Merge tag 'drm-intel-fixes-2015-07-15' into drm-intel-next-queued

Backmerge fixes since it's getting out of hand again with the massive
split due to atomic between -next and 4.2-rc. All the bugfixes in
4.2-rc are addressed already (by converting more towards atomic
instead of minimal duct-tape) so just always pick the version in next
for the conflicts in modeset code.

All the other conflicts are just adjacent lines changed.

Conflicts:
	drivers/gpu/drm/i915/i915_drv.h
	drivers/gpu/drm/i915/i915_gem_gtt.c
	drivers/gpu/drm/i915/intel_display.c
	drivers/gpu/drm/i915/intel_drv.h
	drivers/gpu/drm/i915/intel_ringbuffer.h

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

20 files changed, 138 insertions, 1531 deletions

diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index a4af8221751e..a043107da2af 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -590,14 +590,6 @@ config DEVPORT
 
 source "drivers/s390/char/Kconfig"
 
-config MSM_SMD_PKT
-	bool "Enable device interface for some SMD packet ports"
-	default n
-	depends on MSM_SMD
-	help
-	  Enables userspace clients to read and write to some packet SMD
-	  ports via device interface for MSM chipset.
-
 config TILE_SROM
 	bool "Character-device access via hypervisor to the Tilera SPI ROM"
 	depends on TILE
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index d06cde26031b..d8a7579300d2 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -9,7 +9,6 @@ obj-$(CONFIG_ATARI_DSP56K)	+= dsp56k.o
 obj-$(CONFIG_VIRTIO_CONSOLE)	+= virtio_console.o
 obj-$(CONFIG_RAW_DRIVER)	+= raw.o
 obj-$(CONFIG_SGI_SNSC)		+= snsc.o snsc_event.o
-obj-$(CONFIG_MSM_SMD_PKT)	+= msm_smd_pkt.o
 obj-$(CONFIG_MSPEC)		+= mspec.o
 obj-$(CONFIG_MMTIMER)		+= mmtimer.o
 obj-$(CONFIG_UV_MMTIMER)	+= uv_mmtimer.o
@@ -36,7 +35,6 @@ else
   obj-$(CONFIG_NVRAM)	+= nvram.o
 endif
 obj-$(CONFIG_TOSHIBA)		+= toshiba.o
-obj-$(CONFIG_I8K)		+= i8k.o
 obj-$(CONFIG_DS1620)		+= ds1620.o
 obj-$(CONFIG_HW_RANDOM)		+= hw_random/
 obj-$(CONFIG_PPDEV)		+= ppdev.o
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index 4734d02ca899..1341a94cc779 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -581,7 +581,7 @@ static inline int needs_ilk_vtd_wa(void)
 	/* Query intel_iommu to see if we need the workaround. Presumably that
 	 * was loaded first.
 	 */
-	if ((gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB ||
+	if ((gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_D_IG ||
 	     gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG) &&
 	     intel_iommu_gfx_mapped)
 		return 1;
diff --git a/drivers/char/hw_random/via-rng.c b/drivers/char/hw_random/via-rng.c
index a3bebef255ad..0c98a9d51a24 100644
--- a/drivers/char/hw_random/via-rng.c
+++ b/drivers/char/hw_random/via-rng.c
@@ -33,7 +33,7 @@
 #include <asm/io.h>
 #include <asm/msr.h>
 #include <asm/cpufeature.h>
-#include <asm/i387.h>
+#include <asm/fpu/api.h>
 
 
 
diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
deleted file mode 100644
index a43048b5b05f..000000000000
--- a/drivers/char/i8k.c
+++ /dev/null
@@ -1,1007 +0,0 @@
-/*
- * i8k.c -- Linux driver for accessing the SMM BIOS on Dell laptops.
- *
- * Copyright (C) 2001  Massimo Dal Zotto <dz@debian.org>
- *
- * Hwmon integration:
- * Copyright (C) 2011  Jean Delvare <jdelvare@suse.de>
- * Copyright (C) 2013, 2014  Guenter Roeck <linux@roeck-us.net>
- * Copyright (C) 2014  Pali Rohár <pali.rohar@gmail.com>
- *
- * 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.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/delay.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/dmi.h>
-#include <linux/capability.h>
-#include <linux/mutex.h>
-#include <linux/hwmon.h>
-#include <linux/hwmon-sysfs.h>
-#include <linux/uaccess.h>
-#include <linux/io.h>
-#include <linux/sched.h>
-
-#include <linux/i8k.h>
-
-#define I8K_SMM_FN_STATUS	0x0025
-#define I8K_SMM_POWER_STATUS	0x0069
-#define I8K_SMM_SET_FAN		0x01a3
-#define I8K_SMM_GET_FAN		0x00a3
-#define I8K_SMM_GET_SPEED	0x02a3
-#define I8K_SMM_GET_FAN_TYPE	0x03a3
-#define I8K_SMM_GET_NOM_SPEED	0x04a3
-#define I8K_SMM_GET_TEMP	0x10a3
-#define I8K_SMM_GET_TEMP_TYPE	0x11a3
-#define I8K_SMM_GET_DELL_SIG1	0xfea3
-#define I8K_SMM_GET_DELL_SIG2	0xffa3
-
-#define I8K_FAN_MULT		30
-#define I8K_FAN_MAX_RPM		30000
-#define I8K_MAX_TEMP		127
-
-#define I8K_FN_NONE		0x00
-#define I8K_FN_UP		0x01
-#define I8K_FN_DOWN		0x02
-#define I8K_FN_MUTE		0x04
-#define I8K_FN_MASK		0x07
-#define I8K_FN_SHIFT		8
-
-#define I8K_POWER_AC		0x05
-#define I8K_POWER_BATTERY	0x01
-
-static DEFINE_MUTEX(i8k_mutex);
-static char bios_version[4];
-static struct device *i8k_hwmon_dev;
-static u32 i8k_hwmon_flags;
-static uint i8k_fan_mult = I8K_FAN_MULT;
-static uint i8k_pwm_mult;
-static uint i8k_fan_max = I8K_FAN_HIGH;
-
-#define I8K_HWMON_HAVE_TEMP1	(1 << 0)
-#define I8K_HWMON_HAVE_TEMP2	(1 << 1)
-#define I8K_HWMON_HAVE_TEMP3	(1 << 2)
-#define I8K_HWMON_HAVE_TEMP4	(1 << 3)
-#define I8K_HWMON_HAVE_FAN1	(1 << 4)
-#define I8K_HWMON_HAVE_FAN2	(1 << 5)
-
-MODULE_AUTHOR("Massimo Dal Zotto (dz@debian.org)");
-MODULE_DESCRIPTION("Driver for accessing SMM BIOS on Dell laptops");
-MODULE_LICENSE("GPL");
-
-static bool force;
-module_param(force, bool, 0);
-MODULE_PARM_DESC(force, "Force loading without checking for supported models");
-
-static bool ignore_dmi;
-module_param(ignore_dmi, bool, 0);
-MODULE_PARM_DESC(ignore_dmi, "Continue probing hardware even if DMI data does not match");
-
-static bool restricted;
-module_param(restricted, bool, 0);
-MODULE_PARM_DESC(restricted, "Allow fan control if SYS_ADMIN capability set");
-
-static bool power_status;
-module_param(power_status, bool, 0600);
-MODULE_PARM_DESC(power_status, "Report power status in /proc/i8k");
-
-static uint fan_mult;
-module_param(fan_mult, uint, 0);
-MODULE_PARM_DESC(fan_mult, "Factor to multiply fan speed with (default: autodetect)");
-
-static uint fan_max;
-module_param(fan_max, uint, 0);
-MODULE_PARM_DESC(fan_max, "Maximum configurable fan speed (default: autodetect)");
-
-static int i8k_open_fs(struct inode *inode, struct file *file);
-static long i8k_ioctl(struct file *, unsigned int, unsigned long);
-
-static const struct file_operations i8k_fops = {
-	.owner		= THIS_MODULE,
-	.open		= i8k_open_fs,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-	.unlocked_ioctl	= i8k_ioctl,
-};
-
-struct smm_regs {
-	unsigned int eax;
-	unsigned int ebx __packed;
-	unsigned int ecx __packed;
-	unsigned int edx __packed;
-	unsigned int esi __packed;
-	unsigned int edi __packed;
-};
-
-static inline const char *i8k_get_dmi_data(int field)
-{
-	const char *dmi_data = dmi_get_system_info(field);
-
-	return dmi_data && *dmi_data ? dmi_data : "?";
-}
-
-/*
- * Call the System Management Mode BIOS. Code provided by Jonathan Buzzard.
- */
-static int i8k_smm(struct smm_regs *regs)
-{
-	int rc;
-	int eax = regs->eax;
-	cpumask_var_t old_mask;
-
-	/* SMM requires CPU 0 */
-	if (!alloc_cpumask_var(&old_mask, GFP_KERNEL))
-		return -ENOMEM;
-	cpumask_copy(old_mask, &current->cpus_allowed);
-	rc = set_cpus_allowed_ptr(current, cpumask_of(0));
-	if (rc)
-		goto out;
-	if (smp_processor_id() != 0) {
-		rc = -EBUSY;
-		goto out;
-	}
-
-#if defined(CONFIG_X86_64)
-	asm volatile("pushq %%rax\n\t"
-		"movl 0(%%rax),%%edx\n\t"
-		"pushq %%rdx\n\t"
-		"movl 4(%%rax),%%ebx\n\t"
-		"movl 8(%%rax),%%ecx\n\t"
-		"movl 12(%%rax),%%edx\n\t"
-		"movl 16(%%rax),%%esi\n\t"
-		"movl 20(%%rax),%%edi\n\t"
-		"popq %%rax\n\t"
-		"out %%al,$0xb2\n\t"
-		"out %%al,$0x84\n\t"
-		"xchgq %%rax,(%%rsp)\n\t"
-		"movl %%ebx,4(%%rax)\n\t"
-		"movl %%ecx,8(%%rax)\n\t"
-		"movl %%edx,12(%%rax)\n\t"
-		"movl %%esi,16(%%rax)\n\t"
-		"movl %%edi,20(%%rax)\n\t"
-		"popq %%rdx\n\t"
-		"movl %%edx,0(%%rax)\n\t"
-		"pushfq\n\t"
-		"popq %%rax\n\t"
-		"andl $1,%%eax\n"
-		: "=a"(rc)
-		:    "a"(regs)
-		:    "%ebx", "%ecx", "%edx", "%esi", "%edi", "memory");
-#else
-	asm volatile("pushl %%eax\n\t"
-	    "movl 0(%%eax),%%edx\n\t"
-	    "push %%edx\n\t"
-	    "movl 4(%%eax),%%ebx\n\t"
-	    "movl 8(%%eax),%%ecx\n\t"
-	    "movl 12(%%eax),%%edx\n\t"
-	    "movl 16(%%eax),%%esi\n\t"
-	    "movl 20(%%eax),%%edi\n\t"
-	    "popl %%eax\n\t"
-	    "out %%al,$0xb2\n\t"
-	    "out %%al,$0x84\n\t"
-	    "xchgl %%eax,(%%esp)\n\t"
-	    "movl %%ebx,4(%%eax)\n\t"
-	    "movl %%ecx,8(%%eax)\n\t"
-	    "movl %%edx,12(%%eax)\n\t"
-	    "movl %%esi,16(%%eax)\n\t"
-	    "movl %%edi,20(%%eax)\n\t"
-	    "popl %%edx\n\t"
-	    "movl %%edx,0(%%eax)\n\t"
-	    "lahf\n\t"
-	    "shrl $8,%%eax\n\t"
-	    "andl $1,%%eax\n"
-	    : "=a"(rc)
-	    :    "a"(regs)
-	    :    "%ebx", "%ecx", "%edx", "%esi", "%edi", "memory");
-#endif
-	if (rc != 0 || (regs->eax & 0xffff) == 0xffff || regs->eax == eax)
-		rc = -EINVAL;
-
-out:
-	set_cpus_allowed_ptr(current, old_mask);
-	free_cpumask_var(old_mask);
-	return rc;
-}
-
-/*
- * Read the Fn key status.
- */
-static int i8k_get_fn_status(void)
-{
-	struct smm_regs regs = { .eax = I8K_SMM_FN_STATUS, };
-	int rc;
-
-	rc = i8k_smm(&regs);
-	if (rc < 0)
-		return rc;
-
-	switch ((regs.eax >> I8K_FN_SHIFT) & I8K_FN_MASK) {
-	case I8K_FN_UP:
-		return I8K_VOL_UP;
-	case I8K_FN_DOWN:
-		return I8K_VOL_DOWN;
-	case I8K_FN_MUTE:
-		return I8K_VOL_MUTE;
-	default:
-		return 0;
-	}
-}
-
-/*
- * Read the power status.
- */
-static int i8k_get_power_status(void)
-{
-	struct smm_regs regs = { .eax = I8K_SMM_POWER_STATUS, };
-	int rc;
-
-	rc = i8k_smm(&regs);
-	if (rc < 0)
-		return rc;
-
-	return (regs.eax & 0xff) == I8K_POWER_AC ? I8K_AC : I8K_BATTERY;
-}
-
-/*
- * Read the fan status.
- */
-static int i8k_get_fan_status(int fan)
-{
-	struct smm_regs regs = { .eax = I8K_SMM_GET_FAN, };
-
-	regs.ebx = fan & 0xff;
-	return i8k_smm(&regs) ? : regs.eax & 0xff;
-}
-
-/*
- * Read the fan speed in RPM.
- */
-static int i8k_get_fan_speed(int fan)
-{
-	struct smm_regs regs = { .eax = I8K_SMM_GET_SPEED, };
-
-	regs.ebx = fan & 0xff;
-	return i8k_smm(&regs) ? : (regs.eax & 0xffff) * i8k_fan_mult;
-}
-
-/*
- * Read the fan type.
- */
-static int i8k_get_fan_type(int fan)
-{
-	struct smm_regs regs = { .eax = I8K_SMM_GET_FAN_TYPE, };
-
-	regs.ebx = fan & 0xff;
-	return i8k_smm(&regs) ? : regs.eax & 0xff;
-}
-
-/*
- * Read the fan nominal rpm for specific fan speed.
- */
-static int i8k_get_fan_nominal_speed(int fan, int speed)
-{
-	struct smm_regs regs = { .eax = I8K_SMM_GET_NOM_SPEED, };
-
-	regs.ebx = (fan & 0xff) | (speed << 8);
-	return i8k_smm(&regs) ? : (regs.eax & 0xffff) * i8k_fan_mult;
-}
-
-/*
- * Set the fan speed (off, low, high). Returns the new fan status.
- */
-static int i8k_set_fan(int fan, int speed)
-{
-	struct smm_regs regs = { .eax = I8K_SMM_SET_FAN, };
-
-	speed = (speed < 0) ? 0 : ((speed > i8k_fan_max) ? i8k_fan_max : speed);
-	regs.ebx = (fan & 0xff) | (speed << 8);
-
-	return i8k_smm(&regs) ? : i8k_get_fan_status(fan);
-}
-
-static int i8k_get_temp_type(int sensor)
-{
-	struct smm_regs regs = { .eax = I8K_SMM_GET_TEMP_TYPE, };
-
-	regs.ebx = sensor & 0xff;
-	return i8k_smm(&regs) ? : regs.eax & 0xff;
-}
-
-/*
- * Read the cpu temperature.
- */
-static int _i8k_get_temp(int sensor)
-{
-	struct smm_regs regs = {
-		.eax = I8K_SMM_GET_TEMP,
-		.ebx = sensor & 0xff,
-	};
-
-	return i8k_smm(&regs) ? : regs.eax & 0xff;
-}
-
-static int i8k_get_temp(int sensor)
-{
-	int temp = _i8k_get_temp(sensor);
-
-	/*
-	 * Sometimes the temperature sensor returns 0x99, which is out of range.
-	 * In this case we retry (once) before returning an error.
-	 # 1003655137 00000058 00005a4b
-	 # 1003655138 00000099 00003a80 <--- 0x99 = 153 degrees
-	 # 1003655139 00000054 00005c52
-	 */
-	if (temp == 0x99) {
-		msleep(100);
-		temp = _i8k_get_temp(sensor);
-	}
-	/*
-	 * Return -ENODATA for all invalid temperatures.
-	 *
-	 * Known instances are the 0x99 value as seen above as well as
-	 * 0xc1 (193), which may be returned when trying to read the GPU
-	 * temperature if the system supports a GPU and it is currently
-	 * turned off.
-	 */
-	if (temp > I8K_MAX_TEMP)
-		return -ENODATA;
-
-	return temp;
-}
-
-static int i8k_get_dell_signature(int req_fn)
-{
-	struct smm_regs regs = { .eax = req_fn, };
-	int rc;
-
-	rc = i8k_smm(&regs);
-	if (rc < 0)
-		return rc;
-
-	return regs.eax == 1145651527 && regs.edx == 1145392204 ? 0 : -1;
-}
-
-static int
-i8k_ioctl_unlocked(struct file *fp, unsigned int cmd, unsigned long arg)
-{
-	int val = 0;
-	int speed;
-	unsigned char buff[16];
-	int __user *argp = (int __user *)arg;
-
-	if (!argp)
-		return -EINVAL;
-
-	switch (cmd) {
-	case I8K_BIOS_VERSION:
-		val = (bios_version[0] << 16) |
-				(bios_version[1] << 8) | bios_version[2];
-		break;
-
-	case I8K_MACHINE_ID:
-		memset(buff, 0, 16);
-		strlcpy(buff, i8k_get_dmi_data(DMI_PRODUCT_SERIAL),
-			sizeof(buff));
-		break;
-
-	case I8K_FN_STATUS:
-		val = i8k_get_fn_status();
-		break;
-
-	case I8K_POWER_STATUS:
-		val = i8k_get_power_status();
-		break;
-
-	case I8K_GET_TEMP:
-		val = i8k_get_temp(0);
-		break;
-
-	case I8K_GET_SPEED:
-		if (copy_from_user(&val, argp, sizeof(int)))
-			return -EFAULT;
-
-		val = i8k_get_fan_speed(val);
-		break;
-
-	case I8K_GET_FAN:
-		if (copy_from_user(&val, argp, sizeof(int)))
-			return -EFAULT;
-
-		val = i8k_get_fan_status(val);
-		break;
-
-	case I8K_SET_FAN:
-		if (restricted && !capable(CAP_SYS_ADMIN))
-			return -EPERM;
-
-		if (copy_from_user(&val, argp, sizeof(int)))
-			return -EFAULT;
-
-		if (copy_from_user(&speed, argp + 1, sizeof(int)))
-			return -EFAULT;
-
-		val = i8k_set_fan(val, speed);
-		break;
-
-	default:
-		return -EINVAL;
-	}
-
-	if (val < 0)
-		return val;
-
-	switch (cmd) {
-	case I8K_BIOS_VERSION:
-		if (copy_to_user(argp, &val, 4))
-			return -EFAULT;
-
-		break;
-	case I8K_MACHINE_ID:
-		if (copy_to_user(argp, buff, 16))
-			return -EFAULT;
-
-		break;
-	default:
-		if (copy_to_user(argp, &val, sizeof(int)))
-			return -EFAULT;
-
-		break;
-	}
-
-	return 0;
-}
-
-static long i8k_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
-{
-	long ret;
-
-	mutex_lock(&i8k_mutex);
-	ret = i8k_ioctl_unlocked(fp, cmd, arg);
-	mutex_unlock(&i8k_mutex);
-
-	return ret;
-}
-
-/*
- * Print the information for /proc/i8k.
- */
-static int i8k_proc_show(struct seq_file *seq, void *offset)
-{
-	int fn_key, cpu_temp, ac_power;
-	int left_fan, right_fan, left_speed, right_speed;
-
-	cpu_temp	= i8k_get_temp(0);			/* 11100 µs */
-	left_fan	= i8k_get_fan_status(I8K_FAN_LEFT);	/*   580 µs */
-	right_fan	= i8k_get_fan_status(I8K_FAN_RIGHT);	/*   580 µs */
-	left_speed	= i8k_get_fan_speed(I8K_FAN_LEFT);	/*   580 µs */
-	right_speed	= i8k_get_fan_speed(I8K_FAN_RIGHT);	/*   580 µs */
-	fn_key		= i8k_get_fn_status();			/*   750 µs */
-	if (power_status)
-		ac_power = i8k_get_power_status();		/* 14700 µs */
-	else
-		ac_power = -1;
-
-	/*
-	 * Info:
-	 *
-	 * 1)  Format version (this will change if format changes)
-	 * 2)  BIOS version
-	 * 3)  BIOS machine ID
-	 * 4)  Cpu temperature
-	 * 5)  Left fan status
-	 * 6)  Right fan status
-	 * 7)  Left fan speed
-	 * 8)  Right fan speed
-	 * 9)  AC power
-	 * 10) Fn Key status
-	 */
-	seq_printf(seq, "%s %s %s %d %d %d %d %d %d %d\n",
-		   I8K_PROC_FMT,
-		   bios_version,
-		   i8k_get_dmi_data(DMI_PRODUCT_SERIAL),
-		   cpu_temp,
-		   left_fan, right_fan, left_speed, right_speed,
-		   ac_power, fn_key);
-
-	return 0;
-}
-
-static int i8k_open_fs(struct inode *inode, struct file *file)
-{
-	return single_open(file, i8k_proc_show, NULL);
-}
-
-
-/*
- * Hwmon interface
- */
-
-static ssize_t i8k_hwmon_show_temp_label(struct device *dev,
-					 struct device_attribute *devattr,
-					 char *buf)
-{
-	static const char * const labels[] = {
-		"CPU",
-		"GPU",
-		"SODIMM",
-		"Other",
-		"Ambient",
-		"Other",
-	};
-	int index = to_sensor_dev_attr(devattr)->index;
-	int type;
-
-	type = i8k_get_temp_type(index);
-	if (type < 0)
-		return type;
-	if (type >= ARRAY_SIZE(labels))
-		type = ARRAY_SIZE(labels) - 1;
-	return sprintf(buf, "%s\n", labels[type]);
-}
-
-static ssize_t i8k_hwmon_show_temp(struct device *dev,
-				   struct device_attribute *devattr,
-				   char *buf)
-{
-	int index = to_sensor_dev_attr(devattr)->index;
-	int temp;
-
-	temp = i8k_get_temp(index);
-	if (temp < 0)
-		return temp;
-	return sprintf(buf, "%d\n", temp * 1000);
-}
-
-static ssize_t i8k_hwmon_show_fan_label(struct device *dev,
-					struct device_attribute *devattr,
-					char *buf)
-{
-	static const char * const labels[] = {
-		"Processor Fan",
-		"Motherboard Fan",
-		"Video Fan",
-		"Power Supply Fan",
-		"Chipset Fan",
-		"Other Fan",
-	};
-	int index = to_sensor_dev_attr(devattr)->index;
-	bool dock = false;
-	int type;
-
-	type = i8k_get_fan_type(index);
-	if (type < 0)
-		return type;
-
-	if (type & 0x10) {
-		dock = true;
-		type &= 0x0F;
-	}
-
-	if (type >= ARRAY_SIZE(labels))
-		type = (ARRAY_SIZE(labels) - 1);
-
-	return sprintf(buf, "%s%s\n", (dock ? "Docking " : ""), labels[type]);
-}
-
-static ssize_t i8k_hwmon_show_fan(struct device *dev,
-				  struct device_attribute *devattr,
-				  char *buf)
-{
-	int index = to_sensor_dev_attr(devattr)->index;
-	int fan_speed;
-
-	fan_speed = i8k_get_fan_speed(index);
-	if (fan_speed < 0)
-		return fan_speed;
-	return sprintf(buf, "%d\n", fan_speed);
-}
-
-static ssize_t i8k_hwmon_show_pwm(struct device *dev,
-				  struct device_attribute *devattr,
-				  char *buf)
-{
-	int index = to_sensor_dev_attr(devattr)->index;
-	int status;
-
-	status = i8k_get_fan_status(index);
-	if (status < 0)
-		return -EIO;
-	return sprintf(buf, "%d\n", clamp_val(status * i8k_pwm_mult, 0, 255));
-}
-
-static ssize_t i8k_hwmon_set_pwm(struct device *dev,
-				 struct device_attribute *attr,
-				 const char *buf, size_t count)
-{
-	int index = to_sensor_dev_attr(attr)->index;
-	unsigned long val;
-	int err;
-
-	err = kstrtoul(buf, 10, &val);
-	if (err)
-		return err;
-	val = clamp_val(DIV_ROUND_CLOSEST(val, i8k_pwm_mult), 0, i8k_fan_max);
-
-	mutex_lock(&i8k_mutex);
-	err = i8k_set_fan(index, val);
-	mutex_unlock(&i8k_mutex);
-
-	return err < 0 ? -EIO : count;
-}
-
-static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, i8k_hwmon_show_temp, NULL, 0);
-static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, i8k_hwmon_show_temp_label, NULL,
-			  0);
-static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, i8k_hwmon_show_temp, NULL, 1);
-static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, i8k_hwmon_show_temp_label, NULL,
-			  1);
-static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, i8k_hwmon_show_temp, NULL, 2);
-static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, i8k_hwmon_show_temp_label, NULL,
-			  2);
-static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, i8k_hwmon_show_temp, NULL, 3);
-static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, i8k_hwmon_show_temp_label, NULL,
-			  3);
-static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, i8k_hwmon_show_fan, NULL, 0);
-static SENSOR_DEVICE_ATTR(fan1_label, S_IRUGO, i8k_hwmon_show_fan_label, NULL,
-			  0);
-static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, i8k_hwmon_show_pwm,
-			  i8k_hwmon_set_pwm, 0);
-static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, i8k_hwmon_show_fan, NULL,
-			  1);
-static SENSOR_DEVICE_ATTR(fan2_label, S_IRUGO, i8k_hwmon_show_fan_label, NULL,
-			  1);
-static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, i8k_hwmon_show_pwm,
-			  i8k_hwmon_set_pwm, 1);
-
-static struct attribute *i8k_attrs[] = {
-	&sensor_dev_attr_temp1_input.dev_attr.attr,	/* 0 */
-	&sensor_dev_attr_temp1_label.dev_attr.attr,	/* 1 */
-	&sensor_dev_attr_temp2_input.dev_attr.attr,	/* 2 */
-	&sensor_dev_attr_temp2_label.dev_attr.attr,	/* 3 */
-	&sensor_dev_attr_temp3_input.dev_attr.attr,	/* 4 */
-	&sensor_dev_attr_temp3_label.dev_attr.attr,	/* 5 */
-	&sensor_dev_attr_temp4_input.dev_attr.attr,	/* 6 */
-	&sensor_dev_attr_temp4_label.dev_attr.attr,	/* 7 */
-	&sensor_dev_attr_fan1_input.dev_attr.attr,	/* 8 */
-	&sensor_dev_attr_fan1_label.dev_attr.attr,	/* 9 */
-	&sensor_dev_attr_pwm1.dev_attr.attr,		/* 10 */
-	&sensor_dev_attr_fan2_input.dev_attr.attr,	/* 11 */
-	&sensor_dev_attr_fan2_label.dev_attr.attr,	/* 12 */
-	&sensor_dev_attr_pwm2.dev_attr.attr,		/* 13 */
-	NULL
-};
-
-static umode_t i8k_is_visible(struct kobject *kobj, struct attribute *attr,
-			      int index)
-{
-	if (index >= 0 && index <= 1 &&
-	    !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP1))
-		return 0;
-	if (index >= 2 && index <= 3 &&
-	    !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP2))
-		return 0;
-	if (index >= 4 && index <= 5 &&
-	    !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP3))
-		return 0;
-	if (index >= 6 && index <= 7 &&
-	    !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP4))
-		return 0;
-	if (index >= 8 && index <= 10 &&
-	    !(i8k_hwmon_flags & I8K_HWMON_HAVE_FAN1))
-		return 0;
-	if (index >= 11 && index <= 13 &&
-	    !(i8k_hwmon_flags & I8K_HWMON_HAVE_FAN2))
-		return 0;
-
-	return attr->mode;
-}
-
-static const struct attribute_group i8k_group = {
-	.attrs = i8k_attrs,
-	.is_visible = i8k_is_visible,
-};
-__ATTRIBUTE_GROUPS(i8k);
-
-static int __init i8k_init_hwmon(void)
-{
-	int err;
-
-	i8k_hwmon_flags = 0;
-
-	/* CPU temperature attributes, if temperature type is OK */
-	err = i8k_get_temp_type(0);
-	if (err >= 0)
-		i8k_hwmon_flags |= I8K_HWMON_HAVE_TEMP1;
-	/* check for additional temperature sensors */
-	err = i8k_get_temp_type(1);
-	if (err >= 0)
-		i8k_hwmon_flags |= I8K_HWMON_HAVE_TEMP2;
-	err = i8k_get_temp_type(2);
-	if (err >= 0)
-		i8k_hwmon_flags |= I8K_HWMON_HAVE_TEMP3;
-	err = i8k_get_temp_type(3);
-	if (err >= 0)
-		i8k_hwmon_flags |= I8K_HWMON_HAVE_TEMP4;
-
-	/* First fan attributes, if fan type is OK */
-	err = i8k_get_fan_type(0);
-	if (err >= 0)
-		i8k_hwmon_flags |= I8K_HWMON_HAVE_FAN1;
-
-	/* Second fan attributes, if fan type is OK */
-	err = i8k_get_fan_type(1);
-	if (err >= 0)
-		i8k_hwmon_flags |= I8K_HWMON_HAVE_FAN2;
-
-	i8k_hwmon_dev = hwmon_device_register_with_groups(NULL, "i8k", NULL,
-							  i8k_groups);
-	if (IS_ERR(i8k_hwmon_dev)) {
-		err = PTR_ERR(i8k_hwmon_dev);
-		i8k_hwmon_dev = NULL;
-		pr_err("hwmon registration failed (%d)\n", err);
-		return err;
-	}
-	return 0;
-}
-
-struct i8k_config_data {
-	uint fan_mult;
-	uint fan_max;
-};
-
-enum i8k_configs {
-	DELL_LATITUDE_D520,
-	DELL_PRECISION_490,
-	DELL_STUDIO,
-	DELL_XPS,
-};
-
-static const struct i8k_config_data i8k_config_data[] = {
-	[DELL_LATITUDE_D520] = {
-		.fan_mult = 1,
-		.fan_max = I8K_FAN_TURBO,
-	},
-	[DELL_PRECISION_490] = {
-		.fan_mult = 1,
-		.fan_max = I8K_FAN_TURBO,
-	},
-	[DELL_STUDIO] = {
-		.fan_mult = 1,
-		.fan_max = I8K_FAN_HIGH,
-	},
-	[DELL_XPS] = {
-		.fan_mult = 1,
-		.fan_max = I8K_FAN_HIGH,
-	},
-};
-
-static struct dmi_system_id i8k_dmi_table[] __initdata = {
-	{
-		.ident = "Dell Inspiron",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron"),
-		},
-	},
-	{
-		.ident = "Dell Latitude",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "Latitude"),
-		},
-	},
-	{
-		.ident = "Dell Inspiron 2",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
-			DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron"),
-		},
-	},
-	{
-		.ident = "Dell Latitude D520",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
-			DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D520"),
-		},
-		.driver_data = (void *)&i8k_config_data[DELL_LATITUDE_D520],
-	},
-	{
-		.ident = "Dell Latitude 2",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
-			DMI_MATCH(DMI_PRODUCT_NAME, "Latitude"),
-		},
-	},
-	{	/* UK Inspiron 6400  */
-		.ident = "Dell Inspiron 3",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
-			DMI_MATCH(DMI_PRODUCT_NAME, "MM061"),
-		},
-	},
-	{
-		.ident = "Dell Inspiron 3",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
-			DMI_MATCH(DMI_PRODUCT_NAME, "MP061"),
-		},
-	},
-	{
-		.ident = "Dell Precision 490",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
-			DMI_MATCH(DMI_PRODUCT_NAME,
-				  "Precision WorkStation 490"),
-		},
-		.driver_data = (void *)&i8k_config_data[DELL_PRECISION_490],
-	},
-	{
-		.ident = "Dell Precision",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
-			DMI_MATCH(DMI_PRODUCT_NAME, "Precision"),
-		},
-	},
-	{
-		.ident = "Dell Vostro",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
-			DMI_MATCH(DMI_PRODUCT_NAME, "Vostro"),
-		},
-	},
-	{
-		.ident = "Dell XPS421",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
-			DMI_MATCH(DMI_PRODUCT_NAME, "XPS L421X"),
-		},
-	},
-	{
-		.ident = "Dell Studio",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
-			DMI_MATCH(DMI_PRODUCT_NAME, "Studio"),
-		},
-		.driver_data = (void *)&i8k_config_data[DELL_STUDIO],
-	},
-	{
-		.ident = "Dell XPS 13",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
-			DMI_MATCH(DMI_PRODUCT_NAME, "XPS13"),
-		},
-		.driver_data = (void *)&i8k_config_data[DELL_XPS],
-	},
-	{
-		.ident = "Dell XPS M140",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
-			DMI_MATCH(DMI_PRODUCT_NAME, "MXC051"),
-		},
-		.driver_data = (void *)&i8k_config_data[DELL_XPS],
-	},
-	{ }
-};
-
-MODULE_DEVICE_TABLE(dmi, i8k_dmi_table);
-
-/*
- * Probe for the presence of a supported laptop.
- */
-static int __init i8k_probe(void)
-{
-	const struct dmi_system_id *id;
-	int fan, ret;
-
-	/*
-	 * Get DMI information
-	 */
-	if (!dmi_check_system(i8k_dmi_table)) {
-		if (!ignore_dmi && !force)
-			return -ENODEV;
-
-		pr_info("not running on a supported Dell system.\n");
-		pr_info("vendor=%s, model=%s, version=%s\n",
-			i8k_get_dmi_data(DMI_SYS_VENDOR),
-			i8k_get_dmi_data(DMI_PRODUCT_NAME),
-			i8k_get_dmi_data(DMI_BIOS_VERSION));
-	}
-
-	strlcpy(bios_version, i8k_get_dmi_data(DMI_BIOS_VERSION),
-		sizeof(bios_version));
-
-	/*
-	 * Get SMM Dell signature
-	 */
-	if (i8k_get_dell_signature(I8K_SMM_GET_DELL_SIG1) &&
-	    i8k_get_dell_signature(I8K_SMM_GET_DELL_SIG2)) {
-		pr_err("unable to get SMM Dell signature\n");
-		if (!force)
-			return -ENODEV;
-	}
-
-	/*
-	 * Set fan multiplier and maximal fan speed from dmi config
-	 * Values specified in module parameters override values from dmi
-	 */
-	id = dmi_first_match(i8k_dmi_table);
-	if (id && id->driver_data) {
-		const struct i8k_config_data *conf = id->driver_data;
-		if (!fan_mult && conf->fan_mult)
-			fan_mult = conf->fan_mult;
-		if (!fan_max && conf->fan_max)
-			fan_max = conf->fan_max;
-	}
-
-	i8k_fan_max = fan_max ? : I8K_FAN_HIGH;	/* Must not be 0 */
-	i8k_pwm_mult = DIV_ROUND_UP(255, i8k_fan_max);
-
-	if (!fan_mult) {
-		/*
-		 * Autodetect fan multiplier based on nominal rpm
-		 * If fan reports rpm value too high then set multiplier to 1
-		 */
-		for (fan = 0; fan < 2; ++fan) {
-			ret = i8k_get_fan_nominal_speed(fan, i8k_fan_max);
-			if (ret < 0)
-				continue;
-			if (ret > I8K_FAN_MAX_RPM)
-				i8k_fan_mult = 1;
-			break;
-		}
-	} else {
-		/* Fan multiplier was specified in module param or in dmi */
-		i8k_fan_mult = fan_mult;
-	}
-
-	return 0;
-}
-
-static int __init i8k_init(void)
-{
-	struct proc_dir_entry *proc_i8k;
-	int err;
-
-	/* Are we running on an supported laptop? */
-	if (i8k_probe())
-		return -ENODEV;
-
-	/* Register the proc entry */
-	proc_i8k = proc_create("i8k", 0, NULL, &i8k_fops);
-	if (!proc_i8k)
-		return -ENOENT;
-
-	err = i8k_init_hwmon();
-	if (err)
-		goto exit_remove_proc;
-
-	return 0;
-
- exit_remove_proc:
-	remove_proc_entry("i8k", NULL);
-	return err;
-}
-
-static void __exit i8k_exit(void)
-{
-	hwmon_device_unregister(i8k_hwmon_dev);
-	remove_proc_entry("i8k", NULL);
-}
-
-module_init(i8k_init);
-module_exit(i8k_exit);
diff --git a/drivers/char/ipmi/ipmi_powernv.c b/drivers/char/ipmi/ipmi_powernv.c
index 8753b0f6a317..9b409c0f14f7 100644
--- a/drivers/char/ipmi/ipmi_powernv.c
+++ b/drivers/char/ipmi/ipmi_powernv.c
@@ -15,6 +15,8 @@
 #include <linux/list.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/interrupt.h>
 
 #include <asm/opal.h>
 
@@ -23,8 +25,7 @@ struct ipmi_smi_powernv {
 	u64			interface_id;
 	struct ipmi_device_id	ipmi_id;
 	ipmi_smi_t		intf;
-	u64			event;
-	struct notifier_block	event_nb;
+	unsigned int		irq;
 
 	/**
 	 * We assume that there can only be one outstanding request, so
@@ -197,15 +198,12 @@ static struct ipmi_smi_handlers ipmi_powernv_smi_handlers = {
 	.poll			= ipmi_powernv_poll,
 };
 
-static int ipmi_opal_event(struct notifier_block *nb,
-			  unsigned long events, void *change)
+static irqreturn_t ipmi_opal_event(int irq, void *data)
 {
-	struct ipmi_smi_powernv *smi = container_of(nb,
-					struct ipmi_smi_powernv, event_nb);
+	struct ipmi_smi_powernv *smi = data;
 
-	if (events & smi->event)
-		ipmi_powernv_recv(smi);
-	return 0;
+	ipmi_powernv_recv(smi);
+	return IRQ_HANDLED;
 }
 
 static int ipmi_powernv_probe(struct platform_device *pdev)
@@ -240,13 +238,16 @@ static int ipmi_powernv_probe(struct platform_device *pdev)
 		goto err_free;
 	}
 
-	ipmi->event = 1ull << prop;
-	ipmi->event_nb.notifier_call = ipmi_opal_event;
+	ipmi->irq = irq_of_parse_and_map(dev->of_node, 0);
+	if (!ipmi->irq) {
+		dev_info(dev, "Unable to map irq from device tree\n");
+		ipmi->irq = opal_event_request(prop);
+	}
 
-	rc = opal_notifier_register(&ipmi->event_nb);
-	if (rc) {
-		dev_warn(dev, "OPAL notifier registration failed (%d)\n", rc);
-		goto err_free;
+	if (request_irq(ipmi->irq, ipmi_opal_event, IRQ_TYPE_LEVEL_HIGH,
+				"opal-ipmi", ipmi)) {
+		dev_warn(dev, "Unable to request irq\n");
+		goto err_dispose;
 	}
 
 	ipmi->opal_msg = devm_kmalloc(dev,
@@ -271,7 +272,9 @@ static int ipmi_powernv_probe(struct platform_device *pdev)
 err_free_msg:
 	devm_kfree(dev, ipmi->opal_msg);
 err_unregister:
-	opal_notifier_unregister(&ipmi->event_nb);
+	free_irq(ipmi->irq, ipmi);
+err_dispose:
+	irq_dispose_mapping(ipmi->irq);
 err_free:
 	devm_kfree(dev, ipmi);
 	return rc;
@@ -282,7 +285,9 @@ static int ipmi_powernv_remove(struct platform_device *pdev)
 	struct ipmi_smi_powernv *smi = dev_get_drvdata(&pdev->dev);
 
 	ipmi_unregister_smi(smi->intf);
-	opal_notifier_unregister(&smi->event_nb);
+	free_irq(smi->irq, smi);
+	irq_dispose_mapping(smi->irq);
+
 	return 0;
 }
 
diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
index 37b8be7cba95..0ac3bd1a5497 100644
--- a/drivers/char/ipmi/ipmi_watchdog.c
+++ b/drivers/char/ipmi/ipmi_watchdog.c
@@ -208,7 +208,7 @@ static int set_param_timeout(const char *val, const struct kernel_param *kp)
 	return rv;
 }
 
-static struct kernel_param_ops param_ops_timeout = {
+static const struct kernel_param_ops param_ops_timeout = {
 	.set = set_param_timeout,
 	.get = param_get_int,
 };
@@ -270,14 +270,14 @@ static int set_param_wdog_ifnum(const char *val, const struct kernel_param *kp)
 	return 0;
 }
 
-static struct kernel_param_ops param_ops_wdog_ifnum = {
+static const struct kernel_param_ops param_ops_wdog_ifnum = {
 	.set = set_param_wdog_ifnum,
 	.get = param_get_int,
 };
 
 #define param_check_wdog_ifnum param_check_int
 
-static struct kernel_param_ops param_ops_str = {
+static const struct kernel_param_ops param_ops_str = {
 	.set = set_param_str,
 	.get = get_param_str,
 };
diff --git a/drivers/char/misc.c b/drivers/char/misc.c
index 9fd5a91e0d81..fdb0f9b3fe45 100644
--- a/drivers/char/misc.c
+++ b/drivers/char/misc.c
@@ -117,14 +117,14 @@ static int misc_open(struct inode * inode, struct file * file)
 	const struct file_operations *new_fops = NULL;
 
 	mutex_lock(&misc_mtx);
-	
+
 	list_for_each_entry(c, &misc_list, list) {
 		if (c->minor == minor) {
-			new_fops = fops_get(c->fops);		
+			new_fops = fops_get(c->fops);
 			break;
 		}
 	}
-		
+
 	if (!new_fops) {
 		mutex_unlock(&misc_mtx);
 		request_module("char-major-%d-%d", MISC_MAJOR, minor);
@@ -167,7 +167,7 @@ static const struct file_operations misc_fops = {
 /**
  *	misc_register	-	register a miscellaneous device
  *	@misc: device structure
- *	
+ *
  *	Register a miscellaneous device with the kernel. If the minor
  *	number is set to %MISC_DYNAMIC_MINOR a minor number is assigned
  *	and placed in the minor field of the structure. For other cases
@@ -181,17 +181,18 @@ static const struct file_operations misc_fops = {
  *	A zero is returned on success and a negative errno code for
  *	failure.
  */
- 
+
 int misc_register(struct miscdevice * misc)
 {
 	dev_t dev;
 	int err = 0;
+	bool is_dynamic = (misc->minor == MISC_DYNAMIC_MINOR);
 
 	INIT_LIST_HEAD(&misc->list);
 
 	mutex_lock(&misc_mtx);
 
-	if (misc->minor == MISC_DYNAMIC_MINOR) {
+	if (is_dynamic) {
 		int i = find_first_zero_bit(misc_minors, DYNAMIC_MINORS);
 		if (i >= DYNAMIC_MINORS) {
 			err = -EBUSY;
@@ -216,9 +217,13 @@ int misc_register(struct miscdevice * misc)
 		device_create_with_groups(misc_class, misc->parent, dev,
 					  misc, misc->groups, "%s", misc->name);
 	if (IS_ERR(misc->this_device)) {
-		int i = DYNAMIC_MINORS - misc->minor - 1;
-		if (i < DYNAMIC_MINORS && i >= 0)
-			clear_bit(i, misc_minors);
+		if (is_dynamic) {
+			int i = DYNAMIC_MINORS - misc->minor - 1;
+
+			if (i < DYNAMIC_MINORS && i >= 0)
+				clear_bit(i, misc_minors);
+			misc->minor = MISC_DYNAMIC_MINOR;
+		}
 		err = PTR_ERR(misc->this_device);
 		goto out;
 	}
diff --git a/drivers/char/msm_smd_pkt.c b/drivers/char/msm_smd_pkt.c
deleted file mode 100644
index ba82a06d9684..000000000000
--- a/drivers/char/msm_smd_pkt.c
+++ /dev/null
@@ -1,465 +0,0 @@
-/* Copyright (c) 2008-2010, Code Aurora Forum. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- */
-/*
- * SMD Packet Driver -- Provides userspace interface to SMD packet ports.
- */
-
-#include <linux/slab.h>
-#include <linux/cdev.h>
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/device.h>
-#include <linux/sched.h>
-#include <linux/mutex.h>
-#include <linux/delay.h>
-#include <linux/uaccess.h>
-#include <linux/workqueue.h>
-#include <linux/poll.h>
-
-#include <mach/msm_smd.h>
-
-#define NUM_SMD_PKT_PORTS 9
-#define DEVICE_NAME "smdpkt"
-#define MAX_BUF_SIZE 2048
-
-struct smd_pkt_dev {
-	struct cdev cdev;
-	struct device *devicep;
-
-	struct smd_channel *ch;
-	int open_count;
-	struct mutex ch_lock;
-	struct mutex rx_lock;
-	struct mutex tx_lock;
-	wait_queue_head_t ch_read_wait_queue;
-	wait_queue_head_t ch_opened_wait_queue;
-
-	int i;
-
-	unsigned char tx_buf[MAX_BUF_SIZE];
-	unsigned char rx_buf[MAX_BUF_SIZE];
-	int remote_open;
-
-} *smd_pkt_devp[NUM_SMD_PKT_PORTS];
-
-struct class *smd_pkt_classp;
-static dev_t smd_pkt_number;
-
-static int msm_smd_pkt_debug_enable;
-module_param_named(debug_enable, msm_smd_pkt_debug_enable,
-		   int, S_IRUGO | S_IWUSR | S_IWGRP);
-
-#ifdef DEBUG
-#define D_DUMP_BUFFER(prestr, cnt, buf) do {			\
-		int i;						\
-		if (msm_smd_pkt_debug_enable) {			\
-			pr_debug("%s", prestr);			\
-			for (i = 0; i < cnt; i++)		\
-				pr_debug("%.2x", buf[i]);	\
-			pr_debug("\n");				\
-		}						\
-	} while (0)
-#else
-#define D_DUMP_BUFFER(prestr, cnt, buf) do {} while (0)
-#endif
-
-#ifdef DEBUG
-#define DBG(x...) do {			\
-	if (msm_smd_pkt_debug_enable)	\
-		pr_debug(x);		\
-	} while (0)
-#else
-#define DBG(x...) do {} while (0)
-#endif
-
-static void check_and_wakeup_reader(struct smd_pkt_dev *smd_pkt_devp)
-{
-	int sz;
-
-	if (!smd_pkt_devp || !smd_pkt_devp->ch)
-		return;
-
-	sz = smd_cur_packet_size(smd_pkt_devp->ch);
-	if (sz == 0) {
-		DBG("no packet\n");
-		return;
-	}
-	if (sz > smd_read_avail(smd_pkt_devp->ch)) {
-		DBG("incomplete packet\n");
-		return;
-	}
-
-	DBG("waking up reader\n");
-	wake_up_interruptible(&smd_pkt_devp->ch_read_wait_queue);
-}
-
-static int smd_pkt_read(struct file *file, char __user *buf,
-			size_t count, loff_t *ppos)
-{
-	int r, bytes_read;
-	struct smd_pkt_dev *smd_pkt_devp;
-	struct smd_channel *chl;
-
-	DBG("read %d bytes\n", count);
-	if (count > MAX_BUF_SIZE)
-		return -EINVAL;
-
-	smd_pkt_devp = file->private_data;
-	if (!smd_pkt_devp || !smd_pkt_devp->ch)
-		return -EINVAL;
-
-	chl = smd_pkt_devp->ch;
-wait_for_packet:
-	r = wait_event_interruptible(smd_pkt_devp->ch_read_wait_queue,
-				     (smd_cur_packet_size(chl) > 0 &&
-				      smd_read_avail(chl) >=
-				      smd_cur_packet_size(chl)));
-
-	if (r < 0) {
-		if (r != -ERESTARTSYS)
-			pr_err("wait returned %d\n", r);
-		return r;
-	}
-
-	mutex_lock(&smd_pkt_devp->rx_lock);
-
-	bytes_read = smd_cur_packet_size(smd_pkt_devp->ch);
-	if (bytes_read == 0 ||
-	    bytes_read < smd_read_avail(smd_pkt_devp->ch)) {
-		mutex_unlock(&smd_pkt_devp->rx_lock);
-		DBG("Nothing to read\n");
-		goto wait_for_packet;
-	}
-
-	if (bytes_read > count) {
-		mutex_unlock(&smd_pkt_devp->rx_lock);
-		pr_info("packet size %d > buffer size %d", bytes_read, count);
-		return -EINVAL;
-	}
-
-	r = smd_read(smd_pkt_devp->ch, smd_pkt_devp->rx_buf, bytes_read);
-	if (r != bytes_read) {
-		mutex_unlock(&smd_pkt_devp->rx_lock);
-		pr_err("smd_read failed to read %d bytes: %d\n", bytes_read, r);
-		return -EIO;
-	}
-
-	D_DUMP_BUFFER("read: ", bytes_read, smd_pkt_devp->rx_buf);
-	r = copy_to_user(buf, smd_pkt_devp->rx_buf, bytes_read);
-	mutex_unlock(&smd_pkt_devp->rx_lock);
-	if (r) {
-		pr_err("copy_to_user failed %d\n", r);
-		return -EFAULT;
-	}
-
-	DBG("read complete %d bytes\n", bytes_read);
-	check_and_wakeup_reader(smd_pkt_devp);
-
-	return bytes_read;
-}
-
-static int smd_pkt_write(struct file *file, const char __user *buf,
-			 size_t count, loff_t *ppos)
-{
-	int r;
-	struct smd_pkt_dev *smd_pkt_devp;
-
-	if (count > MAX_BUF_SIZE)
-		return -EINVAL;
-
-	DBG("writing %d bytes\n", count);
-
-	smd_pkt_devp = file->private_data;
-	if (!smd_pkt_devp || !smd_pkt_devp->ch)
-		return -EINVAL;
-
-	mutex_lock(&smd_pkt_devp->tx_lock);
-	if (smd_write_avail(smd_pkt_devp->ch) < count) {
-		mutex_unlock(&smd_pkt_devp->tx_lock);
-		DBG("Not enough space to write\n");
-		return -ENOMEM;
-	}
-
-	D_DUMP_BUFFER("write: ", count, buf);
-	r = copy_from_user(smd_pkt_devp->tx_buf, buf, count);
-	if (r) {
-		mutex_unlock(&smd_pkt_devp->tx_lock);
-		pr_err("copy_from_user failed %d\n", r);
-		return -EFAULT;
-	}
-
-	r = smd_write(smd_pkt_devp->ch, smd_pkt_devp->tx_buf, count);
-	if (r != count) {
-		mutex_unlock(&smd_pkt_devp->tx_lock);
-		pr_err("smd_write failed to write %d bytes: %d.\n", count, r);
-		return -EIO;
-	}
-	mutex_unlock(&smd_pkt_devp->tx_lock);
-
-	DBG("wrote %d bytes\n", count);
-	return count;
-}
-
-static unsigned int smd_pkt_poll(struct file *file, poll_table *wait)
-{
-	struct smd_pkt_dev *smd_pkt_devp;
-	unsigned int mask = 0;
-
-	smd_pkt_devp = file->private_data;
-	if (!smd_pkt_devp)
-		return POLLERR;
-
-	DBG("poll waiting\n");
-	poll_wait(file, &smd_pkt_devp->ch_read_wait_queue, wait);
-	if (smd_read_avail(smd_pkt_devp->ch))
-		mask |= POLLIN | POLLRDNORM;
-
-	DBG("poll return\n");
-	return mask;
-}
-
-static void smd_pkt_ch_notify(void *priv, unsigned event)
-{
-	struct smd_pkt_dev *smd_pkt_devp = priv;
-
-	if (smd_pkt_devp->ch == 0)
-		return;
-
-	switch (event) {
-	case SMD_EVENT_DATA:
-		DBG("data\n");
-		check_and_wakeup_reader(smd_pkt_devp);
-		break;
-
-	case SMD_EVENT_OPEN:
-		DBG("remote open\n");
-		smd_pkt_devp->remote_open = 1;
-		wake_up_interruptible(&smd_pkt_devp->ch_opened_wait_queue);
-		break;
-
-	case SMD_EVENT_CLOSE:
-		smd_pkt_devp->remote_open = 0;
-		pr_info("remote closed\n");
-		break;
-
-	default:
-		pr_err("unknown event %d\n", event);
-		break;
-	}
-}
-
-static char *smd_pkt_dev_name[] = {
-	"smdcntl0",
-	"smdcntl1",
-	"smdcntl2",
-	"smdcntl3",
-	"smdcntl4",
-	"smdcntl5",
-	"smdcntl6",
-	"smdcntl7",
-	"smd22",
-};
-
-static char *smd_ch_name[] = {
-	"DATA5_CNTL",
-	"DATA6_CNTL",
-	"DATA7_CNTL",
-	"DATA8_CNTL",
-	"DATA9_CNTL",
-	"DATA12_CNTL",
-	"DATA13_CNTL",
-	"DATA14_CNTL",
-	"DATA22",
-};
-
-static int smd_pkt_open(struct inode *inode, struct file *file)
-{
-	int r = 0;
-	struct smd_pkt_dev *smd_pkt_devp;
-
-	smd_pkt_devp = container_of(inode->i_cdev, struct smd_pkt_dev, cdev);
-	if (!smd_pkt_devp)
-		return -EINVAL;
-
-	file->private_data = smd_pkt_devp;
-
-	mutex_lock(&smd_pkt_devp->ch_lock);
-	if (smd_pkt_devp->open_count == 0) {
-		r = smd_open(smd_ch_name[smd_pkt_devp->i],
-			     &smd_pkt_devp->ch, smd_pkt_devp,
-			     smd_pkt_ch_notify);
-		if (r < 0) {
-			pr_err("smd_open failed for %s, %d\n",
-			       smd_ch_name[smd_pkt_devp->i], r);
-			goto out;
-		}
-
-		r = wait_event_interruptible_timeout(
-				smd_pkt_devp->ch_opened_wait_queue,
-				smd_pkt_devp->remote_open,
-				msecs_to_jiffies(2 * HZ));
-		if (r == 0)
-			r = -ETIMEDOUT;
-
-		if (r < 0) {
-			pr_err("wait returned %d\n", r);
-			smd_close(smd_pkt_devp->ch);
-			smd_pkt_devp->ch = 0;
-		} else {
-			smd_pkt_devp->open_count++;
-			r = 0;
-		}
-	}
-out:
-	mutex_unlock(&smd_pkt_devp->ch_lock);
-	return r;
-}
-
-static int smd_pkt_release(struct inode *inode, struct file *file)
-{
-	int r = 0;
-	struct smd_pkt_dev *smd_pkt_devp = file->private_data;
-
-	if (!smd_pkt_devp)
-		return -EINVAL;
-
-	mutex_lock(&smd_pkt_devp->ch_lock);
-	if (--smd_pkt_devp->open_count == 0) {
-		r = smd_close(smd_pkt_devp->ch);
-		smd_pkt_devp->ch = 0;
-	}
-	mutex_unlock(&smd_pkt_devp->ch_lock);
-
-	return r;
-}
-
-static const struct file_operations smd_pkt_fops = {
-	.owner = THIS_MODULE,
-	.open = smd_pkt_open,
-	.release = smd_pkt_release,
-	.read = smd_pkt_read,
-	.write = smd_pkt_write,
-	.poll = smd_pkt_poll,
-};
-
-static int __init smd_pkt_init(void)
-{
-	int i;
-	int r;
-
-	r = alloc_chrdev_region(&smd_pkt_number, 0,
-				NUM_SMD_PKT_PORTS, DEVICE_NAME);
-	if (r) {
-		pr_err("alloc_chrdev_region() failed %d\n", r);
-		return r;
-	}
-
-	smd_pkt_classp = class_create(THIS_MODULE, DEVICE_NAME);
-	if (IS_ERR(smd_pkt_classp)) {
-		r = PTR_ERR(smd_pkt_classp);
-		pr_err("class_create() failed %d\n", r);
-		goto unreg_chardev;
-	}
-
-	for (i = 0; i < NUM_SMD_PKT_PORTS; ++i) {
-		smd_pkt_devp[i] = kzalloc(sizeof(struct smd_pkt_dev),
-					  GFP_KERNEL);
-		if (!smd_pkt_devp[i]) {
-			pr_err("kmalloc() failed\n");
-			goto clean_cdevs;
-		}
-
-		smd_pkt_devp[i]->i = i;
-
-		init_waitqueue_head(&smd_pkt_devp[i]->ch_read_wait_queue);
-		smd_pkt_devp[i]->remote_open = 0;
-		init_waitqueue_head(&smd_pkt_devp[i]->ch_opened_wait_queue);
-
-		mutex_init(&smd_pkt_devp[i]->ch_lock);
-		mutex_init(&smd_pkt_devp[i]->rx_lock);
-		mutex_init(&smd_pkt_devp[i]->tx_lock);
-
-		cdev_init(&smd_pkt_devp[i]->cdev, &smd_pkt_fops);
-		smd_pkt_devp[i]->cdev.owner = THIS_MODULE;
-
-		r = cdev_add(&smd_pkt_devp[i]->cdev,
-			     (smd_pkt_number + i), 1);
-		if (r) {
-			pr_err("cdev_add() failed %d\n", r);
-			kfree(smd_pkt_devp[i]);
-			goto clean_cdevs;
-		}
-
-		smd_pkt_devp[i]->devicep =
-			device_create(smd_pkt_classp, NULL,
-				      (smd_pkt_number + i), NULL,
-				      smd_pkt_dev_name[i]);
-		if (IS_ERR(smd_pkt_devp[i]->devicep)) {
-			r = PTR_ERR(smd_pkt_devp[i]->devicep);
-			pr_err("device_create() failed %d\n", r);
-			cdev_del(&smd_pkt_devp[i]->cdev);
-			kfree(smd_pkt_devp[i]);
-			goto clean_cdevs;
-		}
-
-	}
-
-	pr_info("SMD Packet Port Driver Initialized.\n");
-	return 0;
-
-clean_cdevs:
-	if (i > 0) {
-		while (--i >= 0) {
-			mutex_destroy(&smd_pkt_devp[i]->ch_lock);
-			mutex_destroy(&smd_pkt_devp[i]->rx_lock);
-			mutex_destroy(&smd_pkt_devp[i]->tx_lock);
-			cdev_del(&smd_pkt_devp[i]->cdev);
-			kfree(smd_pkt_devp[i]);
-			device_destroy(smd_pkt_classp,
-				       MKDEV(MAJOR(smd_pkt_number), i));
-		}
-	}
-
-	class_destroy(smd_pkt_classp);
-unreg_chardev:
-	unregister_chrdev_region(MAJOR(smd_pkt_number), NUM_SMD_PKT_PORTS);
-	return r;
-}
-module_init(smd_pkt_init);
-
-static void __exit smd_pkt_cleanup(void)
-{
-	int i;
-
-	for (i = 0; i < NUM_SMD_PKT_PORTS; ++i) {
-		mutex_destroy(&smd_pkt_devp[i]->ch_lock);
-		mutex_destroy(&smd_pkt_devp[i]->rx_lock);
-		mutex_destroy(&smd_pkt_devp[i]->tx_lock);
-		cdev_del(&smd_pkt_devp[i]->cdev);
-		kfree(smd_pkt_devp[i]);
-		device_destroy(smd_pkt_classp,
-			       MKDEV(MAJOR(smd_pkt_number), i));
-	}
-
-	class_destroy(smd_pkt_classp);
-	unregister_chrdev_region(MAJOR(smd_pkt_number), NUM_SMD_PKT_PORTS);
-}
-module_exit(smd_pkt_cleanup);
-
-MODULE_DESCRIPTION("MSM Shared Memory Packet Port");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/char/pcmcia/cm4040_cs.c b/drivers/char/pcmcia/cm4040_cs.c
index 8dd48a2be911..fc061f7c2bd1 100644
--- a/drivers/char/pcmcia/cm4040_cs.c
+++ b/drivers/char/pcmcia/cm4040_cs.c
@@ -532,9 +532,8 @@ static int reader_config(struct pcmcia_device *link, int devno)
 
 	fail_rc = pcmcia_enable_device(link);
 	if (fail_rc != 0) {
-		dev_printk(KERN_INFO, &link->dev,
-			   "pcmcia_enable_device failed 0x%x\n",
-			   fail_rc);
+		dev_info(&link->dev, "pcmcia_enable_device failed 0x%x\n",
+			 fail_rc);
 		goto cs_release;
 	}
 
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 0ea9986059af..7680d5213ff8 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -437,7 +437,7 @@ static int mgslpc_device_count = 0;
  * .text section address and breakpoint on module load.
  * This is useful for use with gdb and add-symbol-file command.
  */
-static bool break_on_load=0;
+static bool break_on_load;
 
 /*
  * Driver major number, defaults to zero to get auto
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 9cd6968e2f92..d0da5d852d41 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -409,6 +409,9 @@ static DECLARE_WAIT_QUEUE_HEAD(random_write_wait);
 static DECLARE_WAIT_QUEUE_HEAD(urandom_init_wait);
 static struct fasync_struct *fasync;
 
+static DEFINE_SPINLOCK(random_ready_list_lock);
+static LIST_HEAD(random_ready_list);
+
 /**********************************************************************
  *
  * OS independent entropy store.   Here are the functions which handle
@@ -589,6 +592,22 @@ static void fast_mix(struct fast_pool *f)
 	f->count++;
 }
 
+static void process_random_ready_list(void)
+{
+	unsigned long flags;
+	struct random_ready_callback *rdy, *tmp;
+
+	spin_lock_irqsave(&random_ready_list_lock, flags);
+	list_for_each_entry_safe(rdy, tmp, &random_ready_list, list) {
+		struct module *owner = rdy->owner;
+
+		list_del_init(&rdy->list);
+		rdy->func(rdy);
+		module_put(owner);
+	}
+	spin_unlock_irqrestore(&random_ready_list_lock, flags);
+}
+
 /*
  * Credit (or debit) the entropy store with n bits of entropy.
  * Use credit_entropy_bits_safe() if the value comes from userspace
@@ -660,7 +679,8 @@ retry:
 		r->entropy_total = 0;
 		if (r == &nonblocking_pool) {
 			prandom_reseed_late();
-			wake_up_interruptible(&urandom_init_wait);
+			process_random_ready_list();
+			wake_up_all(&urandom_init_wait);
 			pr_notice("random: %s pool is initialized\n", r->name);
 		}
 	}
@@ -1245,6 +1265,64 @@ void get_random_bytes(void *buf, int nbytes)
 EXPORT_SYMBOL(get_random_bytes);
 
 /*
+ * Add a callback function that will be invoked when the nonblocking
+ * pool is initialised.
+ *
+ * returns: 0 if callback is successfully added
+ *	    -EALREADY if pool is already initialised (callback not called)
+ *	    -ENOENT if module for callback is not alive
+ */
+int add_random_ready_callback(struct random_ready_callback *rdy)
+{
+	struct module *owner;
+	unsigned long flags;
+	int err = -EALREADY;
+
+	if (likely(nonblocking_pool.initialized))
+		return err;
+
+	owner = rdy->owner;
+	if (!try_module_get(owner))
+		return -ENOENT;
+
+	spin_lock_irqsave(&random_ready_list_lock, flags);
+	if (nonblocking_pool.initialized)
+		goto out;
+
+	owner = NULL;
+
+	list_add(&rdy->list, &random_ready_list);
+	err = 0;
+
+out:
+	spin_unlock_irqrestore(&random_ready_list_lock, flags);
+
+	module_put(owner);
+
+	return err;
+}
+EXPORT_SYMBOL(add_random_ready_callback);
+
+/*
+ * Delete a previously registered readiness callback function.
+ */
+void del_random_ready_callback(struct random_ready_callback *rdy)
+{
+	unsigned long flags;
+	struct module *owner = NULL;
+
+	spin_lock_irqsave(&random_ready_list_lock, flags);
+	if (!list_empty(&rdy->list)) {
+		list_del_init(&rdy->list);
+		owner = rdy->owner;
+	}
+	spin_unlock_irqrestore(&random_ready_list_lock, flags);
+
+	module_put(owner);
+}
+EXPORT_SYMBOL(del_random_ready_callback);
+
+/*
  * This function will use the architecture-specific hardware random
  * number generator if it is available.  The arch-specific hw RNG will
  * almost certainly be faster than what we can do in software, but it
diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index 5fc291c6157e..60316fbaf295 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -12,6 +12,7 @@
 #include <linux/fs.h>
 #include <linux/major.h>
 #include <linux/blkdev.h>
+#include <linux/backing-dev.h>
 #include <linux/module.h>
 #include <linux/raw.h>
 #include <linux/capability.h>
diff --git a/drivers/char/snsc.c b/drivers/char/snsc.c
index 8bab59292a0d..8a80ead8d316 100644
--- a/drivers/char/snsc.c
+++ b/drivers/char/snsc.c
@@ -198,7 +198,7 @@ scdrv_read(struct file *file, char __user *buf, size_t count, loff_t *f_pos)
 		add_wait_queue(&sd->sd_rq, &wait);
 		spin_unlock_irqrestore(&sd->sd_rlock, flags);
 
-		schedule_timeout(SCDRV_TIMEOUT);
+		schedule_timeout(msecs_to_jiffies(SCDRV_TIMEOUT));
 
 		remove_wait_queue(&sd->sd_rq, &wait);
 		if (signal_pending(current)) {
@@ -294,7 +294,7 @@ scdrv_write(struct file *file, const char __user *buf,
 		add_wait_queue(&sd->sd_wq, &wait);
 		spin_unlock_irqrestore(&sd->sd_wlock, flags);
 
-		schedule_timeout(SCDRV_TIMEOUT);
+		schedule_timeout(msecs_to_jiffies(SCDRV_TIMEOUT));
 
 		remove_wait_queue(&sd->sd_wq, &wait);
 		if (signal_pending(current)) {
diff --git a/drivers/char/tpm/tpm_crb.c b/drivers/char/tpm/tpm_crb.c
index b26ceee3585e..44f9d20c19ac 100644
--- a/drivers/char/tpm/tpm_crb.c
+++ b/drivers/char/tpm/tpm_crb.c
@@ -267,7 +267,7 @@ static int crb_acpi_add(struct acpi_device *device)
 
 	memcpy_fromio(&pa, &priv->cca->cmd_pa, 8);
 	pa = le64_to_cpu(pa);
-	priv->cmd = devm_ioremap_nocache(dev, le64_to_cpu(pa),
+	priv->cmd = devm_ioremap_nocache(dev, pa,
 					 ioread32(&priv->cca->cmd_size));
 	if (!priv->cmd) {
 		dev_err(dev, "ioremap of the command buffer failed\n");
@@ -276,7 +276,7 @@ static int crb_acpi_add(struct acpi_device *device)
 
 	memcpy_fromio(&pa, &priv->cca->rsp_pa, 8);
 	pa = le64_to_cpu(pa);
-	priv->rsp = devm_ioremap_nocache(dev, le64_to_cpu(pa),
+	priv->rsp = devm_ioremap_nocache(dev, pa,
 					 ioread32(&priv->cca->rsp_size));
 	if (!priv->rsp) {
 		dev_err(dev, "ioremap of the response buffer failed\n");
diff --git a/drivers/char/tpm/tpm_ibmvtpm.c b/drivers/char/tpm/tpm_ibmvtpm.c
index 42ffa5e7a1e0..27ebf9511cb4 100644
--- a/drivers/char/tpm/tpm_ibmvtpm.c
+++ b/drivers/char/tpm/tpm_ibmvtpm.c
@@ -578,6 +578,9 @@ static int tpm_ibmvtpm_probe(struct vio_dev *vio_dev,
 		goto cleanup;
 	}
 
+	ibmvtpm->dev = dev;
+	ibmvtpm->vdev = vio_dev;
+
 	crq_q = &ibmvtpm->crq_queue;
 	crq_q->crq_addr = (struct ibmvtpm_crq *)get_zeroed_page(GFP_KERNEL);
 	if (!crq_q->crq_addr) {
@@ -622,8 +625,6 @@ static int tpm_ibmvtpm_probe(struct vio_dev *vio_dev,
 
 	crq_q->index = 0;
 
-	ibmvtpm->dev = dev;
-	ibmvtpm->vdev = vio_dev;
 	TPM_VPRIV(chip) = (void *)ibmvtpm;
 
 	spin_lock_init(&ibmvtpm->rtce_lock);
diff --git a/drivers/char/tpm/tpm_of.c b/drivers/char/tpm/tpm_of.c
index c002d1bd9caf..eebe6256918f 100644
--- a/drivers/char/tpm/tpm_of.c
+++ b/drivers/char/tpm/tpm_of.c
@@ -49,7 +49,7 @@ int read_log(struct tpm_bios_log *log)
 
 	basep = of_get_property(np, "linux,sml-base", NULL);
 	if (basep == NULL) {
-		pr_err(KERN_ERR "%s: ERROR - SML not found\n", __func__);
+		pr_err("%s: ERROR - SML not found\n", __func__);
 		goto cleanup_eio;
 	}
 
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 50754d203310..d2406fe25533 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -1492,8 +1492,8 @@ static int add_port(struct ports_device *portdev, u32 id)
 		 * Finally, create the debugfs file that we can use to
 		 * inspect a port's state at any time
 		 */
-		sprintf(debugfs_name, "vport%up%u",
-			port->portdev->vdev->index, id);
+		snprintf(debugfs_name, sizeof(debugfs_name), "vport%up%u",
+			 port->portdev->vdev->index, id);
 		port->debugfs_file = debugfs_create_file(debugfs_name, 0444,
 							 pdrvdata.debugfs_dir,
 							 port,
diff --git a/drivers/char/xilinx_hwicap/buffer_icap.c b/drivers/char/xilinx_hwicap/buffer_icap.c
index 05d897764f02..53c3882e4981 100644
--- a/drivers/char/xilinx_hwicap/buffer_icap.c
+++ b/drivers/char/xilinx_hwicap/buffer_icap.c
@@ -270,7 +270,7 @@ int buffer_icap_set_configuration(struct hwicap_drvdata *drvdata, u32 *data,
 	int status;
 	s32 buffer_count = 0;
 	s32 num_writes = 0;
-	bool dirty = 0;
+	bool dirty = false;
 	u32 i;
 	void __iomem *base_address = drvdata->base_address;
 
@@ -279,7 +279,7 @@ int buffer_icap_set_configuration(struct hwicap_drvdata *drvdata, u32 *data,
 
 		/* Copy data to bram */
 		buffer_icap_set_bram(base_address, buffer_count, data[i]);
-		dirty = 1;
+		dirty = true;
 
 		if (buffer_count < XHI_MAX_BUFFER_INTS - 1) {
 			buffer_count++;
@@ -299,7 +299,7 @@ int buffer_icap_set_configuration(struct hwicap_drvdata *drvdata, u32 *data,
 
 		buffer_count = 0;
 		num_writes++;
-		dirty = 0;
+		dirty = false;
 	}
 
 	/* Write unwritten data to ICAP */
diff --git a/drivers/char/xillybus/Kconfig b/drivers/char/xillybus/Kconfig
index b53bdf12da0d..b302684d86c1 100644
--- a/drivers/char/xillybus/Kconfig
+++ b/drivers/char/xillybus/Kconfig
@@ -24,7 +24,7 @@ config XILLYBUS_PCIE
 
 config XILLYBUS_OF
 	tristate "Xillybus over Device Tree"
-	depends on OF_ADDRESS && OF_IRQ
+	depends on OF_ADDRESS && OF_IRQ && HAS_DMA
 	help
 	  Set to M if you want Xillybus to find its resources from the
 	  Open Firmware Flattened Device Tree. If the target is an embedded