, inst);
@@ -1304,10 +1304,8 @@ static int add_err_dev(struct platform_device *pdev)
 						   pdev->resource,
 						   pdev->num_resources,
 						   &pd, sizeof(pd));
-	if (IS_ERR(errdev))
-		return PTR_ERR(errdev);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(errdev);
 }
 
 static int fsl_pci_probe(struct platform_device *pdev)
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index ead3e2549ebf..73067805300a 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -1008,9 +1008,8 @@ static int mpic_host_map(struct irq_domain *h, unsigned int virq,
 	if (hw == mpic->spurious_vec)
 		return -EINVAL;
 	if (mpic->protected && test_bit(hw, mpic->protected)) {
-		pr_warning("mpic: Mapping of source 0x%x failed, "
-			   "source protected by firmware !\n",\
-			   (unsigned int)hw);
+		pr_warn("mpic: Mapping of source 0x%x failed, source protected by firmware !\n",
+			(unsigned int)hw);
 		return -EPERM;
 	}
 
@@ -1040,9 +1039,8 @@ static int mpic_host_map(struct irq_domain *h, unsigned int virq,
 		return 0;
 
 	if (hw >= mpic->num_sources) {
-		pr_warning("mpic: Mapping of source 0x%x failed, "
-			   "source out of range !\n",\
-			   (unsigned int)hw);
+		pr_warn("mpic: Mapping of source 0x%x failed, source out of range !\n",
+			(unsigned int)hw);
 		return -EINVAL;
 	}
 
diff --git a/arch/powerpc/sysdev/mpic_timer.c b/arch/powerpc/sysdev/mpic_timer.c
index a418579591be..87e7c42777a8 100644
--- a/arch/powerpc/sysdev/mpic_timer.c
+++ b/arch/powerpc/sysdev/mpic_timer.c
@@ -47,9 +47,6 @@
 #define MAX_TICKS_CASCADE		(~0U)
 #define TIMER_OFFSET(num)		(1 << (TIMERS_PER_GROUP - 1 - num))
 
-/* tv_usec should be less than ONE_SECOND, otherwise use tv_sec */
-#define ONE_SECOND			1000000
-
 struct timer_regs {
 	u32	gtccr;
 	u32	res0[3];
@@ -90,51 +87,23 @@ static struct cascade_priv cascade_timer[] = {
 static LIST_HEAD(timer_group_list);
 
 static void convert_ticks_to_time(struct timer_group_priv *priv,
-		const u64 ticks, struct timeval *time)
+		const u64 ticks, time64_t *time)
 {
-	u64 tmp_sec;
-
-	time->tv_sec = (__kernel_time_t)div_u64(ticks, priv->timerfreq);
-	tmp_sec = (u64)time->tv_sec * (u64)priv->timerfreq;
-
-	time->tv_usec = 0;
-
-	if (tmp_sec <= ticks)
-		time->tv_usec = (__kernel_suseconds_t)
-			div_u64((ticks - tmp_sec) * 1000000, priv->timerfreq);
-
-	return;
+	*time = (u64)div_u64(ticks, priv->timerfreq);
 }
 
 /* the time set by the user is converted to "ticks" */
 static int convert_time_to_ticks(struct timer_group_priv *priv,
-		const struct timeval *time, u64 *ticks)
+		time64_t time, u64 *ticks)
 {
 	u64 max_value;		/* prevent u64 overflow */
-	u64 tmp = 0;
-
-	u64 tmp_sec;
-	u64 tmp_ms;
-	u64 tmp_us;
 
 	max_value = div_u64(ULLONG_MAX, priv->timerfreq);
 
-	if (time->tv_sec > max_value ||
-			(time->tv_sec == max_value && time->tv_usec > 0))
+	if (time > max_value)
 		return -EINVAL;
 
-	tmp_sec = (u64)time->tv_sec * (u64)priv->timerfreq;
-	tmp += tmp_sec;
-
-	tmp_ms = time->tv_usec / 1000;
-	tmp_ms = div_u64((u64)tmp_ms * (u64)priv->timerfreq, 1000);
-	tmp += tmp_ms;
-
-	tmp_us = time->tv_usec % 1000;
-	tmp_us = div_u64((u64)tmp_us * (u64)priv->timerfreq, 1000000);
-	tmp += tmp_us;
-
-	*ticks = tmp;
+	*ticks = (u64)time * (u64)priv->timerfreq;
 
 	return 0;
 }
@@ -223,7 +192,7 @@ static struct mpic_timer *get_cascade_timer(struct timer_group_priv *priv,
 	return allocated_timer;
 }
 
-static struct mpic_timer *get_timer(const struct timeval *time)
+static struct mpic_timer *get_timer(time64_t time)
 {
 	struct timer_group_priv *priv;
 	struct mpic_timer *timer;
@@ -277,7 +246,7 @@ static struct mpic_timer *get_timer(const struct timeval *time)
  * @handle: the timer to be started.
  *
  * It will do ->fn(->dev) callback from the hardware interrupt at
- * the ->timeval point in the future.
+ * the 'time64_t' point in the future.
  */
 void mpic_start_timer(struct mpic_timer *handle)
 {
@@ -319,7 +288,7 @@ EXPORT_SYMBOL(mpic_stop_timer);
  *
  * Query timer remaining time.
  */
-void mpic_get_remain_time(struct mpic_timer *handle, struct timeval *time)
+void mpic_get_remain_time(struct mpic_timer *handle, time64_t *time)
 {
 	struct timer_group_priv *priv = container_of(handle,
 			struct timer_group_priv, timer[handle->num]);
@@ -391,7 +360,7 @@ EXPORT_SYMBOL(mpic_free_timer);
  * else "handle" on success.
  */
 struct mpic_timer *mpic_request_timer(irq_handler_t fn, void *dev,
-					const struct timeval *time)
+				      time64_t time)
 {
 	struct mpic_timer *allocated_timer;
 	int ret;
@@ -399,11 +368,7 @@ struct mpic_timer *mpic_request_timer(irq_handler_t fn, void *dev,
 	if (list_empty(&timer_group_list))
 		return NULL;
 
-	if (!(time->tv_sec + time->tv_usec) ||
-			time->tv_sec < 0 || time->tv_usec < 0)
-		return NULL;
-
-	if (time->tv_usec > ONE_SECOND)
+	if (time < 0)
 		return NULL;
 
 	allocated_timer = get_timer(time);
diff --git a/arch/powerpc/sysdev/mv64x60_pci.c b/arch/powerpc/sysdev/mv64x60_pci.c
index d52b3b81e05f..50c411b1761e 100644
--- a/arch/powerpc/sysdev/mv64x60_pci.c
+++ b/arch/powerpc/sysdev/mv64x60_pci.c
@@ -73,7 +73,7 @@ static ssize_t mv64x60_hs_reg_write(struct file *filp, struct kobject *kobj,
 static const struct bin_attribute mv64x60_hs_reg_attr = { /* Hotswap register */
 	.attr = {
 		.name = "hs_reg",
-		.mode = S_IRUGO | S_IWUSR,
+		.mode = 0644,
 	},
 	.size  = MV64X60_VAL_LEN_MAX,
 	.read  = mv64x60_hs_reg_read,
diff --git a/arch/powerpc/sysdev/xics/icp-native.c b/arch/powerpc/sysdev/xics/icp-native.c
index 2bfb9968d562..1459f4e8b698 100644
--- a/arch/powerpc/sysdev/xics/icp-native.c
+++ b/arch/powerpc/sysdev/xics/icp-native.c
@@ -241,18 +241,16 @@ static int __init icp_native_map_one_cpu(int hw_id, unsigned long addr,
 			  cpu, hw_id);
 
 	if (!request_mem_region(addr, size, rname)) {
-		pr_warning("icp_native: Could not reserve ICP MMIO"
-			   " for CPU %d, interrupt server #0x%x\n",
-			   cpu, hw_id);
+		pr_warn("icp_native: Could not reserve ICP MMIO for CPU %d, interrupt server #0x%x\n",
+			cpu, hw_id);
 		return -EBUSY;
 	}
 
 	icp_native_regs[cpu] = ioremap(addr, size);
 	kvmppc_set_xics_phys(cpu, addr);
 	if (!icp_native_regs[cpu]) {
-		pr_warning("icp_native: Failed ioremap for CPU %d, "
-			   "interrupt server #0x%x, addr %#lx\n",
-			   cpu, hw_id, addr);
+		pr_warn("icp_native: Failed ioremap for CPU %d, interrupt server #0x%x, addr %#lx\n",
+			cpu, hw_id, addr);
 		release_mem_region(addr, size);
 		return -ENOMEM;
 	}
diff --git a/arch/powerpc/sysdev/xics/ics-opal.c b/arch/powerpc/sysdev/xics/ics-opal.c
index 1c6bf4b66f56..f85f916ba432 100644
--- a/arch/powerpc/sysdev/xics/ics-opal.c
+++ b/arch/powerpc/sysdev/xics/ics-opal.c
@@ -131,8 +131,8 @@ static int ics_opal_set_affinity(struct irq_data *d,
 
 	wanted_server = xics_get_irq_server(d->irq, cpumask, 1);
 	if (wanted_server < 0) {
-		pr_warning("%s: No online cpus in the mask %*pb for irq %d\n",
-			   __func__, cpumask_pr_args(cpumask), d->irq);
+		pr_warn("%s: No online cpus in the mask %*pb for irq %d\n",
+			__func__, cpumask_pr_args(cpumask), d->irq);
 		return -1;
 	}
 	server = ics_opal_mangle_server(wanted_server);
diff --git a/arch/powerpc/sysdev/xics/ics-rtas.c b/arch/powerpc/sysdev/xics/ics-rtas.c
index 42e0c56ff81c..6aabc74688a6 100644
--- a/arch/powerpc/sysdev/xics/ics-rtas.c
+++ b/arch/powerpc/sysdev/xics/ics-rtas.c
@@ -141,8 +141,8 @@ static int ics_rtas_set_affinity(struct irq_data *d,
 
 	irq_server = xics_get_irq_server(d->irq, cpumask, 1);
 	if (irq_server == -1) {
-		pr_warning("%s: No online cpus in the mask %*pb for irq %d\n",
-			   __func__, cpumask_pr_args(cpumask), d->irq);
+		pr_warn("%s: No online cpus in the mask %*pb for irq %d\n",
+			__func__, cpumask_pr_args(cpumask), d->irq);
 		return -1;
 	}
 
diff --git a/arch/powerpc/sysdev/xics/xics-common.c b/arch/powerpc/sysdev/xics/xics-common.c
index ffe138b8b9dc..77e864d5506d 100644
--- a/arch/powerpc/sysdev/xics/xics-common.c
+++ b/arch/powerpc/sysdev/xics/xics-common.c
@@ -243,8 +243,8 @@ void xics_migrate_irqs_away(void)
 
 		/* This is expected during cpu offline. */
 		if (cpu_online(cpu))
-			pr_warning("IRQ %u affinity broken off cpu %u\n",
-			       virq, cpu);
+			pr_warn("IRQ %u affinity broken off cpu %u\n",
+				virq, cpu);
 
 		/* Reset affinity to all cpus */
 		raw_spin_unlock_irqrestore(&desc->lock, flags);
@@ -466,7 +466,7 @@ void __init xics_init(void)
 		    rc = icp_opal_init();
 	}
 	if (rc < 0) {
-		pr_warning("XICS: Cannot find a Presentation Controller !\n");
+		pr_warn("XICS: Cannot find a Presentation Controller !\n");
 		return;
 	}
 
@@ -481,7 +481,7 @@ void __init xics_init(void)
 	if (rc < 0)
 		rc = ics_opal_init();
 	if (rc < 0)
-		pr_warning("XICS: Cannot find a Source Controller !\n");
+		pr_warn("XICS: Cannot find a Source Controller !\n");
 
 	/* Initialize common bits */
 	xics_get_server_size();
diff --git a/arch/powerpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c
index a3b8d7d1316e..40c06110821c 100644
--- a/arch/powerpc/sysdev/xive/common.c
+++ b/arch/powerpc/sysdev/xive/common.c
@@ -367,7 +367,8 @@ static void xive_irq_eoi(struct irq_data *d)
 	 * EOI the source if it hasn't been disabled and hasn't
 	 * been passed-through to a KVM guest
 	 */
-	if (!irqd_irq_disabled(d) && !irqd_is_forwarded_to_vcpu(d))
+	if (!irqd_irq_disabled(d) && !irqd_is_forwarded_to_vcpu(d) &&
+	    !(xd->flags & XIVE_IRQ_NO_EOI))
 		xive_do_source_eoi(irqd_to_hwirq(d), xd);
 
 	/*
@@ -1269,11 +1270,6 @@ static void xive_setup_cpu(void)
 {
 	struct xive_cpu *xc = __this_cpu_read(xive_cpu);
 
-	/* Debug: Dump the TM state */
-	pr_devel("CPU %d [HW 0x%02x] VT=%02x\n",
-	    smp_processor_id(), hard_smp_processor_id(),
-	    in_8(xive_tima + xive_tima_offset + TM_WORD2));
-
 	/* The backend might have additional things to do */
 	if (xive_ops->setup_cpu)
 		xive_ops->setup_cpu(smp_processor_id(), xc);